H.H 4 report.pdf

Electrical Engineering Services & Systems 530 Eastpark CT, Suite G

Sandston, VA 23150

(724) 584-2626

GENERAL ORDER NUMBER: ERM9845.1

REPORT NUMBER: TQSIERM9845.1

SUBMITTED BY: JHONER GARCIA

www.EatonElectrical.com

SHORT-CIRCUIT, SELECTIVE & PROTECTIVE

DEVICE COORDINATION, AND AC ARC FLASH

INCIDENT ENERGY ANALYSIS

FOR

HUNTER HOLMES MCGUIRE VA MEDICAL

CENTER

RICHMOND, VA

VAULT #4

REVISION 0

DECEMBER, 2022

http://www.eatonelectrical.com/

H.H. McGuire VA Medical Center i

REVISION HISTORY

Rev # TQS / Order Number Issued Revision / Modification Description

0 TQSIERM9845.1 12/2022 Vault #4 Switchgear Initial Study Report Issue

H.H. McGuire VA Medical Center ii

TABLE OF CONTENTS

REVISION HISTORY ............................................................................................................ I

TABLE OF CONTENTS ....................................................................................................... II

EXECUTIVE SUMMARY ....................................................................................... 1-1

SHORT-CIRCUIT ANALYSIS................................................................................ 2-1

PROTECTIVE DEVICE COORDINATION STUDY ................................................ 3-1

SELECTIVE COORDINATION EVALUATION ...................................................... 4-1

RECOMMENDED PROTECTIVE DEVICE SETTINGS ......................................... 5-1

ARC FLASH INCIDENT ENERGY ANALYSIS ..................................................... 6-1

SYSTEM DATA ..................................................................................................... 7-1

SHORT-CIRCUIT INPUT REPORT ....................................................................... 8-1

SHORT-CIRCUIT RESULTS ................................................................................. 9-1

UTILITY DATA .................................................................................................... 10-1

H.H. McGuire VA Medical Center iii

APPLICABLE CODES AND STANDARDS ........................................................ 11-1

ONE-LINE DIAGRAM INDEX .............................................................................. 12-1

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EXECUTIVE SUMMARY

This summary report contains the results of analyses performed on the electrical distribution system for the Hunter Holmes McGuire VA Medical Center – Vault #4 switchgear in Richmond, VA. The purpose of this study is to evaluate existing electrical equipment at this facility. System data and necessary modeling assumptions are provided under Section 7.0.

1. Short-Circuit Analysis Perform a short-circuit study on the electrical distribution system shown in order to determine the available fault current at pertinent locations throughout the distribution system. The scope of the study includes:

• Analysis beginning at the incoming 13.2 kV utility service, continuing through the medium and low voltage substations, and ending at the low voltage panelboards and motor control centers as shown in Section 12.0 drawings.

The available fault currents determined by the short-circuit study will be used in the electrical distribution analyses.

2. Equipment Evaluation Evaluate the short-circuit ratings of protective devices and other distribution equipment found at the locations shown in Section 12.0 drawings.

3. Coordination Study Develop time-current coordination plots to derive coordinated settings for existing protective devices at Vault # 4 switchgear and equipment fed by it.

4. Selective Coordination Study Efforts were made to provide the best coordination possible; according to the NEC the essential system shall coordinate with supply side overcurrent protective devices for a fault duration extending beyond 0.1 second.

Review the selection of protective devices within the portion of the distribution system required to be selectively coordinated down to 0.1 seconds. Utilize time current curves to verify selective coordination.

5. Arc Flash Analysis Perform an arc flash incident energy analysis per NFPA 70E on the electrical distribution system as per Eaton’s scope of work.

An incident energy analysis is defined by NFPA 70E to be a component of an arc flash risk assessment used to predict the incident energy of an arc flash for a specified set of conditions.

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6. Recommendations Provide specific recommendations for improving the electrical distribution system performance and correcting any deficiencies found by the studies.

1. Short-Circuit Study The system was modeled for worst-case fault currents. Short-circuit currents were calculated for a three-phase bolted fault and single-line-to-ground fault at each bus shown on the one-line diagrams found in Section 12.0.

Cases for normal and emergency operation are evaluated. See Section 2.0, Section 8.0, and Section 9.0 for more information.

2. Equipment Evaluation The Equipment Evaluation is based on the power system worst-case short-circuit current configuration. The short-circuit ratings of protective devices and other distribution equipment are evaluated in Section 2.0, Tables 2.1, 2.2, 2.3, and 2.4 In summary of the tables listed above, specific equipment has failed the equipment evaluation and is considered overdutied. It is recommended that the overdutied equipment be reviewed for breaker and/or panelboard replacement/modification to comply with the short-circuit current ratings required. The following equipment has failed the equipment evaluation:

• PNL 1G-149

• PNL ECP1C

• PNL ECP1E

• PNL EEP1C

• PNL EEPDOC

• PNL P1AA

• PNL P1CA

• PNL P1CB

• PNL P1CC

• PNL P2AA

• PNL P2AB

• PNL P3AB

• PNL PD1A

• PNL PD3AA

• PNL PDCL

• PNL ECPDOC

• PNL EEP1E

• PNL ESP1C

• PNL ESPDOC

• PNL PD1C

• PNL PD1E

• PNL PD2A

• PNL PDOCA

• Vault #4 480V Right and Left switchgear

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For closed transition type automatic transfer switches which parallel more than one voltage source, even for a short time (< 100 ms), the available fault currents of the two sources have been considered for a combined fault current value that represents the contribution from both sources. NEC Article 110.9 states that equipment which is used to interrupt a fault must be properly rated for both the nominal voltage and the available fault current at the line side of that device. Furthermore, NEC Article 705.16 states that all fault currents from all power sources must be considered when examining the interrupting rating of a device. Location of the analyzed fault with respect to the switching devices, such as circuit breakers, was taken into consideration when determining the appropriate device interrupting current ratings.

The short-circuit withstand ratings of low voltage disconnect switches are not evaluated in this study. Care should be taken in order to ensure that these devices are applied within their UL listed short-circuit withstand ratings. The typical withstand ratings for Eaton disconnect switches (safety switches) range from 10,000A to 200,000A for certain fused types.

See Section 2.0 for detailed analysis and evaluation results.

3. Coordination Study The time-current coordination plots of the protective overcurrent devices are shown in Section 3.0. In developing the device settings, consideration was given to the isolation of faults, protection of cables, and protection of transformers.

Efforts were made to provide the best coordination possible with the existing protective devices. It should be understood that selective coordination between two instantaneous trip units cannot be achieved for fault levels above the instantaneous pickup of the upstream device. There is some overlapping of curves that cannot be avoided.

In summary of the coordination study, the following recommended changes would maximize coordination while maintaining adequate protection:

• VAULT 4L TCC 002 : Recommended settings are provided for the main breaker 4LA to improve coordination with upstream fuse and tie breaker. The same applies to main breaker 4LB. See VAULT 4L TCC 002 -REC for the updated coordination.

• VAULT 4L TCC 010 : ATS-EE1 feeder breaker does not coordinate with downstream breakers. Recommended settings are provided to improve coordination; however, overlap at the overload region cannot be avoided. Refer to VAULT 4L TCC 010 – REC. The NEC requires coordination of the essential electrical system for a fault duration extending beyond 0.1 second.

• VAULT 4L TCC 010 -E : Recommended settings are provided for the 1F Generator breaker to improve coordination with downstream breakers;

however, overlap at the overload region cannot be avoided. The NEC requires coordination of the essential electrical system for a fault duration extending beyond 0.1 second.

