Arc Flash Analysis Oct 2007.pdf

POWER SYSTEMS ENGINEERING

13515 Barrett Parkway Drive #170

Ballwin, MO 63021 Phone: 314-957-0212

SHORT-CIRCUIT ANALYSIS,

OVERCURRENT DEVICE COORDINATION ANALYSIS,

ARC FLASH HAZARD ANALYSIS

USDA CLF-2

AMES, IOWA

Prepared by C J Joshlin

Power Systems Engineer, Square D

SQUARE D Q2C #: 21612885-013

ISSUED: January 15, 2007 Revision 1: July 22, 2007

FILE: USDA CLF-2.doc

TABLE OF CONTENTS

The following power systems engineering report was prepared by Square D Engineering Services utilizing industry-accepted standards, practices, methodologies, and analysis tools. Inputs to the analysis include data obtained by Square D and provided by others, through onsite discovery activities, published information, equipment nameplates, manufacturer ratings, testing, analysis, or other means. The study is intended for use by qualified individuals to facilitate the installation, operation, maintenance, and safety of the electrical power system depicted. Modification of equipment, changes to system configuration, adjustment of trip-unit settings, or failure to properly maintain equipment may invalidate these results.

1 ABBREVIATIONS AND TRADEMARKS

2 EXECUTIVE SUMMARY

3 SHORT-CIRCUIT ANALYSIS

3.1 General Procedure

3.2 Data Used in the Calculations

3.2.1 Power Company Data

3.2.2 Cable Data

3.2.3 Transformer Data

3.2.4 Motor Contribution to Short-Circuit Current

3.3 Analysis of Results and Recommendations

3.4 Short-Circuit Comparison Tables

4 OVERCURRENT DEVICE COORDINATION ANALYSIS

4.1 General Procedure

4.2 Specific Procedure

4.2.1 Short-Circuit Current Considerations

4.2.2 Molded Case Breaker Coordination

4.2.3 Fuse Coordination

4.2.4 Low-Voltage Ground Fault Relay Settings

4.2.5 Transformer Protective Devices

4.2.6 Cable Protection

4.3 Analysis of Results and Recommendations

4.4 Overcurrent Device Setting Tables

4.5 Time-Current Coordination Graphs

5 ARC FLASH HAZARD ANALYSIS

5.1 General Procedure

5.2 Specific Procedure

5.3 Analysis of Results

5.4 Table Headings Guide – Summary Tables

5.5 Arc Flash Hazard Analysis – Summary Tables

July 2007

APPENDICES

APPENDIX A: COMPUTER INPUT TABULATIONS

APPENDIX B: COMPUTER OUTPUT TABULATIONS

APPENDIX C: REFERENCES

APPENDIX D: SYSTEM ONE-LINE DIAGRAMS

July 2007

1 ABBREVIATIONS AND TRADEMARKS

Organizations and Standards ANSI - American National Standards Institute IEEE - Institute of Electrical and Electronics Engineers IPCEA - Insulated Power Cable Engineers Association NEC - National Electrical Code (NFPA No. 70) NEMA - National Electrical Manufacturers Association UL - Underwriters' Laboratories, Inc.

Other Abbreviations A - Amperes (RMS symmetrical) AFIE - Arc Flash Incident Energy (cal/cm2) AIC - Amperes Interrupting Capacity (Three-Phase RMS sym.)

ASD - Adjustable Speed ac Drive ATPV - Protective Clothing Arc Rating ATS - Automatic Transfer Switch C/B - Circuit Breaker CHP - Combined Horsepower CFLA - Combined Full Load Amperes CT - Current Transformer FLA - Full Load Amperes FPB - Flash Protection Boundary HP - Horsepower IL - Max. Demand Load Current at PCC ISC - Short-Circuit Current at PCC kVA - Kilovolt-Ampere kVAm - Kilovolt-Amperes of Motor Short Circuit contribution kW - Kilowatt L-L - Line-To-Line LRA - Locked-Rotor Amperes L.V. - Low Voltage MCC - Motor Control Center MCS - Molded Case Switch mohms - Milliohms M.V. - Medium Voltage O.L. - Overload PCC - Point of Common Coupling PF - Power Factor PPE - Personal Protective Equipment PWM - Pulse Width Modulated R - Resistance RMS - Root-Mean-Square SCA - Short-Circuit Amperes SCAm - Short-Circuit Amperes of Motor Contribution S.F. - Service Factor sym. - Symmetrical TCR - Trip Current Rating TDD - Total Demand Distortion THD - Total Harmonic Distortion V - Line-To-Line Volts (RMS sym.)

WCR - Withstand Current Rating X - Reactance Z - Impedance %Z - Percent Impedance

Trademarks BOLT-LOC, ECONOPAK, EZ METER-PAK, GROUND CENSOR, I-LIMITER, I-LINE, ISO-FLEX, MAG-GARD, MICROLOGIC, MINI POWER-ZONE, OMEGAPAK, POWER-CAST, POWER STYLE, POWER ZONE, QF, QO, QWIK-GARD, SORGEL, SPEED-D, SQUARE D, VACARC and WATCHDOG are registered trademarks of Square D Company. I-75,000, METER-PAK, and PZ-8 are trademarks of Square D Company.

July 2007 1 of 718

2 EXECUTIVE SUMMARY

This report documents the results of a Square D Power Systems analysis for the USDA CLF-2 in AMES, IOWA. All studies were performed using the Power*Tools for Windows Software published by SKM Systems Analysis of Manhattan Beach, CA, version 6.0.2.8.

Data was obtained from the sources listed in the "REFERENCES" section at the end of the report.

The system short-circuit analysis evaluates the adequacy of new Square D electrical equipment shown on the enclosed one-line diagrams to withstand or to interrupt the calculated maximum available short-circuit current at its location.

This report supersedes the results from any other previous Square D study.

The results of the short-circuit analysis show that all of the equipment considered in the study is adequately rated for the projected fault current levels. For further discussion regarding these results, please refer to the Short Circuit Analysis of Results and Recommendations.

The overcurrent device time-current coordination analysis determines the suggested settings and, where appropriate, the ampere ratings and types for the electrical power system protective devices to achieve the desired system protection and electrical service continuity goals.

The coordination study showed that for the most part, a high degree of selectivity was achieved among devices in the system with a few exceptions. Recommended setting levels are provided in the Overcurrent Device Setting Tables. The breakers in the system should be set to the recommended levels.

However, there is a large cause for concern with the relay feeding this system and the downstream devices. The SR735 relay feeding this system overlaps the 150E fuses and main breakers of the gears downstream of the transformers. This is a large issue as the opening of the relay before the fuse or mains would remove 3 substations from service. The danger of this is that while any faults downstream of the feeder breakers in the 480v panels should be handled by the feeder breakers, any faults between the fuses and the busses of the 3000A gear might trip these relays and remove the whole system from service. While RMF Engineering provided these settings, it is highly recommended that the relay settings be revaluated with the upstream device to determine if the settings on the SR735 relays can be increased to remove this overlap. For further discussion regarding these results, please refer to the Time Current Coordination Analysis of Results and Recommendations.

