B12_Fault_Current_Analysis.pdf

UNITED STATES

FISH AND WILDLIFE SERVICE

ABERNATHY

FISH TECHNOLOGY CENTER

FAULT CURRENT ANALYSIS, COORDINATION STUDY,

ARC FLASH ASSESSMENT, AND TEST REPORTS

BCE Project No. 219-212

January 28, 2021

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ABERNATHY FISH TECHNOLOGY CENTER

Fault Current Analysis, Coordination Study, Arc Flash Assessment, and Electrical System Test Results

INDEX

I Fault Current Analysis Report

II Coordination Study Report

III Arc Flash Assessment

IV Testing Summary

APPENDICES

Appendix 1A : One-Line Diagram with Fault Current

Appendix 2A : Components One-Line

Appendix 2B : Time-Current Curves

Appendix 2C : Input Data Summary Sheets

Appendix 3A : Arc Flash Assessment Energy Summary Table

Appendix 3B : Arc Flash Labels

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EXECUTIVE SUMMARY

The KPFF and BCE Engineers team were selected to perform a study to assess the existing electrical system at the Abernathy Fish Technology Center and provide guidance for potential corrections and improvements. This study includes both a theoretical assessment and the results of physical testing of the electrical system.

Based upon the assessment of the existing electrical system BCE created a site plan with recommended corrections and improvements. The site plan itemizes the assessment and gives additional guidance in addressing the work.

The results of the analysis and testing are summarized below:

Fault Analysis:

A fault analysis was performed and all panels were found to be rated for the available fault current present. A detailed explanation and results of the analysis are included in Section I.

Coordination Study:

The electrical system was assessed for coordination of the overcurrent protective devices.

Overall, the system has a high degree of coordination but potential coordination deficiencies were identified at the following locations:

- Genetics Building

- Challenge Building

- Extruder Building

- Office GE Lab 480V Service

- Middle House

Options for improvement are presented along with a more detailed explanation of the coordination study in Section II.

Arc Flash Assessment:

Based on the results of the fault analysis and coordination study, an arc flash assessment was performed to determine the amount of available energy at each fused disconnect and panelboard in the system. The following panels were identified to have a level of incident energy available greater than 8 cal/cm2. This elevates the flash hazard risk to Category 3, requiring additional PPE as identified in Table 3 of Section III. There were no panels identified as flash hazard risk Category 4 or as “dangerous” which indicates a level of incident energy beyond available PPE levels. A detailed explanation of the arc flash results is included in Section III.

- Generator Building Switchboard PB1 – 12.5 cal/cm2

- Hatchery Service Panel P4 – 8.29 cal/cm2

- Cooler Freezer service panel – 8.47 cal/cm2

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Electrical Testing and Inspection:

Within the scope of this project, underground feeders were tested, building main grounding was tested, and transformers were tested. Additionally, each piece of electrical equipment was photographed with an IR camera to identify hot spots, if present. Following is a summary of locations where test results were not within acceptable limits:

Ground Resistance Test:

The National Electrical Code, Article 250.52 requires that a grounding electrode (ie ground rod) have a resistance to earth of 25 ohms or less. If the resistance to earth of the grounding electrode does not meet this requirement, the Code requires the installation of a second grounding electrode. The following locations were found to have a resistance to earth of greater than 25 ohms. Full results of the ground resistance tests and an explanation is included in Section IV.

- Hazmat Building

- Pump House

- Cooler Building

- Main House

- Middle House

- Residence House

Cable Insulation Resistance Test:

Measuring the insulation resistance is a way to determine the health of the 600Volt insulation on a typical conductor. If a conductor is exposed excessive heat, moisture, or physical damage, it is possible that the insulation may begin to fail. Insulation resistance for a good cable will typically measure in the Megaohms (>1,000,000 ohms). However, a cable is not necessarily in need of replacement until the resistance falls below 20kohms. The following feeders were found to have an insulation resistance of 20,000 ohms or less. Full results of the cable insulation resistance tests and an explanation is included in Section IV.

- Pump House feeder (Generator Bldg to Pump House)

- Cooler Freezer feeder (Generator Bldg to Cooler/Freezer Bldg)

- Shop P-5 Feeder (Generator Bldg to Shop Bldg)

- Selective Breeding Feeder (Hatchery Bldg to Selective Breeding Bldg)

Transformer Insulation Resistance Test Results:

Transformer Insulation Resistance Test results show that all dry-type transformers tested have insulation resistance within acceptable limits. A full summary of the transformer insulation resistance test results is presented in Tab #4.

Infra-Red Photography Results:

Infra-red photography results did not find electrical equipment hot-spots outside of the equipment temperature rating limits. Some sample photographs are included in Section IV of the report.

Miscellaneous Electrical Items:

The following potential code violations or suspect installation conditions were found during the electrical inspection process. These items are also included in Section IV of the report.:

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- The feeder between Hatchery Bldg Panel P4 (main service) and Panel P4-A did not appear to have a ground conductor.

- The feeder size between the Shop Building Panel P5 (main service) and the

Challenge Building main service panel appears to be undersized 100Amps with a

#4 Copper feeder (should be #2).

- Genetics Office Panel P2 – the ground is being used as the neutral for the local meter but the panel has no neutral (delta).

- Genetics Office Panel P4 – Missing ground bus in the panel. Neutral and ground are connected to the same bus. This panel would include a neutral to ground bond but should have separate busses for neutral and ground.

- Pump House feeder – Feeder to pump house was routed through a below grade handhole in the building. The conductors were spliced in this handhole using a method not approved for below grade installations (wire nuts). The handhole was full of water which resulted in a failed insulation resistance test.

- Some corrosion was found on one of the main incoming lugs in the generator building main circuit breaker ahead of the Automatic Transfer Switch. Since this location previously showed signs of corrosion and was repaired prior to the inspection for this project, additional corrosion present may indicate a sign of overload on one or two phases of the service which could cause heat which may result in moisture condensation at the terminal and corrosion.

- Phase colors for 600V systems should be as follows based on industry standards, although the main service does not use the proper color code and should be updated:

o 480V – Brown (A), Orange (B), Yellow (C) o 208V – Black (A), Red (B), Blue (C)

- Physiology Building Transformer 2C secondary lugs appear to be not code compliant. Recommend replacing lugs with larger, centric lugs to eliminate landing (2) sets of cable on a lug suitable for one connection of the cable sizes present.

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SECTION I : FAULT CURRENT ANALYSIS

A fault current analysis is performed in order to determine the potential fault current at the busses throughout a system. Several factors determine what a fault current will be at each bus. Some of these factors are: conductor size, conductor length, transformer impedance, and available utility fault current.

Each bus is sized based on the potential fault current available at that point. The lowest industry standard rating for a bus is 10,000 AIC (Ampere Interrupting Capacity) for 208 Volt and 240 Volt busses and

14,000 AIC for 480 Volt busses. If a potential fault current is higher than these minimum standards, then a bus with a higher AIC would have to be provided for a fully rated system. The calculated fault currents can be found in a table following this section.