• VAULT 4L TCC 011 : Parking garage panel Main breaker does not coordinate with downstream breaker; thus, recommended settings are provided for the main breaker to achieve coordination.

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• VAULT 4L TCC 030 : Recommended settings are provided for panel H feeder breaker to improve coordination with downstream breaker.

• VAULT 4L TCC 050 : Recommended settings are provided for the PD3A feeder breaker to improve coordination with downstream breaker.

• VAULT 4L TCC 060 : Recommended settings are provided for PD3AA feeder breaker to improve coordination with downstream breaker.

• VAULT 4L TCC 070 : Recommended settings are provided for POCA feeder breaker to improve coordination.

• VAULT 4L TCC 100 : Recommended settings are provided for PD1W feeder breaker to improve coordination with downstream breakers.

• VAULT 4L TCC 110 : Recommended settings are provided for PD1EA feeder breaker to improve coordination with downstream breakers.

• VAULT 4R TCC 010 : Recommended settings are provided for PD1A feeder breaker to improve coordination with downstream breakers.

• VAULT 4R TCC 020 : Due to overlapping issues between PDCL feeder breaker and downstream breakers, recommended settings are provided for PDCL feeder breaker to improve coordination.

• VAULT 4R TCC 030 : Due to overlapping issues between PD1B feeder breaker and downstream breakers, recommended settings are provided for PD1B feeder breaker to improve coordination.

• VAULT 4R TCC 040 : Due to overlapping issues between PD2A feeder breaker and downstream breakers, recommended settings are provided for PD2A feeder breaker to improve coordination.

• VAULT 4R TCC 050 : Due to overlapping issues between ATS SC normal power feeder breaker and downstream breakers, recommended settings are provided for ATS SC feeder breaker to improve coordination.

• VAULT 4R TCC 050 -E : Minor overlap exists at the overload region between ATS SC emergency feeder breaker and downstream breakers. ATS SC and emergency breakers are part of the essential system and are required to coordinate down to 0.1 sec. If this is deemed a concern, an investigation should be performed to replace / retrofit breakers.

• VAULT 4R TCC 090 : Due to overlapping issues between ATS EC normal power feeder breaker and downstream breakers, recommended settings are provided for ATS EC feeder breaker to improve coordination.

• VAULT 4R TCC 090 -E : ATS EC emergency feeder breaker and downstream breakers coordinate down to 0.1 s.

• VAULT 4R TCC 130 : LD1W feeder breaker overlaps transformer T1X’s inrush point and could cause nuisance tripping while transformer is being energized.

Recommended settings are provided to improve coordination with transformer inrush point and downstream breakers.

• VAULT 4R TCC 140 : Due to overlapping issues between PD1C feeder breaker and downstream breakers, recommended settings are provided for PD1C feeder breaker to improve coordination.

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• VAULT 4R TCC 150 : Due to overlapping issues between Dialysis normal feeder breaker and downstream breakers, recommended settings are provided to improve coordination.

• VAULT 4R TCC 160 -E : Recommended settings are provided for the Hemo Generator output breaker to improve coordination with panel G main breaker;

however, overlap above 0.1 sec. cannot be avoided. If this is deemed a concern, an investigation should be performed to replace / retrofit breakers.

• VAULT 4R TCC 180 -E : Curves show the same issue as 4R TCC 160 -E.

Emergency feeders for ATS EEG, ECP1, and ECP2 do not coordinate. If this is deemed a concern, an investigation should be performed to replace / retrofit breakers.

• VAULT 4R TCC 181 : Recommended settings are provided for T2EC1-SEC- BKR-DSCT to improve coordination and protection to transformer T2EC1.

• VAULT 4R TCC 111 : Due to overlapping issues between EEH1A main breaker and downstream breakers, recommended settings are provided to improve coordination.

• VAULT 4R TCC 183 : Panel ECL2GE feeder and main breakers do not coordinate with downstream breakers. Coordination cannot be achieved due to the thermomagnetic characteristics of these breakers. If this is deemed a concern, an investigation should be performed to replace / retrofit breakers.

All of the adjustable low voltage electronic trip and thermal magnetic circuit breakers and medium voltage equipment should be tested and adjusted according to the recommended settings given in Section 5.0.

4. Selective Coordination Evaluation The emergency side feeder breakers for the following automatic transfer switches do not coordinate with the downstream breakers:

ATS SC

ATS EEG

ATS ECP1

ATS ECP2

ATS EE1

Also, panel ECL2GE does not meet coordination for faults beyond 0.1 s.

These equipment are part of the essential system and according to the NEC they should coordinate down to 0.1 s.

Refer to TCC curves in Section 3.0 and Section 4.0 for further information regarding selective coordination details.

5. Protective Device Settings Settings for the protective devices should be set as shown and recommended in Section 5.0.

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Each entry references a coordination plot number found in Section 3.0. The referenced plot illustrates the coordination of the listed device with the relevant “upstream” and “downstream” protective devices.

6. Arc Flash Incident Energy Analysis Details of the arc flash incident energy analysis are shown in Section 6.0. Please note for this study, the arc flash hazard has been calculated by performing an incident energy analysis, with the calculation process as specified in IEEE 1584-2018. The results of this study can be used by qualified workers to determine the arc flash boundary and select appropriate arc flash PPE as part of an overall arc flash risk assessment. NFPA 70E provides guidance on the selection of arc rated clothing and other PPE based on the results of an incident energy analysis. It is the responsibility of the employer and qualified person(s) to conduct an overall arc flash risk assessment as detailed in NFPA 70E Article 130.5 before the commencement of work on electrical equipment. The risk associated with performing energized electrical work will vary based on the work being performed as well as the condition of the equipment and other factors that can be best determined by a qualified person in the field.

The PPE requirements outlined in NFPA 70E only address the thermal hazards associated with arc flash events and do not provide protection against other possible physical trauma resulting from an arc flash event. See NFPA 70E Article 120 for details on establishing an electrically safe work condition.

If the incident energy levels at work locations found in this report are unacceptable to the H.H. McGuire VA Medical Center, then those locations should be individually evaluated to determine the most effective means of reducing the incident energy. It is recommended an Arc Flash Mitigation Study be added to the study scope to find the best solution(s) possible to reduce incident energy while maintaining the highest degree of reliability. Also, in some situations the equipment can be upgraded with equipment that is safer by design in order to reduce the risk considering the work being performed.

a) Equipment Design: The following equipment may not reduce calculated incident energy, but is safer by design and can help reduce the risk to the qualified person.

Examples:

• Built in IR windows for low voltage and medium voltage switchgear.

• Remote Racking Device(s).

• Remote “open”/ “close” breaker control.

b) Reducing Incident Energy: The following equipment solutions when applied appropriately can help reduce the calculated incident energy at specific work locations. An Arc Flash Mitigation Study should be included with any of these solutions so design engineering, calculated proof of reduced incident energies, updated arc flash labels, and appropriate device settings can be provided.

Examples:

• Provide low voltage breakers with Arc flash Reduction Maintenance System settings and maintenance switch.

• Revise nonadjustable thermal magnetic breakers or fuses to adjustable electronic trip breakers with Eaton 210+ or 310+ trip units.

H.H. McGuire VA Medical Center 1-7

• Relocate main breaker or fuse located on transformer secondary to a separate enclosure.

c) Arc Flash Training:

Training on arc flash safety, the proper identification and use of the results of this report, and on the use of arc flash labels is recommended. NFPA 70E recommends workers receive periodic training in safety related work practices and the changes associated with 70E at intervals not to exceed three years.