The flash hazard analysis establishes the flash protection boundary around electrical equipment within which a worker exposed to an arcing fault would expect to receive 2nd degree burns if not adequately protected. The analysis also determines the incident energy levels at specific working distances from equipment, which can be used to select appropriate personal protective equipment (PPE) to be worn when working within the flash protection boundary.

Since it has been assumed that the tie breakers have no interlocking kirk key with the mains, it is technically possible for the system to be running both with the tie breaker open or closed. An arc flash assessment was conducted on both configurations to provide the most conservative results.

Section 5.5 contains a summary table, before the detailed arc flash results tables, detailing the locations that the two different system configurations yield different results.

The results of the arc flash analysis show both the calculated arc flash incident energy (AFIE) and flash protection boundary distances at each bus under study. Note that in some locations, more

July 2007 2 of 718 than one value for AFIE levels and/or the flash protection boundary are given (e.g., one for the main section and one for the feeder sections of a switchgear lineup) to reflect different zones of protection for a given piece of equipment. Equipment warning labels or safety programs should take these variations in energy levels and flash protection boundaries into account.

For buses that represent low-voltage switchboards or panelboards, the values shown in the Arc Flash Hazard Analysis – Summary Tables assume that the fault is cleared by the upstream protective device, even if the equipment contains a main overcurrent protective device. This assumption is intended to produce conservative results and therefore cover the case where faults originating in such equipment may propagate to the line side of the local main. See the Arc Flash General Procedure and Arc Flash Specific Procedure for additional details regarding the analysis procedure.

Note that the arc flash hazard analysis and recommended PPE levels are no substitutes for safe work practices. As stated in 130.7(C)(10), FPN 2 of NFPA 70E-2004, burn injuries can occur even when adequate PPE is employed, and the recommended PPE may provide little or no protection against arc blast and its effects. Protection from arc flash can best be provided by working only on circuits or equipment that have been placed in an electrically safe work condition.

July 2007 3 of 718

3 SHORT-CIRCUIT ANALYSIS

3.1 General Procedure

An electrical system short-circuit analysis is used for the following:

1) To compare the calculated maximum fault current with the interrupting ratings of overcurrent protective devices such as fuses and circuit breakers.

2) To investigate applicable short-circuit series ratings and the protection of electrical equipment by current-limiting devices.

3) To verify the adequacy of other equipment (such as transformers, switches, equipment bussing) to withstand the effects of the calculated maximum fault current levels.

4) To assist in the selection and/or determination of settings for relays, fuses and circuit breakers.

5) To provide input (along with device trip characteristics) to an arc-flash hazard analysis.

This analysis was made utilizing SKM Power Tools software. The software was programmed to calculate the maximum available three-phase, RMS symmetrical, short-circuit amperes at each piece of equipment in the system. The calculation procedures are based on recommendations included in ANSI/IEEE standards C37.13, C37.010, and C37.5.

The AFAULT module of the Power*Tools software simulates a bolted three-phase fault at each point of consideration in the system and calculates the maximum available short-circuit current at that point without any reduction due to current-limiting overcurrent devices which may be present.

(However, the effects of current-limiting devices are considered when determining the adequacy of the equipment.) The calculated short-circuit values are RMS symmetrical amperes and are comparable with the RMS symmetrical short-circuit ratings of electrical equipment.

Electrical distribution equipment must be able to withstand and/or interrupt the most severe fault duty that it may be subjected to at its location in the system. In particular, NEC Section 110.9 requires circuit breakers to have a rating sufficient for interrupting the maximum available fault current present at their line side terminals. For locations where calculated fault currents exceed the ratings of the equipment, recommendations for corrective actions are provided.

Equipment short-circuit withstand and interrupting ratings are expressed in symmetrical RMS current. However, fault currents are not purely symmetrical in practice, as system inductance introduces a degree of asymmetry for at least the first few cycles of a fault. The magnitude and duration of this asymmetrical component depends on several factors, including characteristics of system components (conductors, transformers, and loads) and the exact point on the current waveform that the fault begins—the level of asymmetry even differs from phase to phase in a three-phase system. Because of the uncertainty in asymmetry for a given fault event, the capability of devices to interrupt asymmetrical fault current is based on the maximum possible asymmetrical fault current level at the point of application. The more inductive the circuit, as measured by the calculated system X/R ratio, the more asymmetrical the fault current can be. If the calculated X/R level exceeds a certain level, then the increased asymmetrical duty must be taken into account when breaker ratings are assessed.

July 2007 4 of 718

Low-voltage circuit breakers and fuses are tested to establish their interrupting ratings based on a circuit with a fixed X/R ratio, as defined in the various product standards (UL and ANSI). For example, an ANSI low-voltage power circuit breaker is tested in a circuit with an X/R ratio of 6.6.

If such a breaker is applied at a system bus with a calculated X/R ratio of 6.6 or less and the calculated RMS symmetrical fault current is within the symmetrical interrupting rating of the breaker, then it is assumed that the breaker is also able to interrupt and withstand the asymmetrical current resulting from a fault at that location. If a low voltage breaker is applied at a location with an X/R ratio greater than that of the design test circuit, the calculated fault current must be multiplied by an adjustment factor that accounts for this. This resultant “fault duty,” which is greater than the calculated fault current, is then compared to the breaker’s interrupting rating in order to determine if the breaker is adequately rated. Different classes of low-voltage breakers have different test X/R values, and each type has its own set of multiplication factors. Design test circuit power factors and associated X/R ratios are as shown in the Table below. The SKM low-voltage short-circuit output report shows the calculated fault duty levels calculated at each bus, and when these values differ from the calculated short-circuit current levels, they are used in the device comparison tables. See IEEE 1015-1997, IEEE Recommended Practice for Applying Low- Voltage Circuit Breakers Used in Industrial and Commercial Power Systems, for additional details.

Device pf X/R Ratio

Power circuit breaker, unfused 0.15 6.591 Power circuit breaker, fused 0.20 4.899

Molded case breaker, interrupting rating greater than 20000 A 0.15-0.20 6.591-4.899

Molded case breaker, interrupting rating 10001 to 20000 A 0.25-0.30 3.9-3.18

Molded case breaker, interrupting rating 10000 A and less 0.45-0.50 2.0-1.732

Table: Summary of Test Power Factor and X/R Values for LV Devices.