In order to perform an accurate fault current analysis, ratings of existing electrical equipment and conductor sizes, types and lengths were acquired by BCE Engineers with additional information provided by Abernathy Fish Technology Center.

The software program SKM PowerTools for Windows Version 9.0 by SKM Systems Analysis, Inc. was used for the fault current analysis.

FAULT CURRENT SUMMARY

The scope for this study includes four different service points to the electrical system. Descriptions of each service and the available fault current utilized in the study are listed below:

Name Voltage Ampacity Available

Fault Current

X/R Ratio

Main Generator Building Service 480Y/277V 800 Amps 24,056 Amps 5.0

Housing #1 (Personnel) 120/240V 225 Amps 4,167 Amps 2.0

Housing #2 (Main Office/Middle

House)

120/240V 225 Amps 10,417 Amps 2.0

Well Building 480Y/277V 400 Amps 24,056 Amps 5.0

Based on the fault calculations performed in SKM PowerTools, all panels have calculated available fault currents less than the surveyed ratings. The following table indicates the switchboards, panels, and fused disconnect switches with their calculated fault currents, calculated X/R values, and rated interrupting current.

Panel Name Voltage

Calc 3P

(A)

Calc 3P

X/R

Calc LG

(A)

Calc LG

X/R

Rated

AIC (A)

2C-EXT 208V 1,846 2.75 1,865 2.75 10,000

AIR COMPRESSOR 208V 1,734 0.5 1,465 0.6 10,000

CHALLENGE BLDG 208V 1,761 0.6 1,485 0.6 10,000

COOLER-FREEZER 208V 4,528 1.3 4,243 1.1 10,000

DISC 480V 9,947 1.1 8,083 1.1 14,000

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(A)

Calc 3P

X/R

Calc LG

(A)

Calc LG

X/R

Rated

AIC (A)

DP3-1 240V 450 2.1 --- --- 10,000

ELECTRIC WIER 240V 929 2.2 --- --- 10,000

EXTRUDER (MDP) 480V 10,700 1.2 8,926 1.2 14,000

GEN BLDG P-1 208V 6,128 2.6 6,292 2.5 10,000

GENERATOR 480V 2,503 20 2,503 20 ---------

GENETICS (MDP) 480V 9,745 1.1 8,064 1.2 25,000

HATCHERY (P4) 208V 4,442 1.7 4,075 1.7 10,000

HAZMAT EXTERIOR 240V 1,627 1.9 --- --- 10,000

HAZMAT PNL 208V 1,493 0.5 1,250 0.6 10,000

MAIN OFFICE PN 240V 3,664 1.5 3,529 1.5 10,000

MAIN OFFICE PN 240V 8,037 1.3 7,504 1.2 10,000

MAIN OFFICE SU 240V 3,631 1.5 3,490 1.5 10,000

MAIN OFFICE SU 240V 7,860 1.2 7,311 1.2 10,000

MD 480V 22,054 3.9 21,242 3.9 24,000

MIDDLE OFFICE 240V 8,037 1.3 7,504 1.2 10,000

MIDDLE OFFICE 240V 5,623 0.7 5,011 0.7 10,000

NEMA 3R DISC 240V 937 2.2 --- --- 10,000

NP1 480V 10,534 1.2 8,775 1.2 14,000

NP2 208V 2,279 2.4 2,341 2.4 10,000

OFFICE GE LAB 480V 8,918 0.8 7,473 0.8 14,000

OFFICE P-3 208V 3,892 1.4 3,480 1.4 10,000

P3 SUB 208V 3,639 1.2 3,231 1.2 10,000

P4 208V 3,142 2.1 3,301 2.3 10,000

P4A 208V 2,516 1.3 2,478 1.3 10,000

P4-A 208V 1,648 0.4 1,401 0.4 10,000

P4-B 208V 2,166 0.5 1,865 0.5 10,000

P4-C 208V 2,166 0.5 1,865 0.5 10,000

P4-D 208V 4,278 1.5 3,900 1.5 10,000

PB1 208V 6,338 3.3 6,583 3.3 10,000

PDC1 480V 21,687 3.8 20,750 3.7 25,000

PHYSIOLOGY (PHY-MDP) 480V 6,965 0.6 5,802 0.7 14,000

PNL 2A 208V 3,683 2.1 3,836 2.3 10,000

PNL 2B 240V 1,154 2.1 1,172 2.2 10,000

PNL 2C 240V 1,679 2.1 --- --- 10,000

PNL A 208V 2,837 1.6 2,943 1.7 10,000

PNL B 208V 2,837 1.6 2,943 1.7 10,000

PUMP HOUSE 480V 5,246 0.3 4,431 0.3 10,000

REUSE (DP3) 480V 7,873 0.7 6,554 0.8 14,000

SB 208V 3,750 1.3 3,293 1.2 10,000

SHOP P-5 208V 2,191 0.7 1,860 0.7 10,000

SP1 208V 2,707 0.9 2,080 0.7 10,000

SP4 208V 1,461 0.4 1,237 0.4 10,000

SP4-1 208V 1,452 0.4 1,230 0.4 10,000

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(A)

Calc 3P

X/R

Calc LG

(A)

Calc LG

X/R

Rated

AIC (A)

WELL4 MDP 480V 22,953 4 22,505 3.9 65,000

WELL4-SDP 208V 1,490 2.3 1,498 2.3 10,000

Table 1: Calculated Fault Current Levels for Switchboards, Panels, and Fused Disconnects

A description of the data included in each column is described below:

Panel name = the name of the electrical equipment assessed

Voltage = The voltage present at the electrical equipment

Calc 3P (A) = The calculated available 3-phase fault current available at the equipment in Amps

Calc 3P X/R = The calculated X/R ratio present during a 3-phase fault (ratio of reactance to resistance)

Calc LG (A) = The calculated available line to ground fault current available at the equipment in Amps

Calc LG X/R = The calculated X/R ratio present during a line to ground fault (ratio of reactance to resistance)

Rated AIC (A) = The interrupting rating of the electrical equipment in Amps

CONCLUSIONS

As can be seen in the Table 1 values above, all equipment have interrupting ratings which exceed the calculated fault current available. Therefore, no modifications were found to be necessary to accommodate the calculated fault current.

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SECTION II : OVERCURRENT PROTECTION COORDINATION STUDY

A Protective Device Coordination Study is performed in order to minimize the number of circuits that are de-energized due to a fault somewhere in the electrical system. Time-current curves, showing the time or range of time a circuit breaker will trip at a given current, are used to determine where faults may bypass local breakers and trip breakers that are farther upstream. In theory, a fault at a distribution transformer could trip the main feeder breaker at the main switchgear causing loss of power to the entire campus. By adjusting the trip settings to provide the best coordination possible, unnecessary power outages can be avoided.