NFPA 70E requires that the arc flash analysis be updated:

• Every five years (at minimum)

• When the electrical system is modified, including renovations, additions, or subtractions to the system

7. Testing and Preventative Maintenance The NFPA 70E Section 205.3 and 205.4 requires that regularly scheduled testing and preventative maintenance be performed to ensure that the electrical distribution equipment continues to perform at an optimum level. Testing should entail primary injection testing of all circuit breakers to verify proper tripping ranges, contact resistance testing, insulation resistance testing and complete switchgear and transformer cleaning and inspection. Refer to NFPA-70B for specific types of testing and interval recommendations. The industry generally performs breaker testing every 3-5 years.

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SHORT-CIRCUIT ANALYSIS

The short-circuit study determines the fault currents that flow in the system during various fault conditions. A system model was created using SKM Systems Analysis software. The calculated fault currents are used in the device evaluation and coordination studies.

NEC Article 110.24(A) requires that service entrance equipment is labeled with the following pieces of information:

• Available fault current

• Date on which the fault current was calculated Article 110.24(B) adds that if there is a modification that may change this fault current value, it must be recalculated. The field marking must be updated to reflect the new value of available fault current. See Section 8.0 and Section 9.0 for the computer generated input data and output data.

Separate “Z” (complex), “X” (reactive), and "R" (resistive) networks are used for the short-circuit analysis. Complex network reduction and the relationship E/Z are used to calculate the fault current magnitude and angle at each faulted bus. The complex equivalent circuit impedance, Z, is calculated by the reduction of the “Z” (complex) network. The X/R ratios calculated for each fault condition are based on the separate reduction of the X and R networks. These X/R ratios are used for the calculation of fault duty multipliers, to evaluate the short-circuit ratings of system components.

The software is capable of generating three types of short-circuit reports for both balanced (three-phase bolted) and unbalanced (line-to-ground) faults. The reports that are generated depend on the system that is being evaluated.

The three types of short-circuit reports are:

• Fault Report (for low voltage)

• Momentary Duty Report (for medium voltage)

• Interrupting Duty Report (for medium voltage)

1. Fault Report The fault currents reported in the “Fault Report” are applicable to low voltage devices and components. The fault currents calculated in this report are based on the contribution data derived from IEEE Std C37.13™. The fault currents are calculated as follows:

• Motor and generator sub transient reactance values (Xd”) are adjusted per the first cycle duty multipliers described in IEEE Std 3002.3™.

• The complex equivalent circuit impedance, Z, is calculated by network reduction of the “Z” (complex) network.

• The momentary symmetrical current = E/Z.

• The X/R ratio is equal to the equivalent circuit reactance, X, divided by the equivalent circuit resistance, R. As discussed above, X is calculated by the

H.H. McGuire VA Medical Center 2-2 reduction of the “X” (reactive) network and R is calculated by the reduction of the “R” (resistive) network.

Multiplying factors are determined, and used to adjust the calculated symmetrical fault current. The adjusted current is used to evaluate low voltage protective devices. Low voltage output algorithms and output reports reflect NEMA AB-1 molded case breaker de-rating multipliers. Breakers are de-rated for circuits where the power factor is lower than the NEMA test circuit (higher X/R ratio). The multipliers adjust the symmetrical fault current to the value associated with the systems fault point X/R ratio. The adjusted value listed on the report may then be compared directly with the manufacturer's published interrupting rating.

2. Momentary Duty Report The “Momentary Duty Report” contains the calculated fault currents that occur during the first half-cycle of the fault. The momentary fault currents are used to evaluate medium and high voltage fuses, and the “closing and latching” capability (momentary rating) of medium and high voltage breakers. The fault currents reported in the “Momentary Duty Report” are calculated as follows:

• Motor and generator sub transient reactance values (Xd”) are adjusted per the first cycle duty multipliers described in IEEE Std 3002.3.

• The complex equivalent circuit impedance, Z, is calculated by network reduction of the “Z” (complex) network.

• The momentary symmetrical current = E/Z.

• The X/R ratio reported is equal to the equivalent circuit reactance, X, divided by the equivalent circuit resistance, R. As discussed above, X is calculated by the reduction of the “X” (reactive) network and R is calculated by the reduction of the “R” (resistive) network.

• The momentary asymmetrical current is calculated and reported in two different ways, once as “sym*1.6” and again as “momentary based on X/R”. The “sym*1.6” value is the momentary symmetrical current multiplied by 1.6. The “momentary based on X/R” value is the momentary symmetrical current multiplied by

( )( )e RX21 2+ − π

3. Interrupting Duty Report The fault currents reported in the “Interrupting Duty Report” are used to evaluate the interrupting rating of medium- and high-voltage breakers. The interrupting symmetrical current is calculated as follows:

• Motor and generator sub transient reactance values (Xd”) are adjusted per the interrupting duty multipliers described in IEEE Std 3002.3.

• The complex equivalent circuit impedance, Z, is calculated by network reduction of the “Z” (complex) network.

• The interrupting symmetrical current = E/Z.

• The X/R ratio reported is equal to the equivalent circuit reactance, X, divided by the equivalent circuit resistance, R. As discussed above, X is calculated by the

H.H. McGuire VA Medical Center 2-3 reduction of the “X” (reactive) network and R is calculated by the reduction of the “R” (resistive) network.

• The calculated X/R ratio is used to determine the minimum contact parting time multiplying factors for 2, 3, 5, and 8 cycle breakers. The multiplying factors are based on IEEE Std C37.5™ and IEEE Std C37.010™ standards. The multiplying factors are applied to the interrupting symmetrical current in order to calculate the RMS short-circuit current interrupting duty for 2, 3, 5, and 8 cycle breakers. This duty is compared to the symmetrical current interrupting rating of the circuit breaker. NACD (No AC Decrement) ratios are calculated with consideration of generator "Local" and "Remote" contributions as outlined in IEEE Std C37.010™.

• Motor and generator impedance multipliers for the short-circuit calculations are summarized in the following table. This is based on the recommended combination network for comprehensive multi-voltage system calculations (from IEEE Std 3002.3:

Machine Type Impedance

(First Cycle Duty) Impedance

(Interrupting Duty)

Turbine generators, Condensers, Hydrogenerators with amortisseur windings

1.0 Xd" 1.0 Xd"

Synchronous motors 1.0 Xd" 1.5 Xd"

Induction motors > 1000 hp at speed ≤ 1800 RPM, or > 250 hp at 3600 RPM.

1.0 Xd" 1.5 Xd"

Induction motors ≥ 50 hp not covered above. 1.2 Xd" 3.0 Xd"

Induction motors < 50 hp 1.67 Xd" Neglect

Note: Xd" is the sub transient reactance of the rotating machine.

The objective of the short-circuit analysis is to calculate the maximum short-circuit currents produced by balanced three-phase and unbalanced faults at each bus shown on the one-line diagrams.

1. Short-Circuit System Model The system was modeled for worst-case fault currents. Short-circuit currents were calculated for a three-phase bolted fault and single-line-to-ground fault at each bus shown on the study one-line diagrams.

a) Evaluated Short-Circuit Cases:

The following short-circuit study cases were evaluated:

• Study Case No. 1 – System supplied from Broad Rock utility source.

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• Study Case No. 2 – System supplied from Hopkins Road utility source.

• Study Case No. 3 – System supplied from emergency generators.

• Study Case No. 4 – System supplied from utility and emergency generators while ATS in closed transition.