For power circuit breakers, the power factors are taken from ANSI/IEEE C37.13. For molded case breakers, the power factors are taken from NEMA standard AB1. Since the NEMA standard specifies a range of test circuit power factors, the highest value (lowest X/R ratio) is used to determine the multiplying factor. This produces the most conservative (largest) factor.

For medium-voltage and high-voltage breakers rated on a symmetrical current basis, the effects of system X/R and asymmetrical current are handled similarly. For the breakers’ interrupting ratings, the multiplying factors are not listed in a table but instead are derived from graphs shown in ANSI C37.010-1999, IEEE Application Guide for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis. The SKM software calculates and applies these multiplying factors automatically when the system X/R value exceeds 15 for 2, 3 and 5-cycle breakers, or 10 for 8-cycle breakers. The breaker momentary fault current, though calculated in the first cycle after the fault when the fault current is typically highly asymmetrical, is also expressed in RMS symmetrical amperes. Based on this, the SKM software calculates the momentary duty based on both RMS amperes and amperes crest, so that the calculated duties can be compared to breakers with either type of momentary rating.

July 2007 5 of 718

The computer program was also used to calculate single line-to-ground fault currents. Actual distribution system zero sequence impedance (Z0) values are difficult to calculate. The zero sequence impedances utilized by the computer program are based on simple, conservative linear relationships with the corresponding positive sequence impedances (Z1). Conservative assumptions such as these can yield fault current values which approach, or exceed (generally at the secondary terminals of solidly grounded transformers), the three-phase fault values on a solidly grounded system. Due to the uncertainty in actual Z0 values, the calculated single line-to-ground fault currents are not used to evaluate device interrupting capacities or equipment protection;

rather the results reported in this analysis are based on calculation of three-phase bolted fault currents at the buses under study.

July 2007 6 of 718

3.2 Data Used in the Calculations

3.2.1 Power Company Data

The maximum available three-phase short-circuit current at both service points 000 UTILITY A and 000 UTILITY B are 12,747A at 13,200V with a X/R ratio of 6.66 and a single line to ground short-circuit current at the service point is 12,663A at 13,200V with a X/R ratio of 6.75.

This short-circuit current was obtained from the customer and determined the starting point for the short-circuit analysis.

3.2.2 Cable Data

The "FEEDER INPUT DATA" computer printouts list the cable data used for each circuit segment. Included are cable lengths, number per phase, size, conductor material, cable insulation type, conduit material and resistance and reactance values. Also, circuit segment cable lengths, number per phase, and size and conductor material are recorded on the one-line diagrams.

3.2.3 Transformer Data

Square D transformer percent impedance and X/R ratio values were used for all transformers. The exact R and X component values used are shown on the "TRANSFORMER INPUT DATA" printouts.

3.2.4 Motor Contribution To Short-Circuit Current

Motor contribution to the short-circuit current is taken into account in this short-circuit analysis.

During the first few cycles of a fault, all running motors act as generators and produce a current which will combine with the Power Company short-circuit current flowing to the fault. All connected motors shown on the study one-line were assumed to be running at the time of the fault.

For calculation of low-voltage fault duty, the contribution from all induction motors and synchronous motors in the system are considered. Motors fed by adjustable-speed drives are also not considered, since they generally do not contribute to fault current. For motors fed by drives equipped with bypass contactors, though, it was assumed that the bypass path was used so that the motors would contribute to system fault currents.

The motor short-circuit contribution is determined and included in the computer short-circuit analysis so that the results should represent the highest short-circuit current to which the equipment might be subjected. The modeled values used appear on the "CONTRIBUTION DATA" and the "FAULT REPORT" computer printouts.

July 2007 7 of 718

3.3 Analysis of Results and Recommendations

After making the calculations, the Square D distribution equipment was checked to determine its adequacy to interrupt or withstand the effects of the calculated maximum short-circuit current at its location. The results are listed in the "SHORT-CIRCUIT COMPARISON TABLE".

Listed in the tables are the calculated short-circuit currents at each piece of equipment and the ratings of the lowest rated device in the equipment enclosure. Though not shown in the table, the momentary short-circuit duty for medium-voltage equipment was also evaluated vs. the corresponding equipment ratings. For equipment shown as “adequate”, both the momentary and interrupting ratings were found to be adequate. Comparing the two sets of values shows that all of the equipment examined IS adequate by itself.

• Please refer to the Short-Circuit Comparison Table regarding actual findings on inadequate equipment.

The printouts in Appendices A and B show the complete input data and short-circuit output data from SKM’s Power*Tools software.

Some assumptions were necessary for the completion of this study. The assumptions made were:

• All 4 UPSs were considered to be in bypass mode for the purposes of this study.

• No Motor loads other than those specified on the schedules on construction drawings E8.08 & E8.0.9 were considered.

• For the purpose of the short circuit study, all tie breakers are considered to be closed to provide the most conservative results for the study.

July 2007 8 of 718

3.4 Short-Circuit Comparison Tables

July 2007 9 of 718

POWER SYSTEMS ENGINEERING SHORT-CIRCUIT USDA CLF-2

SAINT LOUIS, MISSOURI COMPARISON TABLE Ames, Iowa

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

000 UTIL1 13200 ----- #N/A 14,731 6.40 #N/A

000 UTIL2 13200 ----- #N/A 14,731 6.40 #N/A

001 15KVA BUSA 13200 EQUIPMENT RATING 38,000 12,953 5.19 Adequate

002 T2B PRI 13200 TRANSFORMER #N/A 12,874 5.09 #N/A

003 T1B PRI 13200 TRANSFORMER #N/A 12,846 5.05 #N/A

004 T3B PRI 13200 TRANSFORMER #N/A 12,822 5.03 #N/A

005 15KVA BUSB 13200 EQUIPMENT RATING 38,000 12,945 5.18 Adequate

006 T3A PRI 13200 TRANSFORMER #N/A 12,800 5.00 #N/A

007 T1A PRI 13200 TRANSFORMER #N/A 12,824 5.03 #N/A

008 T2A PRI 13200 TRANSFORMER #N/A 12,853 5.06 #N/A

100 T1A SEC 480 TRANSFORMER #N/A 66,776 4.65 #N/A

101 SB1A FDR 480 EQUIPMENT RATING 100,000 66,104 4.44 Adequate

102 SB1A BUS 480 NW-H 100,000 66,102 4.44 Adequate

103 D4L3C1 BUS 480 EQUIPMENT RATING 35,000 22,553 2.30 Adequate

104 T8 PRI 480 TRANSFORMER #N/A 19,903 2.19 #N/A

105 T8 SEC 208 TRANSFORMER #N/A 10,874 3.31 #N/A

106 D2L3C1 FDR 208 EQUIPMENT RATING 22,000 10,618 3.24 Adequate

107 D2L3C1 BUS 208 FA(3P) 25,000 10,617 3.24 Adequate

108 X2L3C1 BUS 208 EQUIPMENT RATING 22,000 6,095 1.15 Adequate

109 X2L3C2 BUS 208 EQUIPMENT RATING 10,000 5,730 1.08 Adequate

110 X2L3C3 BUS 208 EQUIPMENT RATING 10,000 4,485 0.89 Adequate

111 X2L3C4 BUS 208 EQUIPMENT RATING 10,000 4,716 0.92 Adequate

112 X2L3C5 BUS 208 EQUIPMENT RATING 10,000 5,107 0.98 Adequate

113 X2L3C6 BUS 208 EQUIPMENT RATING 10,000 4,274 0.86 Adequate

#N/A = Number not available. SCCT Page 1 of 2110 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