The software program SKM PowerTools for Windows Version 9.0 by SKM Systems Analysis, Inc.

was used for the coordination study.

COORDINATION STUDY SUMMARY

Coordination paths were chosen for each unique path out of the utility. Time-current curves were modeled and coordinated for each unique path between the main breaker of the Main Disconnect and

Utility Poles to the largest branch breaker at the end of the run. Table 2 identifies a total of 13 paths that were modeled for the breakers that are fed from the Main Disconnect and Utility Poles.

The table below indicates the degree of coordination for each path and the significance of any overcurrent devices that are not coordinated. The degrees of coordination are broken down into “Full”, “High”, “Some”, and “Not”. “Full” indicates a fully coordinated path. A “High” coordinated path includes breaker overlaps in the instantaneous range as well as curve overlaps that do not affect the overall system. Paths that include “Some” degree of coordination include an overlap that may cause an upstream breaker to trip, but does not cause more than a few panels to shut down. A path that is “Not” coordinated indicates that there are one or more overlaps that may cause a large-scale system shutdown that affects more than a few panels.

Path

Level of

Coordination Coordination Remarks

Figure 1: MD -> HWT Some Overlap Panel 2A feeder and Genetics main

Figure 2: MD -> P4-D High

Figure 3: MD -> SP4-1 High

Figure 4: MD -> CHALLENGE BLDG Some Overlap Shop main and feed to Challenge Bldg

Figure 5: MD -> SP1 High

Figure 6: MD -> ELECTRICAL WIER High

Figure 7: MD -> DISC-COND CYL High

Figure 8: MD -> NP1 Some Overlap Panel NP1 feeder and Extruder main

Figure 9: MD -> A High

Figure 10: MD -> P4A Some Overlap Panel P4A and Office GE Lab Main

Figure 11: UTILITY POLE 1 -> MAIN

OFFICE SUB PNL 1

High

Figure 12: UTILITY POLE 2 -> MIDDLE

OFFICE SUB

Some Overlap main panel to sub panel

Figure 13: Well 4 -> Well 4 SDP High

Table 2: Coordination Path Summary

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COORDINATION STUDY TIME CURRENT CURVE ANALYSIS

To analyze the electrical system for coordination, each selected coordination path is outlined below including potential options for increasing coordination. The graphic representation of the time current curves is included in Appendix 2B.

Time Current Curve: FIG 01_MD->HWT (Genetics Building)

This time current curve includes the following devices:

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Genetics feeder circuit breaker

- 480V, 200Amp Genetics main circuit breaker

- 480V, 90Amp Transformer 2A feeder circuit breaker

- 208V, 200A Panel 2A main circuit breaker

- 208V, 60A hot water tank feeder circuit breaker

- 208V, 40A hot water tank fuse

This TCC shows some coordination. An overlap is present between the Panel 2A feeder and main breaker and the 200A Genetics building feeder circuit breaker. It is possible that a fault in the feeder to transformer 2A could cause the main breaker in the Genetics Building main 480V panel to trip. The overlap occurs for a calculated fault current between 1,000Amps and 1,400Amps.

Time Current Curve: FIG 02_MD->SP4-1 (Hatchery/Selective Breeding Buildings)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Feed to Transformer TPB1

- 208V, 200Amp Hatchery feeder circuit breaker

- 208V, 200Amp Hatchery main circuit breaker

- 208V, 60Amp Panel SP4 feeder circuit breaker

- 208V, 60Amp Panel SP4 main circuit breaker

- 208V, 50Amp Panel SP4-1 feeder circuit breaker

This TCC generally shows a high degree of coordination.

Time Current Curve: FIG 03_MD->P4-D (Hatchery Building)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Feed to Transformer TPB1

- 208V, 200Amp Hatchery feeder circuit breaker

- 208V, 200Amp Hatchery main circuit breaker

- 208V, 70Amp Panel P4-D feeder circuit breaker

Time Current Curve: FIG 04_MD->CHALLENGE BLDG (Shop/Challenge Bldg)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Feed to Transformer TPB1

- 208V, 125Amp Shop Panel P-5 feeder circuit breaker

- 208V, 125Amp Shop Panel P-5 main circuit breaker

- 208V, 100Amp Challenge Bldg Panel feeder circuit breaker

- 208V, 100Amp Challenge Bldg Panel main circuit breaker

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This TCC shows some coordination. Overlaps are present between the 125A breakers serving the

Shop panel and the 100Amp circuit breaker feeding the Challenge building. Increasing the feed to the

Shop to 200Amps would improve coordination if the Shop or Challenge building are having issues with main breakers tripping. However, a load assessment would be necessary to verify capacity is available at the Generator building main board, MD, and 208V switchboard, PB1.

Time Current Curve: FIG 05_MD->SP1 (Office GE Lab 208V Service)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Feed to Transformer TPB1

- 208V, 200Amp Office P-3 feeder circuit breaker

- 208V, 200Amp Office P-3 main circuit breaker

- 208V, 100Amp Panel SP1 feeder circuit breaker

Time Current Curve: FIG 06_MD->ELECTRICAL WIER (Reuse Bldg/Electric Wier)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Reuse Building feeder circuit breaker

- 480V, 90Amp Electric Wier transformer feeder circuit breaker

- 208V, 100Amp Electric Wier main circuit breaker

Time Current Curve: FIG 07_MD->DISC-COND CYL (Extruder Building)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Extruder building feeder circuit breaker

- 480V, 225Amp Extruder building main circuit breaker

- 480V, 100Amp Disconnect feeder circuit breaker

- 480V, 50Amp fused disconnect feeding bus gutter

- 480V, 4Amp fused disconnect

Time Current Curve: FIG 08_MD->NP1 (Extruder Building)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Extruder building feeder circuit breaker

- 480V, 225Amp Extruder building main circuit breaker

- 480V, 200Amp Panel NP1 feeder circuit breaker

This TCC shows some coordination. An overlap exists between the Extruder building feeder overcurrent protection and the sub-feed to Panel NP1. A fault in Panel NP1 could cause the Extruder building service breaker to trip. Presently, these panels operate similar to a two-section panel.

Time Current Curve: FIG 09_MD->A (Physiology Building)

- 480V, 600Amp MD main circuit breaker

- 480V, 200Amp Physiology feeder circuit breaker

- 480V, 200Amp Physiology main circuit breaker

- 480V, 100Amp transformer TA feeder circuit breaker

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- 208V, 200Amp Panel A main fused disconnect

Time Current Curve: FIG 10_MD->P4A (Office GE Lab 480V Service)

- 480V, 600Amp MD main circuit breaker

- 480V, 100Amp Office GE Lab building feeder circuit breaker

- 480V, 100Amp Transformer TP4 feeder circuit breaker

- 208V, 200Amp Panel P4 main circuit breaker

- 208V, 100Amp Panel P4A feeder circuit breaker

- 208V, 60Amp Panel P4A main circuit breaker

This TCC shows some coordination. There are coordination overlaps between the GE Office Lab

480V main breaker, the feed to the P4 transformer, and the main breaker of Panel P4. In the current configuration, a fault in Panel P4 could cause the main 480V GE office panel breaker to trip. There is an additional overlap between the Panel P4A main breaker and the Panel P4 main breaker. A fault in

Panel P4A could cause the main breaker of Panel P4 to trip. One method to improve coordination would be to increase the size of the GE Office Lab 480V feed to 200Amps. However, this would not provide full coordination and a load study would be necessary to verify system capacity.