For closed transition type automatic transfer switches which parallel more than one voltage source, even for a short time (< 100 ms), the available fault currents of the two sources have been considered for a combined fault current value that represents the contribution from both sources. NEC Article 110.9 states that equipment which is used to interrupt a fault must be properly rated for both the nominal voltage and the available fault current at the line side of that device. Furthermore, NEC Article 705.16 states that all fault currents from all power sources must be considered when examining the interrupting rating of a device. Location of the analyzed fault with respect to the switching devices, such as circuit breakers, was taken into consideration when determining the appropriate device interrupting current ratings.

The purpose of the equipment evaluation is to compare the maximum calculated short-circuit currents to the short-circuit ratings of protective devices. The comparison is made in order to determine if the device can interrupt or withstand the available fault currents of the electrical system to which the device is applied, as required by NEC Articles 110.9 and 110.10. The device evaluation follows the evaluation procedures outlined in IEEE Std C37.13, IEEE Std C37.010, IEEE Std C37.5, IEEE Std C37.41™, IEEE Std 3004.5™, and applicable ANSI, NEMA, and UL standards.

The results of the short-circuit equipment evaluation are summarized in Table 2.1, 2.2,

2.3 and 2.4. The tables indicate “Bus I.D.” (corresponds to bus designations used in the one-line diagrams), “Manufacturer”, “Status” (Pass, fail, unknown, or marginal), “Type” (equipment category), “Equip Volts”, calculated short-circuit duty, the equipment short-circuit rating, the series rating (if applicable), and the maximum duty rating.

The maximum duty rating is calculated by:

RatingCDeviceS dutyCS

If the short-circuit rating of a device is not known, and/or short-circuit rating information is not available, a Minimum Required short-circuit rating is listed. For equipment with series ratings, the maximum duty rating is calculated using the series rating instead of the individual device short-circuit rating. All short-circuit current values are reported in units of kA.

1. For low voltage devices:

The calculated short-circuit duty is reported under “Calc Isc (kA)" and the device short-circuit rating is reported under "Equip Isc (kA)". The calculated duty has been adjusted accordingly per the system X/R and device test X/R.

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2. For medium/high voltage breakers:

The calculated interrupting short-circuit duty is reported under "Calc Isc (kA)" and the breaker short-circuit interrupting rating is reported under "Equip Isc (kA)". The interrupting duty has been adjusted per multiplying factors based on the breaker clearing time and system X/R. The calculated momentary duty (i.e. close-and-latch duty) is reported under "Calc Mom (kA)". The breaker momentary (i.e. close-and-latch) rating is reported under "Equip Msc (kA)".

3. For medium/high voltage fuses, switches, and motor starters:

The calculated momentary symmetrical short-circuit duty is reported under "Calc Isc (kA)" and the device's momentary symmetrical short-circuit rating is reported under "Equip Isc (kA)". The calculated momentary asymmetrical duty is reported under "Calc Mom (kA)". The device's momentary asymmetrical short-circuit rating is reported under "Equip Mom (kA)".

Information used in modeling the power system to provide conservative, worst-case results is listed in Section 7.0. The results of the short-circuit analysis, including calculated branch contributions, are provided under Section 9.0. The one-line diagrams with referenced bus identification are included in Section 12.0.

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Table 2.1 – Low-Voltage Equipment Evaluation (Broad Rock – Utility contribution)

Bus I.D. Status Manufacturer Type Bus Voltage (V)

Calc Isc (kA)

Equip Isc (kA) Rating %

ATS-CC-V4R Passed ASCO LV ATS 480 28.20 (*N1) 42.00 67.15

ATS-EC-V4R Passed ASCO LV ATS 480 28.20 (*N1) 42.00 67.15

ATS-ECP1-V4R Passed ASCO LV ATS 480 10.41 42.00 24.78

ATS-ECP2-V4R Passed ASCO LV ATS 480 10.41 42.00 24.78

ATS-EEG-V4R Passed ASCO LV ATS 480 10.49 42.00 24.97

ATS-SC-V4R Passed ASCO LV ATS 480 22.92 42.00 54.58

ECL-3A-1-DSCT-V4R Passed EATON LV SWITCH 480 13.32 200.00 6.66

ECL2GB-DSCT-V4R Passed EATON LV SWITCH 208 6.88 100.00 6.88

ECL2GC-DSCT-V4R Passed EATON LV SWITCH 208 6.80 100.00 6.80

ECL2GE-DSCT-V4R Passed EATON LV SWITCH 208 6.54 65.00 10.06

EE1-ATS-V4L Passed ASCO LV ATS 480 14.17 50.00 28.34

EE2-ATS-V4R Passed ASCO LV ATS 480 9.10 42.00 21.66

EE3-ATS-V4L Passed ASCO LV ATS 480 8.93 42.00 21.27

ELVTR-1-SW-V4L Passed LV SWITCH 480 4.24 200.00 2.12

ELVTR-2-SW-DSCT-V4L Passed LV SWITCH 480 8.94 200.00 4.47

ELVTR-2-SW-V4L Passed LV SWITCH 480 4.35 200.00 2.17

L1-PNL-V4L Passed GE LV Panelboard 208 2.26 (*N1) 10.00 22.64

L2-PNL-V4L Passed GE LV Panelboard 208 2.24 (*N1) 10.00 22.41

L2EA-SEC1-PNL-V4L Passed EATON LV Panelboard 208 7.35 22.00 33.42

L2EA-SEC2-PNL-V4L Passed EATON LV Panelboard 208 7.24 22.00 32.92

L2EB-PNL-V4L Passed EATON LV Panelboard 208 6.35 (*N1) 10.00 63.54

LD3A-1-PNL-V4L Passed EATON LV Panelboard 208 3.72 22.00 16.90

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Bus I.D. Status Manufacturer Type Bus Voltage (V)

Calc Isc (kA)

Equip Isc (kA) Rating %

P2EA-PNL-V4L Passed EATON LV Panelboard 480 15.61 35.00 44.61

P2GC-DSCT-V4R Passed EATON LV SWITCH 480 18.67 35.00 53.35

P2GF-DSCT-V4R Passed EATON LV SWITCH 480 5.03 65.00 7.74

PARKING-DSCNT-V4L Passed SQUARE D LV SWITCH 480 11.56 35.00 33.02

PNL LD1A-V4R Passed FPE LV Panelboard 208 3.99 25.00 15.95

PNL-1G-140-V4L Passed FPE LV Panelboard 480 12.55 65.00 19.31

PNL-1G-148-V4L Passed FPE LV Panelboard 480 12.55 14.00 89.66

PNL-1G-149-V4L Failed FPE LV Panelboard 480 *14.66 14.00 *104.70

PNL-1G-155-V4L Passed FPE LV Panelboard 480 16.67 65.00 25.64

PNL-1G-173-V4L Passed FPE LV Panelboard 480 12.55 65.00 19.31

PNL-1G-174-V4L Passed FPE LV Panelboard 480 9.90 14.00 70.70

PNL-1G-184-V4L Passed FPE LV Panelboard 480 9.90 65.00 15.23

PNL-ECL-3A-1-V4R Passed EATON LV Panelboard 208 5.68 22.00 25.80

PNL-ECL-3A-1A-V4R Passed SQUARE D LV Panelboard 208 3.94 10.00 39.35

PNL-ECL1A-V4R Passed FPE LV Panelboard 208 3.75 14.00 26.79

PNL-ECL1B-V4R Passed FPE LV Panelboard 208 3.32 14.00 23.68

PNL-ECL1C-V4R Passed FPE LV Panelboard 208 6.41 14.00 45.76

PNL-ECL1CA-V4R Passed SQUARE D LV Panelboard 208 7.84 (*N1) 10.00 78.43

PNL-ECL1D-V4R Passed FPE LV Panelboard 208 1.64 14.00 11.74

PNL-ECL1E-V4R Passed FPE LV Panelboard 208 3.51 14.00 25.10

PNL-ECL1W-V4R Passed FPE LV Panelboard 208 2.80 14.00 20.02

PNL-ECL2A-V4R Passed FPE LV Panelboard 208 3.55 14.00 25.37

PNL-ECL2G-V4R Passed FPE LV Panelboard 208 2.99 14.00 21.35

H.H. McGuire VA Medical Center 2-8

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-ECL2GB-V4R Passed EATON LV Panelboard 208 5.46 22.00 24.82