114 X2L3C7 BUS 208 EQUIPMENT RATING 10,000 4,082 0.84 Adequate

115 X2L3C8 BUS 208 EQUIPMENT RATING 10,000 5,250 1.00 Adequate

116 X2L3C9 BUS 208 EQUIPMENT RATING 10,000 5,561 1.05 Adequate

117 X2L3C10 BS 208 EQUIPMENT RATING 10,000 4,716 0.92 Adequate

118 L4L3C1 BUS 480 EQUIPMENT RATING 35,000 21,916 2.20 Adequate

119 T5K PRI 480 TRANSFORMER #N/A 19,208 1.65 #N/A

120 T5K SEC 208 TRANSFORMER #N/A 4,375 2.92 #N/A

121 R2L3C1 FDR 208 EQUIPMENT RATING 10,000 4,302 2.75 Adequate

122 R2L3C1 BUS 208 QOB 10,000 4,878 2.75 Adequate

123 L4LPC1 BUS 480 EQUIPMENT RATING 18,000 9,807 0.85 Adequate

124 D4L2C1 BUS 480 EQUIPMENT RATING 35,000 23,564 2.32 Adequate

125 T8 PRI 480 TRANSFORMER #N/A 20,687 2.21 #N/A

126 T8 SEC 208 TRANSFORMER #N/A 10,970 3.34 #N/A

127 D2L2C1 FDR 208 EQUIPMENT RATING 22,000 10,711 3.26 Adequate

128 D2L2C1 BUS 208 FA(3P) 25,000 10,709 3.26 Adequate

129 X2L2C1 BUS 208 EQUIPMENT RATING 22,000 6,326 1.18 Adequate

130 X2L2C2 BUS 208 EQUIPMENT RATING 10,000 5,586 1.05 Adequate

131 X2L2C3 BUS 208 EQUIPMENT RATING 10,000 4,858 0.94 Adequate

132 X2L2C4 BUS 208 EQUIPMENT RATING 10,000 4,392 0.88 Adequate

134 X2L2C6 BUS 208 EQUIPMENT RATING 10,000 5,936 1.11 Adequate

135 X2L2C7 BUS 208 EQUIPMENT RATING 10,000 5,127 0.98 Adequate

136 X2L2C8 BUS 208 EQUIPMENT RATING 10,000 4,733 0.92 Adequate

137 X2L2C9 BUS 208 EQUIPMENT RATING 10,000 4,190 0.85 Adequate

138 X2L2C10 BS 208 EQUIPMENT RATING 10,000 3,834 0.80 Adequate

#N/A = Number not available. SCCT Page 2 of 2111 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

139 L4L2C1 BUS 480 EQUIPMENT RATING 35,000 22,871 2.22 Adequate

140 T5K PRI 480 TRANSFORMER #N/A 19,156 1.55 #N/A

141 T5K SEC 208 TRANSFORMER #N/A 4,377 2.89 #N/A

142 R2L2C1 FDR 208 EQUIPMENT RATING 10,000 4,304 2.73 Adequate

143 R2L2C1 BUS 208 QOB 10,000 4,870 2.73 Adequate

144 D4L1C1 BUS 480 EQUIPMENT RATING 35,000 24,668 2.36 Adequate

145 T8 PRI 480 TRANSFORMER #N/A 21,536 2.23 #N/A

146 T8 SEC 208 TRANSFORMER #N/A 11,069 3.36 #N/A

147 D2L1C1 FDR 208 EQUIPMENT RATING 22,000 10,804 3.28 Adequate

148 D2L1C1 BUS 208 FA(3P) 25,000 10,803 3.28 Adequate

149 X2L1C1 BUS 208 EQUIPMENT RATING 22,000 6,359 1.18 Adequate

150 X2L1C2 BUS 208 EQUIPMENT RATING 10,000 5,612 1.05 Adequate

151 X2L1C3 BUS 208 EQUIPMENT RATING 10,000 4,877 0.94 Adequate

152 X2L1C4 BUS 208 EQUIPMENT RATING 10,000 4,407 0.87 Adequate

153 X2L1C5 BUS 208 EQUIPMENT RATING 10,000 4,017 0.82 Adequate

154 X2L1C6 BUS 208 EQUIPMENT RATING 10,000 5,964 1.11 Adequate

155 X2L1C7 BUS 208 EQUIPMENT RATING 10,000 5,148 0.98 Adequate

156 X2L1C8 BUS 208 EQUIPMENT RATING 10,000 4,751 0.92 Adequate

157 X2L1C9 BUS 208 EQUIPMENT RATING 10,000 4,203 0.85 Adequate

158 X2L1C10 BS 208 EQUIPMENT RATING 10,000 3,845 0.80 Adequate

159 X2L1C11 BS 208 EQUIPMENT RATING 10,000 5,009 0.96 Adequate

160 X2L1C12 BS 208 EQUIPMENT RATING 10,000 3,929 0.81 Adequate

170 L4L1C1 BUS 480 EQUIPMENT RATING 35,000 23,912 2.25 Adequate

171 T5K PRI 480 TRANSFORMER #N/A 19,882 1.54 #N/A

#N/A = Number not available. SCCT Page 3 of 2112 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