Time Current Curve: FIG 11_UTILITY POLE 1->MAIN OFFICE SUB PNL 1 (Main Office)

- 240V, 200Amp Main Office main circuit breaker (At Pole)

- 240V, 100Amp Main Office sub-panel feeder circuit breaker

- 240V, 100Amp Main Office sub-panel main circuit breaker

Time Current Curve: FIG 12_UTILITY POLE 2->MIDDLE OFFICE SUB PNL (Middle Office)

- 240V, 200Amp Middle Office feeder circuit breaker (At Pole)

- 240V, 200Amp Middle Office panel main circuit breaker

- 240V, 100Amp Middle Office sub-panel feeder circuit breaker

This TCC generally shows some coordination. There is an overlap between the 100Amp sub-panel and the middle office main circuit breaker. A fault in the sub-panel could cause the main circuit breaker to trip.

Time Current Curve: FIG 13_WELL4->SDP (Well 4 Building)

- 480V, 450Amp Well 4 exterior main circuit breaker

- 480V, 400Amp Well 4 main circuit breaker

- 480V, 70Amp Pump #1 feeder circuit breaker

- 480V, 45Amp Transformer TSDP feeder circuit breaker

- 480V, 45Amp Transformer TSDP main circuit breaker

- 208V, 100Amp Panel SDP main circuit breaker

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CONCLUSIONS AND SUGGESTED BREAKER SETTINGS

Based on the information gathered in the field, 8 of the 13 paths modeled have a high level of coordination. This indicates that the system overall is well coordinated. Depending on the criticality of different buildings at the site, revisions may be implemented to improve coordination as indicated above.

Table 3 below shows the breakers that have adjustable trip settings. Based on the coordination analysis, the existing settings were found to be acceptable and did not require changing. A detailed overcurrent device report is located in Appendix 2C. A one-line diagram overview of all overcurrent protective devices is included in Appendix 2A.

Location Device ID Type Settings

MD MD_MCB GE SGHA

Phase: (NO CHANGE)

Thermal curve (MIN-MAX) MAX

GENERATOR MCB_PDC1-ATS

MERLIN

GERIN CK

800N

Phase: (NO CHANGE)

LTPU (0.8-1.0 x P) 1 (600A)

LTD (Fixed) Fixed

INST (1.5-10 x LTPU) 8 (4800A)

INST Delay (Fixed) Fixed

INST Override Fixed (12000A)

PDC1

FCB_GENETICS;

FCB_TPB1;

FCB_WELL3;

FCB_REUSE;

FCB_EXTRUDER;

GE SFHA

Phase: (NO CHANGE)

Thermal curve (MIN-MAX) MAX

EXTRUDER

(MDP)

MCB_EXTRUDER (MDP)

GE TFJ

(225A)

Phase: (NO CHANGE)

Thermal curve (Fixed)

INST (4.5-10 x Trip) HI (2250A)

EXTRUDER

(MDP)

MCB_NP1

GE TFJ

(200A)

Phase: (NO CHANGE)

Thermal curve (Fixed)

INST (4.5-10 x Trip) HI (2000A)

PDC1 FCB_PHYSIOLOGY GE SFHA

Phase: (NO CHANGE)

Thermal curve (MIN-MAX) MAX

Table 3: Breaker Settings

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SECTION III : ARC-FLASH HAZARD STUDY REPORT

An arc-flash assessment study is performed in order to determine the energy available in an arcing current during a fault condition and to determine the personal protective equipment required to service the equipment. While an arc-flash analysis is a good tool for estimating the available energy of an arc, the calculations are entirely theoretical and cannot give an exact real-world value for the energy in an actual arc. Environmental conditions such as pressure and humidity may significantly alter the available energy. It is assumed that the reader of this report is familiar with the arc-flash calculations set forth in IEEE 1584 as well as the requirements set forth in NFPA 70E “Standard for Electrical Safety in the Workplace”. The software program

SKM PowerTools was used to calculate the available arc energy and generate arc-flash warning labels for Abernathy Fish Technology Center in Longview, WA.

The purpose of this analysis is to provide a concise and easy to understand report that indicates the available arc energy at each panel, the arc-flash boundary, and the appropriate Personal

Protective Equipment (PPE) required to service the electrical equipment. However, it is the responsibility of the end user to determine best work practices suitable for the conditions present and the safety of the personnel maintaining the equipment. The information in this report and on the labels to be placed on the equipment are intended to provide additional information which the end user can incorporate into their safety procedures.

AVAILABLE ARC ENERGY

The bus at each panel was evaluated using SKM PowerTools. The program calculated the available fault current as well as the arc energy available at each of the panel busses. The arc energy available at each bus is primarily based on the available fault current and the trip time of the upstream overcurrent devices. A higher fault current can cause a higher energy arc. In some cases, a lower fault current can cause a higher energy arc due to the increased time it takes the next upstream breaker to trip. The software looks at two scenarios to find the maximum energy available at each bus. The first is with a 100% fault and the second is a resistance fault at 85% of the maximum available fault current. In most cases during an actual fault condition, some resistance will be present that will reduce the total fault current. 85% is an industry standard value that is used to emulate that scenario.

ARC-FLASH BOUNDARY

The arc-flash boundary is the closest distance to the arc gap that does not require special clothing. Any portion of a person within this boundary should be covered with some sort of protective gear to avoid severe burns or more harmful injuries. The approximate energy level that sets the boundary distance is 1.2 calories per square centimeter. Available energy in excess of 1.2 calories per square centimeter will require PPE of the appropriate classification for the energy available.

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ARCING ENERGY AND PERSONAL PROTECTIVE EQUIPMENT (PPE)

The available arc energy and voltage are intended to assist the end user to determine the appropriate level of PPE based on their safety procedures. The arc-flash boundary will determine the distance the indicated PPE level would be required from live, electrical, exposed parts. PPE may range from cotton clothing to fully fire-resistant suits with face shield. The following table shows an example of PPE for different levels of available energy:

Flash Hazard

Risk Category

Incident Energy Range

(calories / cm^2)

Minimum

PPE Rating Clothing Required

0 0 - 1.2 1.2 4.5 - 14.0 oz/yd^2 untreated cotton clothing

1 1.2+ - 4 4 Fire resistant shirt and pants

2 4+ - 8 8

Cotton underclothing plus fire resistant shirt and pants

3 8+ - 25 25

Cotton underclothing plus fire resistant shirt, pants, and overalls or equivalent

4 25+ - 40 40

Cotton underclothing plus fire resistant shirt and pants plus double layer switching coat and pants or equivalent

Table 3: PPE Clothing Requirements

The Arc Flash summary table and warning labels in Tab 3 indicate the distances where appropriate PPE is required for selective panels in the Facility.