PNL-ECL2GC-V4R Passed EATON LV Panelboard 208 5.42 22.00 24.62

PNL-ECL2GD-V4R Passed EATON LV Panelboard 208 3.38 22.00 15.35

PNL-ECL2GE-V4R Passed EATON LV Panelboard 208 4.42 22.00 20.11

PNL-ECL4G-V4R Passed FPE LV Panelboard 208 3.05 14.00 21.77

PNL-ECLCL-V4R Passed SQUARE D LV Panelboard 208 4.04 10.00 40.39

PNL-ECLDOC-V4R Passed FPE LV Panelboard 208 7.73 (*N1) 14.00 55.22

PNL-ECP1A-V4R Passed FPE LV Panelboard 480 8.06 14.00 57.55

PNL-ECP1B-V4R Passed FPE LV Panelboard 480 6.40 14.00 45.69

PNL-ECP1C-V4R Failed FPE LV Panelboard 480 *17.79 14.00 *127.09

PNL-ECP1D-V4R Passed FPE LV Panelboard 480 3.26 14.00 23.31

PNL-ECP1E-V4R Failed FPE LV Panelboard 480 *15.08 14.00 *107.73

PNL-ECP1W-V4R Passed FPE LV Panelboard 480 4.28 14.00 30.61

PNL-ECP2A-V4R Passed FPE LV Panelboard 480 7.27 14.00 51.95

PNL-ECP2B-V4R Passed FPE LV Panelboard 480 6.14 14.00 43.87

PNL-ECP3A-V4R Passed FPE LV Panelboard 480 6.94 14.00 49.54

PNL-ECPDOC-V4R Passed SQUARE D LV Panelboard 480 27.05 30.00 90.17

PNL-EEH1A-V4R Passed EATON LV Panelboard 480 6.45 35.00 18.42

PNL-EEH1A3-V4R Passed EATON LV Panelboard 480 5.14 35.00 14.69

PNL-EEH1B-V4L Passed EATON LV Panelboard 480 7.83 65.00 12.04

PNL-EEH1B3-V4L Passed EATON LV Panelboard 480 6.99 35.00 19.98

PNL-EEHGA-V4L Passed EATON LV Panelboard 480 8.57 35.00 24.48

PNL-EEL1A-V4R Passed FPE LV Panelboard 208 3.77 14.00 26.90

H.H. McGuire VA Medical Center 2-9

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-EEL1B-V4R Passed SQUARE D LV Panelboard 208 9.09 (*N1) 10.00 90.94

PNL-EEL1C-V4R Passed EATON LV Panelboard 208 4.63 10.00 46.25

PNL-EEL1D-V4R Passed FPE LV Panelboard 208 1.92 14.00 13.68

PNL-EEL1E-V4R Passed FPE LV Panelboard 208 2.98 14.00 21.26

PNL-EEL1W-V4R Passed FPE LV Panelboard 208 2.80 14.00 19.99

PNL-EEL2A-V4R Passed FPE LV Panelboard 208 3.65 14.00 26.05

PNL-EEL2B-V4R Passed FPE LV Panelboard 208 7.62 14.00 54.42

PNL-EEL2BA-V4R Passed FPE LV Panelboard 208 7.19 14.00 51.33

PNL-EEL3A-V4R Passed FPE LV Panelboard 208 3.76 14.00 26.88

PNL-EEL3AA-V4R Passed FPE LV Panelboard 208 3.70 14.00 26.44

PNL-EEL3AB-V4R Passed FEDERAL PACIFIC LV Panelboard 208 1.34 14.00 9.59

PNL-EEL3AC-V4R Passed SQUARE D LV Panelboard 208 3.00 10.00 29.97

PNL-EEL5G-V4R Passed SQUARE D LV Panelboard 208 3.56 10.00 35.57

PNL-EELDOC-V4R Passed FPE LV Panelboard 208 9.88 (*N1) 14.00 70.55

PNL-EELGA-V4L Passed EATON LV Panelboard 208 1.68 22.00 7.62

PNL-EELOC-V4R Passed FPE LV Panelboard 208 9.03 14.00 64.47

PNL-EEP1A-V4R Passed FPE LV Panelboard 480 8.21 14.00 58.66

PNL-EEP1B-V4R Passed FPE LV Panelboard 480 7.23 14.00 51.61

PNL-EEP1C-V4R Failed FPE LV Panelboard 480 *20.57 14.00 *146.95

PNL-EEP1D-V4R Passed FPE LV Panelboard 480 2.33 14.00 16.66

PNL-EEP1E-V4R Passed FPE LV Panelboard 480 12.96 14.00 92.55

PNL-EEP1W-V4R Passed FPE LV Panelboard 480 4.67 14.00 33.33

PNL-EEP2A-V4R Passed FPE LV Panelboard 480 7.96 14.00 56.87

H.H. McGuire VA Medical Center 2-10

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-EEP2B-V4R Passed FPE LV Panelboard 480 6.63 14.00 47.33

PNL-EEP3A-V4R Passed FPE LV Panelboard 480 7.52 14.00 53.72

PNL-EEPDOC-V4R Failed FPE LV Panelboard 480 *27.07 (*N1) 22.00 *123.05

PNL-EEPOC-V4R Passed FPE LV Panelboard 480 21.93 65.00 33.73

PNL-ESL-3A-1-V4R Passed EATON LV Panelboard 208 3.23 22.00 14.67

PNL-ESL1A-V4R Passed FPE LV Panelboard 208 2.36 14.00 16.89

PNL-ESL1B-V4R Passed FPE LV Panelboard 208 2.52 14.00 18.03

PNL-ESL1C-V4R Passed FPE LV Panelboard 208 3.53 14.00 25.24

PNL-ESL1D-V4R Passed FPE LV Panelboard 208 1.39 14.00 9.93

PNL-ESL1E-V4R Passed FPE LV Panelboard 208 2.95 14.00 21.06

PNL-ESL1W-V4R Passed FPE LV Panelboard 208 2.11 14.00 15.10

PNL-ESL2B-V4R Passed FPE LV Panelboard 208 2.37 14.00 16.93

PNL-ESL3A-V4R Passed FPE LV Panelboard 208 2.11 14.00 15.11

PNL-ESLDOC-V4R Passed FPE LV Panelboard 208 4.96 18.00 27.55

PNL-ESP-2GB-V4R Passed EATON LV Panelboard 480 6.76 25.00 27.05

PNL-ESP1A-V4R Passed FPE LV Panelboard 480 5.07 14.00 36.23

PNL-ESP1B-V4R Passed FPE LV Panelboard 480 5.51 14.00 39.35

PNL-ESP1C-V4R Passed FPE LV Panelboard 480 12.89 14.00 92.07

PNL-ESP1D-V4R Passed FPE LV Panelboard 480 1.60 14.00 11.42

PNL-ESP1E-V4R Passed FPE LV Panelboard 480 10.67 14.00 76.20

PNL-ESP1W-V4R Passed FPE LV Panelboard 480 3.48 14.00 24.85

PNL-ESP2B-V4R Passed FPE LV Panelboard 480 5.02 14.00 35.83

PNL-ESP3A-V4R Passed FPE LV Panelboard 480 4.33 14.00 30.96

H.H. McGuire VA Medical Center 2-11

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-ESPDOC-V4R Failed FPE LV Panelboard 480 *22.33 22.00 *101.48