172 T5K SEC 208 TRANSFORMER #N/A 4,393 2.90 #N/A

173 R2L1C1 FDR 208 EQUIPMENT RATING 10,000 4,319 2.73 Adequate

174 R2L1C1 BUS 208 QOB 10,000 4,887 2.73 Adequate

175 R2L1C1A BS 208 EQUIPMENT RATING 10,000 3,835 1.94 Adequate

176 D4LBC1 BUS 480 EQUIPMENT RATING 35,000 24,961 2.36 Adequate

177 T8 PRI 480 TRANSFORMER #N/A 21,759 2.23 #N/A

178 T8 SEC 208 TRANSFORMER #N/A 11,093 3.37 #N/A

179 D2LBC1 FDR 208 EQUIPMENT RATING 22,000 10,828 3.29 Adequate

180 D2LBC1 BUS 208 FA(3P) 25,000 10,826 3.28 Adequate

181 X2LBC1 BUS 208 EQUIPMENT RATING 22,000 10,398 2.81 Adequate

182 X2LBC2 BUS 208 EQUIPMENT RATING 22,000 9,983 2.47 Adequate

183 X2LBC3 BUS 208 EQUIPMENT RATING 22,000 9,585 2.22 Adequate

184 X2LBC4 BUS 208 EQUIPMENT RATING 10,000 9,204 2.02 Adequate

185 X2LBC5 BUS 208 EQUIPMENT RATING 10,000 8,843 1.86 Adequate

186 X2LBC6 BUS 208 EQUIPMENT RATING 10,000 8,843 1.86 Adequate

187 X2LBC7 BUS 208 EQUIPMENT RATING 10,000 8,500 1.73 Adequate

188 L4LBC1 BUS 480 EQUIPMENT RATING 35,000 19,262 1.45 Adequate

189 T6K PRI 480 TRANSFORMER #N/A 21,767 1.90 #N/A

190 T6K SEC 208 TRANSFORMER #N/A 8,646 3.01 #N/A

191 D2LBC2 DIS 208 ----- #N/A 8,450 2.89 #N/A

192 D2LBC2 FDR 208 EQUIPMENT RATING 10,000 6,123 1.92 Adequate

193 D2LBC2 BUS 208 QB 10,000 6,290 1.92 Adequate

194 R2LBC1 BUS 208 EQUIPMENT RATING 10,000 5,978 1.84 Adequate

195 R2LBC2 BUS 208 EQUIPMENT RATING 10,000 5,838 1.78 Adequate

#N/A = Number not available. SCCT Page 4 of 2113 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

196 R2LBC3 BUS 208 EQUIPMENT RATING 10,000 5,704 1.72 Adequate

197 T5K PRI 480 TRANSFORMER #N/A 4,645 1.05 #N/A

198 T5K SEC 208 TRANSFORMER #N/A 3,410 2.09 #N/A

199 RP2 FDR 208 EQUIPMENT RATING 9,585 3,335 1.99 Adequate

200 RP2 BUS 208 QOB 10,000 3,459 1.99 Adequate

201 D4L3A1 BUS 480 EQUIPMENT RATING 65,000 32,102 2.07 Adequate

202 T8 PRI 480 TRANSFORMER #N/A 26,966 1.98 #N/A

203 T8 SEC 208 TRANSFORMER #N/A 11,599 3.33 #N/A

204 D2L3A1 FDR 208 EQUIPMENT RATING 22,000 11,309 3.25 Adequate

205 D2L3A1 BUS 208 FA(3P) 25,000 11,307 3.25 Adequate

206 X2L3A1 BUS 208 EQUIPMENT RATING 10,000 5,395 0.98 Adequate

207 X2L3A2 BUS 208 EQUIPMENT RATING 10,000 4,961 0.92 Adequate

208 X2L3A3 BUS 208 EQUIPMENT RATING 10,000 4,474 0.85 Adequate

209 X2L3A4 BUS 208 EQUIPMENT RATING 10,000 4,071 0.81 Adequate

210 X2L3A5 BUS 208 EQUIPMENT RATING 10,000 3,655 0.76 Adequate

211 X2L3A6 BUS 208 EQUIPMENT RATING 10,000 5,395 0.98 Adequate

212 X2L3A7 BUS 208 EQUIPMENT RATING 10,000 4,961 0.92 Adequate

213 X2L3A8 BUS 208 EQUIPMENT RATING 10,000 4,474 0.85 Adequate

214 X2L3A9 BUS 208 EQUIPMENT RATING 10,000 4,071 0.81 Adequate

215 X2L3A10 BS 208 EQUIPMENT RATING 10,000 3,732 0.77 Adequate

216 L4L3A1 BUS 480 EQUIPMENT RATING 35,000 25,508 1.63 Adequate

217 T5K PRI 480 TRANSFORMER #N/A 22,941 1.24 #N/A

218 T5K SEC 208 TRANSFORMER #N/A 4,459 2.85 #N/A

219 R2L3A1 FDR 208 EQUIPMENT RATING 10,000 4,383 2.69 Adequate

#N/A = Number not available. SCCT Page 5 of 2114 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

220 R2L3A1 BUS 208 QOB 10,000 4,940 2.69 Adequate

221 L4LPA1 BUS 480 EQUIPMENT RATING 14,000 9,929 0.69 Adequate

223 D4L2A1 BUS 480 EQUIPMENT RATING 65,000 34,524 2.16 Adequate

224 T8 PRI 480 TRANSFORMER #N/A 28,662 2.04 #N/A

226 D2L2A1 FDR 208 EQUIPMENT RATING 22,000 11,426 3.30 Adequate

227 D2L2A1 BUS 208 FA(3P) 25,000 11,424 3.30 Adequate

228 X2L2A1 BUS 208 EQUIPMENT RATING 10,000 6,133 1.08 Adequate

229 X2L2A2 BUS 208 EQUIPMENT RATING 10,000 5,424 0.98 Adequate

230 X2L2A3 BUS 208 EQUIPMENT RATING 10,000 4,852 0.90 Adequate

231 X2L2A4 BUS 208 EQUIPMENT RATING 10,000 4,280 0.83 Adequate

232 X2L2A5 BUS 208 EQUIPMENT RATING 10,000 3,995 0.79 Adequate

233 X2L2A6 BUS 208 EQUIPMENT RATING 10,000 6,553 1.15 Adequate

234 X2L2A7 BUS 208 EQUIPMENT RATING 10,000 5,758 1.02 Adequate

235 X2L2A8 BUS 208 EQUIPMENT RATING 10,000 5,123 0.93 Adequate

236 X2L2A9 BUS 208 EQUIPMENT RATING 10,000 4,493 0.85 Adequate

237 X2L2A10 BS 208 EQUIPMENT RATING 10,000 4,181 0.82 Adequate

238 L4L2A1 BUS 480 EQUIPMENT RATING 35,000 33,034 2.04 Adequate

239 T5K PRI 480 TRANSFORMER #N/A 30,441 1.68 #N/A

240 T5K SEC 208 TRANSFORMER #N/A 4,536 3.00 #N/A

241 R2L2A1 FDR 208 EQUIPMENT RATING 10,000 4,458 2.82 Adequate

242 R2L2A1 BUS 208 QOB 10,000 5,091 2.82 Adequate

243 D4L1A1 BUS 480 EQUIPMENT RATING 65,000 37,330 2.26 Adequate

244 T8 PRI 480 TRANSFORMER #N/A 30,580 2.11 #N/A

245 T8 SEC 208 TRANSFORMER #N/A 11,847 3.44 #N/A

#N/A = Number not available. SCCT Page 6 of 2115 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