ANALYSIS RESULTS

The Arc Flash Energy Tables in Appendix 3 show the incident energy at each panel in the system. There were panels with a risk category of 3 but most were risk category 1 or less. In most cases, this is a result of maximizing instantaneous region trip settings for optimal overcurrent coordination and of relatively low fault current at the panels. The low fault current at the panels results in a longer trip time from the upstream breaker during a fault. The increased trip time at a lower fault current may allow a higher-level energy arc to occur.

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Figure 3-1: Typical Arc Flash Label

Min. Arc Rating – Maximum Incident Heat Energy generated from a fault

Arc Flash Boundary – Distance from exposed live conductors that arcs can reach

PPE – Personal Protection Equipment required to work on exposed live parts

Shock Risk when cover is removed – Highest voltage of exposed live parts

Limited Approach (LAB) – Approach limit for unqualified persons to exposed live parts

Restricted Approach (RAB) – Approach limit for qualified persons to exposed live parts

Bus – Panel name where label shall be installed

Prot – Upstream overcurrent device protecting panel

ATTACHMENTS

In Appendix 3 of this report, you will find additional information supporting the Arc Flash assessment:

- A summary table of the Arc Flash calculation is included showing each bus, which fault current level resulted in the worst-case energy level, the fault current, the trip time of the upstream device, the arc flash boundary, and the worst-case energy available at the bus.

- Labels for each device containing overcurrent protection (ie panels with circuit breakers and fused disconnects) in the facility. Each label indicates the PPE level, energy level, and other pertinent information pertaining to the arc energy present.

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SECTION IV : ELECTRICAL SYSTEM ASSESSMENT AND TESTING REPORT

Executive Summary:

During the field investigation of the existing electrical system, all known panels were accessed to determine the make and model of equipment for use in the electrical system model and analysis portions of the study report. This section of the report includes some observations made during the initial field investigation and the results of the electrical system tests performed. This portion of the report is intended to provide information for the end user to determine if portions of the electrical system may require corrective action and to also give a snap shot of the current system status for use in assessing system deterioration over time.

During the initial field investigation and follow-up testing, several items were discovered which are recommended for repair. These items are outlined in the tables below.

As an additional means of assessing the existing electrical equipment, an IR camera was used to photograph different pieces of electrical equipment to give an idea of potential weak points in the system. Generally, electrical components are designed to operate at between 60℃ and 75℃ (140℉-

167℉). If electrical equipment is operating beyond that range, it is typically the sign of a bad connection or overload condition. Based on the IR photos taken, no hot spots were found which exceeded the temperature ratings of the electrical equipment.

ELECTRICAL SYSTEM TESTING RESULTS:

For the testing portion of this report, three different tests were performed on different portions of the electrical system to determine potential deficiencies. The first test performed was a ground resistance test. This test gives an idea of the quality of the connection of the electrical system ground to the earth.

The better this connection is, the more likely the electrical system will be able to respond if a bad connection energizes the earth. The second test performed was an insulation resistance or megger test.

This test is used to determine if electrical cables are in good condition or bad condition by measuring the resistance from each cable to neutral or ground. The final test performed within the scope of this assessment was a transformer test. This test is intended to give an idea of dry type transformer health similar to an insulation resistance test for cables. Each of the tests is described in more detail below with a summary table of the results.

GROUND RESISTANCE TESTING SUMMARY

Per the National Electrical Code (NFPA 70), each separately derived system is required to have a grounding connection to the nearest ground reference point (earth or structural steel). This connection is intended to provide a return path for fault current if an energized conductor comes into contact with an exposed metal surface of a piece of electrical equipment or the earth that would cause overcurrent protective devices (ie fuses or circuit breakers) to trip and de-energize the conductors safely. If the ground connection is in poor condition or non-existent, it could be possible that someone could be shocked by touching an energized surface. Therefore, this portion of the testing involved measuring the resistance to ground of each ground rod at each building of the facility. The testing device used was a clamp-on Ground Rod Resistance tester.

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The test results are presented in the following table. Per the National Electrical Code, the resistance to ground of the main grounding electrode is supposed to be 25 ohms or less. In the event the resistance is greater than 25 ohms to ground, an additional ground rod should be provided a minimum of 10 feet from the first ground rod with an appropriately sized ground cable between the two.

Date: 9/14/2020 – 9/16/2020

Temperature: 75°F Type of meter: AEMC Instruments

Model 3730

Soil Conditions: Moist Soil Classifications: Dirt

TAKE GROUND ROD READINGS AT EACH POLE OR STRUCTURE

Date Building Panel Name Ohms Number of Rods Comments

9/14/2020 Genetics BLDG 1A 0.7 1 Acceptable 9/14/2020 Physiology BLDG MDP 0.7 1 Acceptable 9/14/2020 Shop BLDG P5 0.7 1 Acceptable

9/14/2020 Hazmat BLDG HAZMAT PNL 260 1 Additional ground rod recommended 9/14/2020 Challenge BLDG 0.7 1 Acceptable 9/14/2020 Reuse BLDG DP3 0.7 1 Acceptable 9/14/2020 Electric Wier BLDG Electric Wier PNL 0.7 1 Acceptable 9/15/2020 Extruder BLDG MDP 9.5 1 Acceptable

9/15/2020 Office BLDG P2 0.8 1 Transformer TP4 operating at 100°C 9/15/2020 Office BLDG P3 0.7 1 Acceptable 9/15/2020 Pump House 23 1 Ground Fault

9/15/2020 Cooler BLDG COOLER PNL 99 1 Additional ground rod recommended

9/15/2020 Selective Breeding

BLDG

SP4 0.7 1

Acceptable

9/15/2020 Main House MAIN OFFICE PNL 800 1 Additional ground rod recommended

9/15/2020 Middle House MIDDLE HOUSE PNL 800 1 Additional ground rod recommended

9/15/2020 Residence BLDG RESIDENCE PNL 50 1 Additional ground rod recommended 9/15/2020 Main House EMER. MAIN OFFICE PNL 0.8 1 Acceptable 9/15/2020 Middle House EMER. MIDDLE HOUSE PNL 0.8 1 Acceptable

9/15/2020 Residence BLDG

EMER.

RESIDENCE PNL 0.8 1

Acceptable

9/16/2020 Hatchery BLDG P4 0.7 1 Acceptable

Table 4A: Ground Test Results

Red text indicates locations where the ground resistance was greater than the code required 25 ohms.

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INSULATION RESISTANCE TESTING SUMMARY

For this test, the resistance from each phase conductor to ground was measured and the resistance from each phase conductor to each other was measured. For insulation resistance tests, the higher the value the better. Following is a list of different resistance ranges and how they are interpreted in this report.