PNL-ESPOC-V4R Passed FPE LV Panelboard 480 15.13 65.00 23.28

PNL-GUARD-SHACK-V4L Passed SQUARE D LV Panelboard 208 2.31 10.00 23.11

PNL-H-V4L Passed GE LV Panelboard 480 20.00 25.00 80.02

PNL-L0CA-V4L Passed FPE LV Panelboard 208 1.06 18.00 5.91

PNL-L11EDA-V4L Passed GE LV Panelboard 208 3.49 10.00 34.92

PNL-L1AA-V4R Passed FPE LV Panelboard 208 3.98 14.00 28.45

PNL-L1AB-V4R Passed FPE LV Panelboard 208 2.33 14.00 16.67

PNL-L1AB2-V4R Passed CUTLER-HAMMER LV Panelboard 208 3.64 10.00 36.38

PNL-L1AC-V4R Passed SQUARE D LV Panelboard 208 4.14 (*N1) 10.00 41.39

PNL-L1BA-V4R Passed FPE LV Panelboard 208 2.23 14.00 15.91

PNL-L1BB-V4R Passed FPE LV Panelboard 208 1.64 14.00 11.72

PNL-L1BC-V4R Passed SQUARE D LV Panelboard 208 2.40 (*N1) 10.00 23.98

PNL-L1CA-V4R Passed EATON LV Panelboard 208 2.98 (*N1) 10.00 29.81

PNL-L1CB-V4R Passed FPE LV Panelboard 208 2.83 14.00 20.19

PNL-L1DA-V4L Passed FPE LV Panelboard 208 4.48 14.00 32.01

PNL-L1DB-V4L Passed FPE LV Panelboard 208 2.85 14.00 20.33

PNL-L1DC-V4L Passed FPE LV Panelboard 208 2.62 14.00 18.74

PNL-L1EA-V4L Passed FPE LV Panelboard 208 5.56 14.00 39.71

PNL-L1EB-V4L Passed FPE LV Panelboard 208 5.55 14.00 39.63

PNL-L1EC-V4L Passed FPE LV Panelboard 208 3.21 14.00 22.95

PNL-L1ED-V4L Passed SQUARE D LV Panelboard 208 2.92 10.00 29.20

PNL-L1EDA-B-V4L Passed EATON LV Panelboard 208 2.83 22.00 12.86

H.H. McGuire VA Medical Center 2-12

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-L1WA-V4R Passed FPE LV Panelboard 208 6.74 14.00 48.15

PNL-L1WB-V4R Passed FPE LV Panelboard 208 6.82 14.00 48.70

PNL-L1WC-V4R Passed FPE LV Panelboard 208 2.97 14.00 21.18

PNL-L1WD-V4R Passed FPE LV Panelboard 208 2.63 14.00 18.80

PNL-L2AA-V4R Passed FPE LV Panelboard 208 4.04 14.00 28.86

PNL-L2AB-V4R Passed FPE LV Panelboard 208 4.02 14.00 28.69

PNL-L2AC-V4R Passed FPE LV Panelboard 208 2.27 14.00 16.20

PNL-L2BA-V4R Passed FPE LV Panelboard 208 3.85 14.00 27.53

PNL-L2BB-V4R Passed FPE LV Panelboard 208 2.34 14.00 16.68

PNL-L2BC-V4R Passed FPE LV Panelboard 208 2.34 14.00 16.68

PNL-L2GE-V4R Passed EATON LV Panelboard 208 8.46 22.00 38.46

PNL-L2GF-V4R Passed EATON LV Panelboard 208 8.46 22.00 38.46

PNL-L2GG-V4R Passed EATON LV Panelboard 208 3.27 22.00 14.86

PNL-L2GH-V4R Passed EATON LV Panelboard 208 3.27 22.00 14.86

PNL-L3AA-V4L Passed FPE LV Panelboard 208 4.74 14.00 33.86

PNL-L3AB-V4L Passed FPE LV Panelboard 208 4.81 14.00 34.37

PNL-L3AC-V4L Passed FPE LV Panelboard 208 4.70 14.00 33.59

PNL-L3AD-V4L Passed FPE LV Panelboard 208 6.87 14.00 49.06

PNL-L3AE-V4L Passed FPE LV Panelboard 208 6.87 14.00 49.06

PNL-L3AF-V4L Passed FPE LV Panelboard 208 6.87 14.00 49.06

PNL-LCLA-V4R Passed SQUARE D LV Panelboard 208 1.83 10.00 18.32

PNL-LCLB-V4R Passed SQUARE D LV Panelboard 208 1.83 10.00 18.32

PNL-LD1A-V4R Passed FPE LV Panelboard 208 4.12 18.00 22.87

H.H. McGuire VA Medical Center 2-13

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-LD1B-V4R Passed FPE LV Panelboard 208 2.27 14.00 16.23

PNL-LD1C-1-V4R Passed SQUARE D LV Panelboard 208 2.98 (*N1) 10.00 29.81

PNL-LD1C-V4R Passed FPE LV Panelboard 208 2.87 14.00 20.49

PNL-LD1D-V4L Passed FPE LV Panelboard 208 5.05 14.00 36.07

PNL-LD1E-V4L Passed FPE LV Panelboard 208 5.80 18.00 32.21

PNL-LD1W-V4R Passed FPE LV Panelboard 208 7.02 25.00 28.08

PNL-LD2A-V4R Passed FPE LV Panelboard 208 4.15 14.00 29.65

PNL-LD2G-V4R Passed EATON LV Panelboard 208 9.19 22.00 41.76

PNL-LD3A-V4L Passed FPE LV Panelboard 208 4.96 18.00 27.57

PNL-LD3AA-V4L Passed FPE LV Panelboard 208 7.28 42.00 17.33

PNL-LDCL-V4R Passed SQUARE D LV Panelboard 208 5.96 (*N1) 10.00 59.58

PNL-LP1-V4L Passed SQUARE D LV Panelboard 208 2.79 (*N1) 10.00 27.90

PNL-P0CA-V4L Passed FPE LV Panelboard 480 12.27 25.00 49.06

PNL-P1-1EDA-V4L Passed GE LV Panelboard 480 9.54 14.00 68.13

PNL-P1AA-V4R Failed FPE LV Panelboard 480 *15.07 14.00 *107.67

PNL-P1AB-V4R Passed FPE LV Panelboard 480 6.03 14.00 43.05

PNL-P1BA-V4R Passed FPE LV Panelboard 480 10.92 14.00 78.00

PNL-P1BB-V4R Passed FPE LV Panelboard 480 5.35 14.00 38.25

PNL-P1CA-V4R Failed FPE LV Panelboard 480 *22.73 14.00 *162.34

PNL-P1CB-V4R Failed FPE LV Panelboard 480 *18.50 14.00 *132.17

PNL-P1CC-V4R Failed FPE LV Panelboard 480 *21.45 14.00 *153.24

PNL-P1DA-V4L Passed FPE LV Panelboard 480 8.71 18.00 48.37

PNL-P1EA-V4L Passed FPE LV Panelboard 480 19.94 65.00 30.68

H.H. McGuire VA Medical Center 2-14

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-P1EDA-V4L Passed FPE LV Panelboard 480 17.88 25.00 71.53