246 D2L1A1 FDR 208 EQUIPMENT RATING 22,000 11,546 3.34 Adequate

247 D2L1A1 BUS 208 FA(3P) 25,000 11,544 3.34 Adequate

248 X2L1A1 BUS 208 EQUIPMENT RATING 10,000 6,169 1.08 Adequate

249 X2L1A2 BUS 208 EQUIPMENT RATING 10,000 5,452 0.97 Adequate

250 X2L1A3 BUS 208 EQUIPMENT RATING 10,000 4,875 0.90 Adequate

251 X2L1A4 BUS 208 EQUIPMENT RATING 10,000 4,298 0.83 Adequate

252 X2L1A5 BUS 208 EQUIPMENT RATING 10,000 4,010 0.79 Adequate

253 X2L1A6 BUS 208 EQUIPMENT RATING 10,000 6,595 1.15 Adequate

254 X2L1A7 BUS 208 EQUIPMENT RATING 10,000 5,790 1.02 Adequate

255 X2L1A8 BUS 208 EQUIPMENT RATING 10,000 5,148 0.93 Adequate

256 X2L1A9 BUS 208 EQUIPMENT RATING 10,000 4,512 0.85 Adequate

257 X2L1A10 BS 208 EQUIPMENT RATING 10,000 4,198 0.81 Adequate

258 L4L1A1 BUS 480 EQUIPMENT RATING 65,000 35,608 2.12 Adequate

259 T5K PRI 480 TRANSFORMER #N/A 25,563 1.23 #N/A

260 T5K SEC 208 TRANSFORMER #N/A 4,496 2.87 #N/A

261 R2L1A1 FDR 208 EQUIPMENT RATING 10,000 4,418 2.71 Adequate

262 R2L1A1 BUS 208 QOB 10,000 4,990 2.71 Adequate

263 D4LBA1 BUS 480 EQUIPMENT RATING 65,000 50,617 3.36 Adequate

264 T8 PRI 480 TRANSFORMER #N/A 39,138 2.72 #N/A

265 T8 SEC 208 TRANSFORMER #N/A 12,274 3.68 #N/A

267 D2LBA1 BUS 208 EQUIPMENT RATING 22,000 11,950 3.57 Adequate

268 X2LBA1 BUS 208 EQUIPMENT RATING 22,000 11,441 2.97 Adequate

269 X2LBA2 BUS 208 EQUIPMENT RATING 22,000 10,948 2.56 Adequate

270 X2LBA3 BUS 208 EQUIPMENT RATING 22,000 10,475 2.26 Adequate

#N/A = Number not available. SCCT Page 7 of 2116 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

271 X2LBA4 BUS 208 EQUIPMENT RATING 10,000 8,817 1.61 Adequate

272 X2LBA5 BUS 208 EQUIPMENT RATING 10,000 8,461 1.51 Adequate

273 X2LBA6 BUS 208 EQUIPMENT RATING 10,000 8,127 1.43 Adequate

274 X2LBA7 BUS 208 EQUIPMENT RATING 10,000 7,814 1.36 Adequate

275 L4LBA1 BUS 480 EQUIPMENT RATING 65,000 46,648 2.50 Adequate

276 T6K PRI 480 TRANSFORMER #N/A 44,459 2.44 #N/A

277 T6K SEC 208 TRANSFORMER #N/A 9,479 3.30 #N/A

278 D2LBA2 FDR 208 EQUIPMENT RATING 10,000 9,248 3.13 Adequate

279 D2LBA2 BUS 208 FY(1P) 14,000 9,246 3.13 Adequate

280 R2LBA1 BUS 208 EQUIPMENT RATING 10,000 8,960 2.84 Adequate

281 R2LBA2 BUS 208 EQUIPMENT RATING 10,000 8,683 2.60 Adequate

282 R2LBA3 BUS 208 EQUIPMENT RATING 10,000 8,416 2.40 Adequate

283 T5 PRI 480 TRANSFORMER #N/A 4,524 0.86 #N/A

284 T5 SEC 208 TRANSFORMER #N/A 4,157 1.76 #N/A

285 RP1 FDR 208 EQUIPMENT RATING 10,000 3,951 1.68 Adequate

286 RP1 BUS 208 QOB 10,000 3,951 1.68 Adequate

287 RP1A BUS 208 EQUIPMENT RATING 10,000 2,833 1.11 Adequate

289 D4A3A1 BUS 480 EQUIPMENT RATING 35,000 24,036 1.82 Adequate

290 L4A3A1 BUS 480 EQUIPMENT RATING 35,000 16,101 1.04 Adequate

291 T6K PRI 480 TRANSFORMER #N/A 20,922 1.56 #N/A

292 T6K SEC 208 TRANSFORMER #N/A 8,614 2.86 #N/A

293 D2A3A1 FDR 208 EQUIPMENT RATING 10,000 8,417 2.75 Adequate

294 D2A3A1 BUS 208 FA(3P) 25,000 8,415 2.75 Adequate

295 R2A3A1 BUS 208 EQUIPMENT RATING 10,000 6,945 1.67 Adequate

#N/A = Number not available. SCCT Page 8 of 2117 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

296 R2A3A2 BUS 208 EQUIPMENT RATING 10,000 6,689 1.56 Adequate

297 R2A3A3 BUS 208 EQUIPMENT RATING 10,000 6,445 1.47 Adequate

298 T5G PRI 480 TRANSFORMER #N/A 20,951 1.46 #N/A

299 T5G SEC 208 TRANSFORMER #N/A 4,416 2.89 #N/A

300 T5G S DISC 208 ----- #N/A 4,379 2.80 #N/A

301 R2A3A4 BUS 208 EQUIPMENT RATING 10,000 3,631 1.77 Adequate

302 D4A2A1 BUS 480 EQUIPMENT RATING 25,000 17,059 2.16 Adequate

303 L4A2A1 BUS 480 EQUIPMENT RATING 22,000 12,855 1.29 Adequate

304 T6K PRI 480 TRANSFORMER #N/A 15,487 1.87 #N/A

305 T6K SEC1 208 TRANSFORMER #N/A 8,091 2.90 #N/A

306 D2A2A1 FDR 208 EQUIPMENT RATING 10,000 7,917 2.79 Adequate

307 D2A2A1 BUS 208 EQUIPMENT RATING 10,000 7,916 2.79 Adequate

309 R2A2A2 BUS 208 EQUIPMENT RATING 10,000 5,953 1.44 Adequate

310 R2A3A3 BUS 208 EQUIPMENT RATING 10,000 2,660 0.69 Adequate

311 R2A3A4 BUS 208 EQUIPMENT RATING 10,000 5,953 1.44 Adequate

312 L4A1A1 FDR 480 EQUIPMENT RATING 22,000 14,121 1.02 Adequate

313 L4A1A1 BUS 480 EGB(3P) 35,000 14,118 1.02 Adequate

314 T5K PRI 480 TRANSFORMER #N/A 13,248 0.97 #N/A

315 T5K SEC 208 TRANSFORMER #N/A 4,240 2.56 #N/A

316 R2A1A1 FDR 208 EQUIPMENT RATING 10,000 4,097 2.32 Adequate

317 R2A1A1 BUS 208 QOB 10,000 4,431 2.32 Adequate

318 R2A1A2 BUS 208 EQUIPMENT RATING 10,000 4,016 2.20 Adequate

319 R2A1A3 BUS 208 EQUIPMENT RATING 10,000 2,251 0.94 Adequate

400 T1B SEC 480 TRANSFORMER #N/A 66,779 4.65 #N/A

#N/A = Number not available. SCCT Page 9 of 2118 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