Insulation Resistance (Ohms) Cable Status Recommend Response

Less than 10k Poor Replace cable or repair

10k < 100k Moderate Replace or follow-up test to determine if cable has degraded.

100k < 500k Good Follow-up testing after 5 years.

> 500k Excellent Follow-up testing after 5 years.

Table 4B: Insulation Resistance Summary Table

In some cases, it was possible to visually determine a likely cause of a low resistance condition. In most cases, a low insulation resistance value is attributable to moisture ingress at a cable junction or a damaged portion of a feeder where the cables have been compressed or cut.

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Temperature: 75°F Type of meter: Klein Tools ET600

Panel Name

Circuit

Directory/

Feeder

Number

Volts/

Phase/

Cycles

Phase "A"

To

Ground

(MΩ)

Phase "B"

To

Ground

(MΩ)

Phase "C"

To

Ground

(MΩ)

Phase "A"

To

Phase "B"

(MΩ)

Phase "B"

To

Phase "C"

(MΩ)

Phase "A"

To

Phase "C"

(MΩ)

RESIDENCE FDR#2 240/1/60 > 4000 > 4000 --- > 4000 --- ---

MIDDLE HOUSE FDR#3 240/1/60 23.7 4.4 --- 32.24 --- ---

MAIN OFFICE

PNL

FDR#4 240/1/60 45.6 400 --- 452 --- ---

EMERGENCY

FEEDERS

FDR#5,6,7 240/1/60 127 133 --- 232 --- ---

GENETICS

(MDP)

FDR#8 480/3/60 > 4000 > 4000 > 4000 > 4000 > 4000 > 4000

PUMP HOUSE* FDR#9 480/3/60 0.05 0.15 0.14 0.02 0.04 0.02

REUSE (DP3) FDR#10 480/3/60 > 4000 > 4000 > 4000 1200 > 4000 > 4000

EXTRUDER

(MDP)

FDR#11 480/3/60 48 3.2 13.6 52 18 57

PHYSIOLOGY

(PHY-MDP)

FDR#12 480/3/60 > 4000 > 4000 > 4000 > 4000 > 4000 > 4000

OFFICE GE LAB

(P2)

FDR#13 480/3/60 500 500 500 1000 1000 1000

OFFICE P-3 FDR#14 208/3/60 > 4000 > 4000 > 4000 > 4000 > 4000 > 4000

COOLER-

FREEZER**

FDR#15 208/3/60 --- --- --- 0.002 0.136 ---

SHOP P-5* FDR#16 208/3/60 0.019 0.094 0.046 0.93 0.119 0.58

HATCHERY (P4) FDR#17 208/3/60 228 312 575 562 841 826

SELECTIVE

BREEDING

SP4**

FDR#18 208/3/60 0.008 0.008 0.136 0.002 0.136 0.138

CHALLENGE

BLDG

FDR#19 208/3/60 > 4000 > 4000 > 4000 > 4000 > 4000 > 4000

HAZMAT PNL FDR#20 208/3/60 > 4000 > 4000 > 4000 > 4000 > 4000 > 4000

ELECTRIC WIER FDR#21 208/3/60 > 4000 > 4000 > 4000 > 4000 > 4000 > 4000

Table 4C: Insulation Resistance Test Results

Red text indicates a cable with an insulation resistance which indicates the feeder is suspect.

* Indicates cable with moderate condition. Recommend to either replace cable or repeat test in 1 year to determine if cable condition is stable or getting worse.

** Indicates cable with poor condition. Recommend replacement of the cable with new or repair, if the low resistance condition is repairable.

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TRANSFORMER INSULATION RESISTANCE TESTING SUMMARY

For this test, the resistance from each phase conductor to ground was measured and the resistance from each phase conductor to each other was measured. For insulation resistance tests, the higher the value the better. Following is a list of different resistance ranges and how they are interpreted in this report.

Temperature: 75°F Type of meter: Klein Tools ET600

Transformer Name Voltage

Secondary to ground

(MΩ)

Primary to ground

(MΩ)

Primary to secondary

(MΩ)

Secondary

Phase to

Disconnect

(MΩ)

Residence House Backup Transformer

(House#1) 480V-240V 4.93 5.69 4.66 ---

Middle House Backup Transformer

(House#2) 480V-240V 6.73 6.55 6.73 ---

Main Office Backup Transformer (House#3) 480V-240V 5 5 5.7 70

Genetics Transformer T2A 480Δ-208Y >4000 >4000 >4000 >4000

Genetics Transformer T2B 480Δ-208Y >4000 >4000 >4000 >4000

Genetics Transformer T2C 480Δ-208Y >4000 >4000 >4000 >4000

Physiology Transformer TA 480Δ-208Y >4000 >4000 1394 >4000

Physiology Transformer TB 480Δ-208Y >4000 >4000 105 >4000

Office GE Lab Transformer TP4 480Δ-208Y >4000 >4000 >4000 >4000

Extruder Transformer TNP2 480Δ-208Y >4000 >4000 >4000 >4000

Reuse Transformer TWIER 480Δ-208Y >4000 >4000 >4000 >4000

Reuse Transformer TDP-3 480Δ-208Y >4000 >4000 >4000 >4000

Table 4D: Transformer Insulation Resistance Test Results

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INFRARED PHOTOGRAPHY SUMMARY

For this portion of the assessment an infrared camera was utilized to photograph different pieces of electrical equipment to identify hot spots. Each IR photo is accompanied by a normal photo of the equipment. Based on the photos taken, no hot spots were discovered which exceeded the temperature rating of the electrical equipment. Some example photos are included below:

IR Photograph and Description Normal Photograph

Panel DP1 in Generator Building

Physiology Building feeder breaker in Generator building

Generator Building Main Circuit Breaker

In the above photos, the scale on the right hand side of the IR image shows the temperature limits visible in the photo with blue/black being colder and red/white being warmer.

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FIELD OBSERVATIONS

During the field inspections and testing, some items were noted that could possibly be code violations which should be corrected or instances where electrical equipment was not installed per industry standard practice. The following potential code violations or suspect installation conditions were found during the electrical inspection process:

- The feeder between Hatchery Bldg Panel P4 (main service) and Panel P4-A did not appear to have a ground conductor.

- The feeder size between the Shop Building Panel P5 (main service) and the Challenge

Building main service panel appears to be undersized 100Amps with a #4 Copper feeder

(should be #2)

- Genetics Office Panel P2 – the ground is being used as the neutral for the local meter but the panel has no neutral (delta)

- Genetics Office Panel P4 – Missing ground bus in the panel. Neutral and ground are connected to the same bus. This panel would include a neutral to ground bond but should have separate busses for neutral and ground.

- Pump House feeder – Feeder to pump house was routed through ha below grade handhole in the building. The conductors were spliced in this handhole using a method not approved for below grade installations (wire nuts). The handhole was full of water which resulted in a failed insulation resistance test.