PNL-P1WA-V4L Passed FPE LV Panelboard 480 14.03 65.00 21.58

PNL-P1WB-V4L Passed FPE LV Panelboard 480 4.97 14.00 35.51

PNL-P2AA-V4R Failed FPE LV Panelboard 480 *15.49 14.00 *110.67

PNL-P2AB-V4R Failed FPE LV Panelboard 480 *15.11 14.00 *107.94

PNL-P2BA-V4R Passed FPE LV Panelboard 480 10.50 14.00 75.02

PNL-P2GC-V4R Passed EATON LV Panelboard 480 12.87 25.00 51.47

PNL-P2GE-V4R Passed EATON LV Panelboard 480 8.58 25.00 34.31

PNL-P2GF-V4R Passed EATON LV Panelboard 480 5.01 35.00 14.32

PNL-P3AA-V4L Passed FPE LV Panelboard 480 10.54 14.00 75.26

PNL-P3AB-V4L Failed FPE LV Panelboard 480 *18.09 14.00 *129.20

PNL-PARKING-GARG-V4L Passed SQUARE D LV Panelboard 480 6.51 18.00 36.18

PNL-PCLA-V4R Passed SQUARE D LV Panelboard 480 12.95 18.00 71.97

PNL-PCLB-V4R Passed SQUARE D LV Panelboard 480 12.95 18.00 71.97

PNL-PD1A-V4R Failed FPE LV Panelboard 480 *16.26 14.00 *116.17

PNL-PD1B-V4R Passed FPE LV Panelboard 480 11.58 14.00 82.74

PNL-PD1C-V4R Passed FPE LV Panelboard 480 24.08 25.00 96.33

PNL-PD1D-V4L Passed FPE LV Panelboard 480 9.05 14.00 64.65

PNL-PD1E-V4L Passed FPE LV Panelboard 480 21.66 22.00 98.43

PNL-PD1EA-V4L Passed FPE LV Panelboard 480 26.66 65.00 41.01

PNL-PD1W-V4L Passed FPE LV Panelboard 480 14.86 22.00 67.53

PNL-PD2A-V4R Passed FPE LV Panelboard 480 16.50 18.00 91.69

PNL-PD2B-V4R Passed FPE LV Panelboard 480 11.02 14.00 78.74

H.H. McGuire VA Medical Center 2-15

(V)

Calc Isc (kA)

Equip Isc (kA) Rating %

PNL-PD3A-V4L Passed FPE LV Panelboard 480 11.16 30.00 37.19

PNL-PD3AA-V4L Failed FPE LV Panelboard 480 *20.03 14.00 *143.08

PNL-PDCL-V4R Failed EATON LV Panelboard 480 *29.05 (*N1) 14.00 *207.50

PNL-PDOCA-V4R Passed EATON LV Panelboard 480 26.69 (*N1) 35.00 76.26

PNL-SL1-1EDA-V4R Passed GE LV Panelboard 208 3.19 10.00 31.91

SWGR-V4-LEFT Passed FPE LV Switchgear 480 29.91 30.00 99.71

SWGR-V4-RIGHT Passed FPE LV Switchgear 480 28.66 30.00 95.54

T2EC1-DSCT-V4R Passed EATON LV SWITCH 480 5.80 65.00 8.93

T2EC1-SEC-DSCT-V4R Passed EATON LV SWITCH 208 7.04 65.00 10.84

T2EC2-DSCT-V4R Passed EATON LV SWITCH 480 4.95 65.00 7.62

T2EC2-TX-SEC-DSCT-V4R Passed EATON LV SWITCH 208 3.80 65.00 5.85

T2G-DSCT-V4R Passed EATON LV SWITCH 480 19.10 65.00 29.38

(*N1) System X/R higher than Test X/R, Calc Isc (kA) modified based on low voltage factor.

H.H. McGuire VA Medical Center 2-16

Table 2.2 – Low-Voltage Equipment Evaluation (Hopkins – Utility contribution)

Bus I.D. Status Manufacturer Type Bus Voltage (V) Calc Isc (kA)

Equip Isc (kA) Rating %

ATS-CC-V4R Passed ASCO LV ATS 480 27.86 (*N1) 42.00 66.33

ATS-EC-V4R Passed ASCO LV ATS 480 27.86 (*N1) 42.00 66.33

ATS-ECP1-V4R Passed ASCO LV ATS 480 10.36 42.00 24.66

ATS-ECP2-V4R Passed ASCO LV ATS 480 10.36 42.00 24.66

ATS-EEG-V4R Passed ASCO LV ATS 480 10.44 42.00 24.85

ATS-SC-V4R Passed ASCO LV ATS 480 22.66 42.00 53.96

ECL-3A-1-DSCT-V4R Passed EATON LV SWITCH 480 13.24 200.00 6.62

ECL2GB-DSCT-V4R Passed EATON LV SWITCH 208 6.87 100.00 6.87

ECL2GC-DSCT-V4R Passed EATON LV SWITCH 208 6.79 100.00 6.79

ECL2GE-DSCT-V4R Passed EATON LV SWITCH 208 6.53 65.00 10.04

EE1-ATS-V4L Passed ASCO LV ATS 480 14.06 50.00 28.12

EE2-ATS-V4R Passed ASCO LV ATS 480 9.05 42.00 21.55

EE3-ATS-V4L Passed ASCO LV ATS 480 8.89 42.00 21.16

ELVTR-1-SW-V4L Passed LV SWITCH 480 4.23 200.00 2.12

ELVTR-2-SW-DSCT-V4L Passed LV SWITCH 480 8.90 200.00 4.45

ELVTR-2-SW-V4L Passed LV SWITCH 480 4.34 200.00 2.17

L1-PNL-V4L Passed GE LV PANELBOARD 208 2.26 (*N1) 10.00 22.64

L2-PNL-V4L Passed GE LV PANELBOARD 208 2.24 (*N1) 10.00 22.40

L2EA-SEC1-PNL-V4L Passed EATON LV PANELBOARD 208 7.34 22.00 33.37

L2EA-SEC2-PNL-V4L Passed EATON LV PANELBOARD 208 7.23 22.00 32.88

L2EB-PNL-V4L Passed EATON LV PANELBOARD 208 6.35 (*N1) 10.00 63.49

LD3A-1-PNL-V4L Passed EATON LV PANELBOARD 208 3.72 22.00 16.89

H.H. McGuire VA Medical Center 2-17

Bus I.D. Status Manufacturer Type Bus Voltage (V) Calc Isc (kA)