401 SB1B FDR 480 EQUIPMENT RATING 100,000 66,150 4.44 Adequate

402 SB1B BUS 480 NW-H 100,000 66,118 4.44 Adequate

403 D4A1B1 BUS 480 EQUIPMENT RATING 18,000 9,159 1.98 Adequate

404 L4A1B1 BUS 480 EQUIPMENT RATING 14,000 8,120 1.56 Adequate

405 T6K PRI 480 TRANSFORMER #N/A 8,914 1.91 #N/A

406 T6K SEC 208 TRANSFORMER #N/A 6,942 2.72 #N/A

407 D2A1B1 FDR 208 EQUIPMENT RATING 10,000 6,812 2.64 Adequate

408 D2A1B1 BUS 208 FA(3P) 25,000 6,811 2.64 Adequate

409 R2A1B1 BUS 208 EQUIPMENT RATING 10,000 5,641 1.65 Adequate

410 R2A1B2 BUS 208 EQUIPMENT RATING 10,000 4,344 1.14 Adequate

411 R2A1B3 BUS 208 EQUIPMENT RATING 10,000 5,470 1.56 Adequate

412 R2A1B4 BUS 208 EQUIPMENT RATING 10,000 4,464 1.17 Adequate

413 R2A1B5 BUS 208 EQUIPMENT RATING 10,000 5,306 1.48 Adequate

414 D4A2B1 BUS 480 EQUIPMENT RATING 18,000 8,849 1.97 Adequate

415 L4A2B1 BUS 480 EQUIPMENT RATING 14,000 7,728 1.51 Adequate

416 T6K PRI 480 TRANSFORMER #N/A 8,402 1.84 #N/A

417 T6K SEC 208 TRANSFORMER #N/A 6,808 2.65 #N/A

418 D2A2B1 FDR 208 EQUIPMENT RATING 10,000 6,683 2.58 Adequate

419 D2A2B1 BUS 208 FA(3P) 25,000 6,682 2.58 Adequate

420 R2A2B1 BUS 208 EQUIPMENT RATING 10,000 5,381 1.55 Adequate

421 R2A2B2 BUS 208 EQUIPMENT RATING 10,000 5,381 1.55 Adequate

422 R2A2B3 BUS 208 EQUIPMENT RATING 10,000 5,222 1.48 Adequate

423 D4A3B1 BUS 480 EQUIPMENT RATING 18,000 13,549 1.56 Adequate

424 L4A3B1 BUS 480 EQUIPMENT RATING 18,000 10,904 1.16 Adequate

#N/A = Number not available. SCCT Page 10 of 2119 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

425 T6K PRI 480 TRANSFORMER #N/A 12,993 1.50 #N/A

426 T6K SEC 208 TRANSFORMER #N/A 7,794 2.63 #N/A

427 D2A3B1 FDR 208 EQUIPMENT RATING 10,000 7,631 2.54 Adequate

428 D2A3B1 BUS 208 FA(3P) 25,000 7,629 2.54 Adequate

430 R2A3B1 BUS 208 EQUIPMENT RATING 10,000 5,761 1.39 Adequate

431 R2A3B2 BUS 208 EQUIPMENT RATING 10,000 5,573 1.33 Adequate

432 R2A3B3 BUS 208 EQUIPMENT RATING 10,000 5,394 1.27 Adequate

433 T5G PRI 480 TRANSFORMER #N/A 12,482 1.39 #N/A

434 T5G SEC 208 TRANSFORMER #N/A 4,170 2.72 #N/A

435 T5G S DISC 208 JD 25,000 4,068 2.52 Adequate

436 R2A3B4 BUS 208 EQUIPMENT RATING 10,000 2,512 1.15 Adequate

437 D4LBB1 BUS 480 EQUIPMENT RATING 65,000 24,701 1.84 Adequate

438 T8 PRI 480 TRANSFORMER #N/A 23,546 1.83 #N/A

439 T8 SEC 208 TRANSFORMER #N/A 11,312 3.20 #N/A

440 D2LBB1 FDR 208 EQUIPMENT RATING 22,000 11,035 3.13 Adequate

441 D2LBB1 BUS 208 FA(3P) 25,000 11,033 3.13 Adequate

442 X2LBB1 BUS 208 EQUIPMENT RATING 22,000 8,958 1.80 Adequate

443 X2LBB2 BUS 208 EQUIPMENT RATING 10,000 8,602 1.68 Adequate

444 X2LBB3 BUS 208 EQUIPMENT RATING 10,000 8,267 1.57 Adequate

445 X2LBB4 BUS 208 EQUIPMENT RATING 10,000 7,952 1.49 Adequate

446 X2LBB5 BUS 208 EQUIPMENT RATING 10,000 7,655 1.41 Adequate

447 L4LBB1 BUS 480 EQUIPMENT RATING 35,000 20,523 1.38 Adequate

448 D4L1B1 BUS 480 EQUIPMENT RATING 35,000 23,723 1.81 Adequate

449 T8 PRI 480 TRANSFORMER #N/A 20,786 1.78 #N/A

#N/A = Number not available. SCCT Page 11 of 2120 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