- Some corrosion was found on one of the main incoming lugs in the generator building main circuit breaker ahead of the Automatic Transfer Switch. Since this location previously showed signs of corrosion and was repaired prior to the inspection for this project, additional corrosion present may indicate a sign of overload on one or two phases of the service which could cause heat which may result in moisture condensation at the terminal and corrosion.

- Phase colors for 600V systems should be as follows based on industry standards, although the main service does not use the proper color code and should be updated:

o 480V – Brown (A), Orange (B), Yellow (C) o 208V – Black (A), Red (B), Blue (C)

- Physiology Building Transformer 2C secondary lugs appear to be not code compliant.

Recommend replacing lugs with larger, centric lugs to eliminate landing (2) sets of cable on a lug suitable for one connection of the cable sizes present.

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CONCLUSIONS AND SUGGESTIONS

Based on the ground resistance test results, the following ground points should be augmented with an additional ground rod and retested.

Building Ground

Resistance

Hazmat Building 260 Pump House 23 Cooler Building 99 Main House 800 Middle House 800 Residence Building 50

Based on the cable insulation resistance tests, the following cables require corrective action.

Panel Name

Circuit

Directory/

Feeder

Number

Volts/

Phase/

Cycles

Phase "A"

To

Ground

(megaohm)

Phase "B"

To

Ground

(megaohm)

Phase "C"

To

Ground

(megaohm)

Phase "A"

To

Phase "B"

(megaohm)

Phase "B"

To

Phase "C"

(megaohm)

Phase "A"

To

Phase "C"

(megaohm)

PUMP HOUSE* FDR#9 480/3/60 0.05 0.15 0.14 0.02 0.04 0.02

COOLER-

FREEZER**

FDR#15 208/3/60 --- --- --- 0.002 0.136 ---

SHOP P-5* FDR#16 208/3/60 0.019 0.094 0.046 0.93 0.119 0.58

SELECTIVE

BREEDING

SP4**

FDR#18 208/3/60 0.008 0.008 0.136 0.002 0.136 0.138

* Indicates cable with moderate condition. Recommend to either replace cable or repeat test in 1 year to determine if cable condition is stable or getting worse.

** Indicates cable with poor condition. Recommend replacement of the cable with new or repair, if the low resistance condition is repairable.

Based on the transformer insulation resistance tests, all transformers had an insulation resistance in the acceptable range. However, we recommend that insulation resistance tests be taken every 3-5 years and compared to the results presented here to determine if the insulation resistance is degrading. The results over time are useful in predicting the life expectancy of a transformer and planning for replacement.

Based on the IR camera and the photographs taken, no hot spots were noted at the time of the survey which indicated a condition beyond the temperature ratings of the equipment.

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Appendix 1A

One-Line Diagram

Fault Analysis

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WELL 4

SELECTIVE BREEDING BUILDING

HOUSE 3HOUSE 2

GEN ENCLOSURE

GENETICS BUILDING

OFFICE BUILDING

SHOP BUILDING

HATCHERY BUILDING

REUSE BUILDING EXTRUDER BUILDING PHYSIOLOGY BUILDING

HOUSE 1

OFFICE BUILDING

HAZMAT

HAZMAT BUILDINGCHALLENGE BUILDING

ELECTRIC WIER

PUMP HOUSE

COOLER/FREEZER

UTILITY POLE

Isc 3P 24056 A

Isc SLG 24056 A

FDR_MD

2 SET(S) OF #350kcmil Copper

Length 45.0 ft

FDR_PDC1-ATS

2 SET(S) OF #350kcmil Copper

Length 3.0 ft

FDR_PDC1-ATS2

2 SET(S) OF #350kcmil Copper

Length 16.0 ft

FDR_PDC1

2 SET(S) OF #350kcmil Copper

Length 6.0 ft

FDR_HOUSE 1

1 SET(S) OF #1/0AWG Copper

Length 85.0 ft

JBOX H1

Isc 3P= 2401 A

Isc SLG= 2356 A

X/R Pos= 7.00

PDC1

Isc 3P= 21687 A Isc SLG= 20750 A

X/R Pos= 3.80

MD_MCB FCB_HOUSES

FCB_OFFICE GE LAB

FDR_OFFICE GE LAB

1 SET(S) OF #1/0AWG Copper

Length 165.0 ft

OFFICE GE LAB (P2)

Isc 3P= 8918 A Isc SLG= 7473 A

X/R Pos= 0.80

FCB_PHYSIOLOGY

FDR_PHYSIOLOGY

1 SET(S) OF #4/0AWG Aluminum

Length 289.0 ft

PHYSIOLOGY (PHY-MDP)

Isc 3P= 6965 A

Isc SLG= 5802 A

X/R Pos= 0.63

FCB_EXTRUDER

FDR_EXTRUDER

1 SET(S) OF #3/0AWG Copper

Length 177.0 ft

EXTRUDER (MDP)

Isc 3P= 10700 A

Isc SLG= 8926 A

X/R Pos= 1.17

MCB_WELL4-MDP

FDR_WELL4-MDP

2 SET(S) OF #4/0AWG Copper

Length 3.0 ft

WELL4 MDP

Isc 3P= 22953 A

Isc SLG= 22505 A

X/R Pos= 4.01

FCB_PUMP HOUSE

FDR_PUMP HOUSE

1 SET(S) OF #10AWG Copper

Length 40.0 ft

PUMP HOUSE

Isc 3P= 5246 A

Isc SLG= 4431 A

X/R Pos= 0.31

FCB_REUSE

FDR_REUSE

1 SET(S) OF #250kcmil Aluminum

Length 280.0 ft

REUSE (DP3)

Isc 3P= 7873 A

Isc SLG= 6554 A

X/R Pos= 0.74

FCB_TPB1

FDR_TPB1

1 SET(S) OF #3/0AWG Copper

Length 8.0 ft

S

P

TPB1

Isc 3P 6442 A

Isc SLG 6742 A

FDR_PB1

2 SET(S) OF #3/0AWG Copper

Length 10.0 ft

PB1

Isc 3P= 6338 A

Isc SLG= 6583 A

X/R Pos= 3.33

FCB_GENETICS

FDR_GENETICS

1 SET(S) OF #3/0AWG Copper

Length 208.0 ft

GENETICS (MDP)

Isc 3P= 9745 A

Isc SLG= 8064 A

X/R Pos= 1.09

FCB_OFFICE P-3

FDR_OFFICE P-3

1 SET(S) OF #3/0AWG Copper

Length 165.0 ft

OFFICE P-3

Isc 3P= 3892 A

Isc SLG= 3480 A

X/R Pos= 1.38

FCB_SHOP P-5

FDR_SHOP P-5

1 SET(S) OF #1/0AWG Copper

Length 310.0 ft

SHOP P-5

Isc 3P= 2191 A Isc SLG= 1860 A

X/R Pos= 0.70

FCB_GEN BLDG P-1

FDR_GEN BLDG P-1

1 SET(S) OF #6AWG Copper

Length 3.0 ft

GEN BLDG P-1

Isc 3P= 6128 A

Isc SLG= 6292 A

X/R Pos= 2.62

FCB_HATCHERY

FDR_HATCHERY

1 SET(S) OF #4/0AWG Copper

Length 130.0 ft

HATCHERY (P4)