Equip Isc (kA) Rating %

P2EA-PNL-V4L Passed EATON LV PANELBOARD 480 15.47 35.00 44.21

P2GC-DSCT-V4R Passed EATON LV SWITCH 480 18.46 35.00 52.74

P2GF-DSCT-V4R Passed EATON LV SWITCH 480 5.02 65.00 7.72

PARKING-DSCNT-V4L Passed SQUARE D LV SWITCH 480 11.48 35.00 32.81

PNL LD1A-V4R Passed FPE LV Panelboard 208 3.98 25.00 15.94

PNL-1G-140-V4L Passed FPE LV Panelboard 480 12.48 65.00 19.20

PNL-1G-148-V4L Passed FPE LV Panelboard 480 12.48 14.00 89.13

PNL-1G-149-V4L Failed FPE LV Panelboard 480 *14.54 14.00 *103.89

PNL-1G-155-V4L Passed FPE LV Panelboard 480 16.51 65.00 25.40

PNL-1G-173-V4L Passed FPE LV Panelboard 480 12.48 65.00 19.20

PNL-1G-174-V4L Passed FPE LV Panelboard 480 9.86 14.00 70.42

PNL-1G-184-V4L Passed FPE LV Panelboard 480 9.86 65.00 15.17

PNL-ECL-3A-1-V4R Passed EATON LV PANELBOARD 208 5.67 22.00 25.77

PNL-ECL-3A-1A-V4R Passed SQUARE D LV PANELBOARD 208 3.93 10.00 39.32

PNL-ECL1A-V4R Passed FPE LV Panelboard 208 3.75 14.00 26.76

PNL-ECL1B-V4R Passed FPE LV Panelboard 208 3.31 14.00 23.66

PNL-ECL1C-V4R Passed FPE LV Panelboard 208 6.40 14.00 45.70

PNL-ECL1CA-V4R Passed SQUARE D LV Panelboard 208 7.83 (*N1) 10.00 78.35

PNL-ECL1D-V4R Passed FPE LV Panelboard 208 1.64 14.00 11.74

PNL-ECL1E-V4R Passed FPE LV Panelboard 208 3.51 14.00 25.08

PNL-ECL1W-V4R Passed FPE LV Panelboard 208 2.80 14.00 20.01

PNL-ECL2A-V4R Passed FPE LV Panelboard 208 3.55 14.00 25.35

PNL-ECL2G-V4R Passed FPE LV Panelboard 208 2.99 14.00 21.34

H.H. McGuire VA Medical Center 2-18

Isc (kA)

Equip Isc (kA) Rating %

PNL-ECL2GB-V4R Passed EATON LV PANELBOARD 208 5.45 22.00 24.79

PNL-ECL2GC-V4R Passed EATON LV PANELBOARD 208 5.41 22.00 24.59

PNL-ECL2GD-V4R Passed EATON LV PANELBOARD 208 3.38 22.00 15.34

PNL-ECL2GE-V4R Passed EATON LV PANELBOARD 208 4.42 22.00 20.10

PNL-ECL4G-V4R Passed FPE LV Panelboard 208 3.05 14.00 21.76

PNL-ECLCL-V4R Passed SQUARE D LV Panelboard 208 4.04 10.00 40.36

PNL-ECLDOC-V4R Passed FPE LV Panelboard 208 7.72 (*N1) 14.00 55.16

PNL-ECP1A-V4R Passed FPE LV Panelboard 480 8.03 14.00 57.33

PNL-ECP1B-V4R Passed FPE LV Panelboard 480 6.38 14.00 45.58

PNL-ECP1C-V4R Failed FPE LV Panelboard 480 *17.67 14.00 *126.22

PNL-ECP1D-V4R Passed FPE LV Panelboard 480 3.26 14.00 23.29

PNL-ECP1E-V4R Failed FPE LV Panelboard 480 *14.97 14.00 *106.94

PNL-ECP1W-V4R Passed FPE LV Panelboard 480 4.28 14.00 30.57

PNL-ECP2A-V4R Passed FPE LV Panelboard 480 7.25 14.00 51.77

PNL-ECP2B-V4R Passed FPE LV Panelboard 480 6.13 14.00 43.76

PNL-ECP3A-V4R Passed FPE LV Panelboard 480 6.91 14.00 49.38

PNL-ECPDOC-V4R Passed SQUARE D LV Panelboard 480 26.69 30.00 88.97

PNL-EEH1A-V4R Passed EATON LV PANELBOARD 480 6.43 35.00 18.36

PNL-EEH1A3-V4R Passed EATON LV PANELBOARD 480 5.13 35.00 14.65

PNL-EEH1B-V4L Passed EATON LV PANELBOARD 480 7.79 65.00 11.99

PNL-EEH1B3-V4L Passed EATON LV PANELBOARD 480 6.97 35.00 19.91

PNL-EEHGA-V4L Passed EATON LV PANELBOARD 480 8.53 35.00 24.37

PNL-EEL1A-V4R Passed FPE LV Panelboard 208 3.76 14.00 26.88

H.H. McGuire VA Medical Center 2-19

Isc (kA)

Equip Isc (kA) Rating %

PNL-EEL1B-V4R Passed SQUARE D LV Panelboard 208 9.08 (*N1) 10.00 90.83

PNL-EEL1C-V4R Passed EATON LV PANELBOARD 208 4.62 10.00 46.21

PNL-EEL1D-V4R Passed FPE LV Panelboard 208 1.91 14.00 13.68

PNL-EEL1E-V4R Passed FPE LV Panelboard 208 2.98 14.00 21.25

PNL-EEL1W-V4R Passed FPE LV Panelboard 208 2.80 14.00 19.98

PNL-EEL2A-V4R Passed FPE LV Panelboard 208 3.64 14.00 26.03

PNL-EEL2B-V4R Passed FPE LV Panelboard 208 7.61 14.00 54.33

PNL-EEL2BA-V4R Passed FPE LV Panelboard 208 7.18 14.00 51.26

PNL-EEL3A-V4R Passed FPE LV Panelboard 208 3.76 14.00 26.86

PNL-EEL3AA-V4R Passed FPE LV Panelboard 208 3.70 14.00 26.41

PNL-EEL3AB-V4R Passed FEDERAL PACIFIC LV PANELBOARD 208 1.34 14.00 9.58

PNL-EEL3AC-V4R Passed SQUARE D LV PANELBOARD 208 2.99 10.00 29.95

PNL-EEL5G-V4R Passed SQUARE D LV Panelboard 208 3.55 10.00 35.53

PNL-EELDOC-V4R Passed FPE LV Panelboard 208 9.86 (*N1) 14.00 70.43

PNL-EELGA-V4L Passed EATON LV PANELBOARD 208 1.68 22.00 7.62

PNL-EELOC-V4R Passed FPE LV Panelboard 208 9.01 14.00 64.36

PNL-EEP1A-V4R Passed FPE LV PANELBOARD 480 8.18 14.00 58.42

PNL-EEP1B-V4R Passed FPE LV Panelboard 480 7.21 14.00 51.47

PNL-EEP1C-V4R Failed FPE LV PANELBOARD 480 *20.39 14.00 *145.64

PNL-EEP1D-V4R Passed FPE LV PANELBOARD 480 2.33 14.00 16.65

PNL-EEP1E-V4R Passed FPE LV PANELBOARD 480 12.88 14.00 92.02

PNL-EEP1W-V4R Passed FPE LV PANELBOARD 480 4.66 14.00 33.29

PNL-EEP2A-V4R Passed FPE LV PANELBOARD 480 7.93 14.00 56.65

H.H. McGuire VA Medical Center 2-20

Isc (kA)

Equip Isc (kA) Rating %

PNL-EEP2B-V4R Passed FPE LV Panelboard 480 6.61 14.00 47.22

PNL-EEP3A-V4R Passed FPE LV PANELBOARD 480 7.49 14.00 53.52

PNL-EEPDOC-V4R Failed FPE LV PANELBOARD 480 *26.75 (*N1) 22.00 *121.59

PNL-EEPOC-V4R Passed FPE LV Panelboard 480 21.73 65.00 33.43

PNL-ESL-3A-1-V4R Passed EATON LV PANELBOARD 208 3.23 22.00 14.