Isc 3P= 4442 A

Isc SLG= 4075 A

X/R Pos= 1.71

FCB_COOLER-FREEZER

FDR_COOLER-FREEZER

1 SET(S) OF #2AWG Copper

Length 55.0 ft

COOLER-FREEZER

Isc 3P= 4528 A Isc SLG= 4243 A

X/R Pos= 1.25

MCB_PDC1-ATS

FDR_T50KVA

1 SET(S) OF #1/0AWG Copper

Length 3.0 ft

S

P

T50KVA

Isc 3P 1800 A

FCB_MAIN OFFICE 1

FDR_EN-CB

1 SET(S) OF #4/0AWG Copper

Length 2.0 ft

FDR_ATS-MAIN OFFICE 1

1 SET(S) OF #3/0AWG Copper Length 16.0 ft

FCB_POLE

FDR_POLE

1 SET(S) OF #4/0AWG Aluminum

Length 50.0 ft

FDR_T75KVA

1 SET(S) OF #1/0AWG Copper Length 3.0 ft

S

P

T75KVA

Isc 3P 2177 A

FDR_ATS-MIDDLE OFFICE

1 SET(S) OF #3/0AWG Copper

Length 16.0 ft

FCB_COWLITZ PUD

FDR_COWLITZ PUD

1 SET(S) OF #4/0AWG Aluminum

Length 40.0 ft

FDR_MAIN OFFICE SUB PNL 1

1 SET(S) OF #1AWG Aluminum

Length 2.0 ft

FCB_MAIN OFFICE SUB PNL 1

MAIN OFFICE PNL 1

Isc 3P= 3664 A

Isc SLG= 3529 A

X/R Pos= 1.53

FDR_MAIN OFFICE PNL 1

1 SET(S) OF #3/0AWG Copper

Length 8.0 ft

MCB_MAIN OFFICE SUB PNL 1

MAIN OFFICE SUB PNL 1

Isc 3P= 3631 A

Isc SLG= 3490 A X/R Pos= 1.49

FDR_MIDDLE OFFICE

1 SET(S) OF #3/0AWG Copper Length 8.0 ft

MCB_MIDDLE OFFICE

FCB_MIDDLE OFFICE SUB

MIDDLE OFFICE

Isc 3P= 8037 A

Isc SLG= 7504 A

X/R Pos= 1.25

MIDDLE OFFICE SUB

Isc 3P= 5623 A

Isc SLG= 5011 A

X/R Pos= 0.72

FDR_MIDDLE OFFICE SUB

1 SET(S) OF #6AWG Copper

Length 18.0 ft

FDR_T50KVA2

1 SET(S) OF #1/0AWG Copper

Length 3.0 ft

S

P

T50KVA2

Isc 3P 1687 A

FCB_MAIN OFFICE 2

FDR_EN-CB2

1 SET(S) OF #4/0AWG Copper

Length 2.0 ft

FDR_ATS-MAIN OFFICE 2

1 SET(S) OF #3/0AWG Copper Length 16.0 ft

FCB_COWLITZ PUD2

FDR_COWLITZ PUD2

1 SET(S) OF #4/0AWG Aluminum

Length 40.0 ft

FDR_MAIN OFFICE SUB PNL 2

1 SET(S) OF #1AWG Aluminum

Length 2.0 ft

FCB_MAIN OFFICE SUB PNL 2

MAIN OFFICE PNL 2

Isc 3P= 8037 A

Isc SLG= 7504 A

X/R Pos= 1.25

FDR_MAIN OFFICE PNL 2

1 SET(S) OF #3/0AWG Copper Length 8.0 ft

MCB_MAIN OFFICE SUB PNL 2

MAIN OFFICE SUB PNL 2

Isc 3P= 7860 A

Isc SLG= 7311 A X/R Pos= 1.20

FDR_TP4

1 SET(S) OF #2AWG Copper

Length 40.0 ft

S

P TP4

Isc 3P 3189 A

Isc SLG 3371 A

FDR_P4

1 SET(S) OF #3/0AWG Copper

Length 8.0 ft

P4 Isc 3P= 3142 A

Isc SLG= 3301 A

X/R Pos= 2.13

MCB_P4

FCB_P4A

FDR_P4A

1 SET(S) OF #2AWG Copper

Length 65.0 ft

P4A Isc 3P= 2515 A Isc SLG= 2478 A

X/R Pos= 1.28

MCB_P4A

MCB_OFFICE P-3

FCB_P3 SUB FCB_SP1 FCB_SB

P3 SUB

Isc 3P= 3639 A

Isc SLG= 3231 A X/R Pos= 1.20

FDR_SP1

1 SET(S) OF #2AWG Copper

Length 75.0 ft

SP1

Isc 3P= 2707 A

Isc SLG= 2080 A X/R Pos= 0.88

FDR_P3 SUB

1 SET(S) OF #6AWG Copper

Length 6.0 ft

FDR_SB

1 SET(S) OF #2AWG Copper

Length 7.0 ft

SB

Isc 3P= 3750 A

Isc SLG= 3293 A X/R Pos= 1.30

MCB_PHYSIOLOGY (PHY-MDP)

FCB_TBFCB_TA

FDR_TA

1 SET(S) OF #1AWG Aluminum

Length 43.0 ft

S

P

TA

Isc 3P 3119 A

Isc SLG 3338 A

FDR_DISC-A

1 SET(S) OF #4/0AWG Aluminum

Length 5.0 ft

FDR_A

1 SET(S) OF #4/0AWG Aluminum

Length 43.0 ft

PNL A

Isc 3P= 2837 A

Isc SLG= 2943 A

X/R Pos= 1.55

DISC-A

FDR_TB

1 SET(S) OF #1AWG Aluminum

Length 43.0 ft

S

P

TB

Isc 3P 3119 A

Isc SLG 3338 A

FDR_DISC-B

1 SET(S) OF #4/0AWG Aluminum

Length 5.0 ft

FDR_B

1 SET(S) OF #4/0AWG Aluminum

Length 43.0 ft

PNL B

Isc 3P= 2837 A

Isc SLG= 2943 A

X/R Pos= 1.55

DISC-B

MCB_EXTRUDER (MDP)

MCB_NP1

FDR_NP1

1 SET(S) OF #3/0AWG Copper

Length 5.0 ft

NP1

Isc 3P= 10534 A Isc SLG= 8775 A

X/R Pos= 1.16

MCB_TNP2MCB_EXTRUDER DISCS

S

P

TNP2

Isc 3P 2302 A

Isc SLG 2380 A

FD…