451 T8 SEC 208 TRANSFORMER #N/A 11,019 3.12 #N/A

452 D2L1B1 FDR 208 EQUIPMENT RATING 22,000 10,755 3.05 Adequate

453 D2L1B1 BUS 208 FH(3P) 65,000 10,754 3.05 Adequate

454 X2L1B1 BUS 208 EQUIPMENT RATING 10,000 6,313 1.16 Adequate

455 X2L1B2 BUS 208 EQUIPMENT RATING 10,000 5,573 1.03 Adequate

456 X2L1B3 BUS 208 EQUIPMENT RATING 10,000 4,846 0.92 Adequate

457 X2L1B4 BUS 208 EQUIPMENT RATING 10,000 4,381 0.86 Adequate

458 X2L1B5 BUS 208 EQUIPMENT RATING 10,000 3,907 0.80 Adequate

459 X2L1B6 BUS 208 EQUIPMENT RATING 10,000 5,922 1.09 Adequate

460 X2L1B7 BUS 208 EQUIPMENT RATING 10,000 5,259 0.98 Adequate

461 X2L1B8 BUS 208 EQUIPMENT RATING 10,000 4,602 0.89 Adequate

462 X2L1B9 BUS 208 EQUIPMENT RATING 10,000 4,084 0.83 Adequate

463 X2L1B10 BS 208 EQUIPMENT RATING 10,000 3,744 0.78 Adequate

464 L4L1B1 BUS 480 EQUIPMENT RATING 35,000 22,989 1.76 Adequate

465 T5K PRI 480 TRANSFORMER #N/A 19,021 1.31 #N/A

466 T5K SEC 208 TRANSFORMER #N/A 4,384 2.82 #N/A

467 R2L1B1 FDR 208 EQUIPMENT RATING 10,000 4,309 2.66 Adequate

468 R2L1B1 BUS 208 QOB 10,000 4,841 2.66 Adequate

469 D4L2B1 BUS 480 EQUIPMENT RATING 35,000 22,541 1.78 Adequate

470 T8 PRI 480 TRANSFORMER #N/A 19,872 1.75 #N/A

471 T8 SEC 208 TRANSFORMER #N/A 10,909 3.08 #N/A

473 D2L2B1 BUS 208 EQUIPMENT RATING 22,000 10,649 3.02 Adequate

474 X2L2B1 BUS 208 EQUIPMENT RATING 10,000 5,889 1.09 Adequate

475 X2L2B2 BUS 208 EQUIPMENT RATING 10,000 5,384 1.01 Adequate

#N/A = Number not available. SCCT Page 12 of 2121 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

476 X2L2B3 BUS 208 EQUIPMENT RATING 10,000 4,953 0.94 Adequate

477 X2L2B4 BUS 208 EQUIPMENT RATING 10,000 4,470 0.88 Adequate

478 X2L2B5 BUS 208 EQUIPMENT RATING 10,000 4,069 0.83 Adequate

479 X2L2B6 BUS 208 EQUIPMENT RATING 10,000 5,889 1.09 Adequate

480 X2L2B7 BUS 208 EQUIPMENT RATING 10,000 5,384 1.01 Adequate

481 X2L2B8 BUS 208 EQUIPMENT RATING 10,000 4,953 0.94 Adequate

482 X2L2B9 BUS 208 EQUIPMENT RATING 10,000 4,470 0.88 Adequate

483 X2L2B10 BS 208 EQUIPMENT RATING 10,000 4,069 0.83 Adequate

484 L4L2B1 BUS 480 EQUIPMENT RATING 35,000 21,875 1.73 Adequate

485 T5K PRI 480 TRANSFORMER #N/A 17,544 1.25 #N/A

486 T5K SEC 208 TRANSFORMER #N/A 4,352 2.78 #N/A

487 R2L2B1 FDR 208 EQUIPMENT RATING 10,000 4,278 2.63 Adequate

488 R2L2B1 BUS 208 QOB 10,000 4,792 2.63 Adequate

489 D4L3B1 BUS 480 EQUIPMENT RATING 35,000 22,541 1.78 Adequate

490 T8 PRI 480 TRANSFORMER #N/A 19,872 1.75 #N/A

491 D2L3B1 FDR 208 EQUIPMENT RATING 22,000 10,650 3.02 Adequate

491 T8 SEC 208 TRANSFORMER #N/A 10,650 3.02 #N/A

492 D2L3B1 BUS 208 FA(3P) 25,000 10,649 3.02 Adequate

493 X2L3B1 BUS 208 EQUIPMENT RATING 10,000 5,711 1.06 Adequate

494 X2L3B2 BUS 208 EQUIPMENT RATING 10,000 5,233 0.98 Adequate

495 X2L3B3 BUS 208 EQUIPMENT RATING 10,000 4,582 0.89 Adequate

496 X2L3B4 BUS 208 EQUIPMENT RATING 10,000 4,162 0.84 Adequate

497 X2L3B5 BUS 208 EQUIPMENT RATING 10,000 3,810 0.80 Adequate

498 X2L3B6 BUS 208 EQUIPMENT RATING 10,000 5,711 1.06 Adequate

#N/A = Number not available. SCCT Page 13 of 2122 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

499 X2L3B7 BUS 208 EQUIPMENT RATING 10,000 5,233 0.98 Adequate

500 X2L3B8 BUS 208 EQUIPMENT RATING 10,000 4,582 0.89 Adequate

501 X2L3B9 BUS 208 EQUIPMENT RATING 10,000 4,162 0.84 Adequate

502 X2L3B10 BS 208 EQUIPMENT RATING 10,000 3,810 0.80 Adequate

503 L4L3B1 BUS 480 EQUIPMENT RATING 35,000 21,875 1.73 Adequate

504 T5K PRI 480 TRANSFORMER #N/A 17,544 1.25 #N/A

505 T5K SEC 208 TRANSFORMER #N/A 4,352 2.78 #N/A

506 R2L3B1 FDR 208 EQUIPMENT RATING 10,000 4,278 2.63 Adequate

507 R2L3B1 BUS 208 QOB 10,000 4,792 2.63 Adequate

508 L4LPB1 BUS 480 EQUIPMENT RATING 14,000 7,245 0.68 Adequate

509 L4LPB1A BS 480 EQUIPMENT RATING 10,000 7,118 0.68 Adequate

510 D4LBD1 BUS 480 EQUIPMENT RATING 18,000 16,787 2.15 Adequate

511 T8 PRI 480 TRANSFORMER #N/A 15,992 2.12 #N/A

513 D2LBD1 FDR 208 EQUIPMENT RATING 22,000 10,059 3.12 Adequate

514 D2LBD1 BUS 208 FA(3P) 25,000 10,058 3.12 Adequate

515 X2LBD1 BUS 208 EQUIPMENT RATING 22,000 3,752 0.82 Adequate

516 X2LBD2 BUS 208 EQUIPMENT RATING 10,000 4,386 0.91 Adequate

517 X2LBD3 BUS 208 EQUIPMENT RATING 10,000 4,724 0.96 Adequate

518 L4LBD1 BUS 480 EQUIPMENT RATING 18,000 14,851 1.69 Adequate

519 T4K PRI 480 TRANSFORMER #N/A 14,188 1.47 #N/A

520 T4K SEC 208 TRANSFORMER #N/A 2,795 2.70 #N/A

521 R2LBD2 FDR 208 EQUIPMENT RATING 22,000 2,697 2.50 Adequate

521 R2LBD3 BUS 208 EQUIPMENT RATING 22,000 2,697 2.50 Adequate

522 D4L1D1 BUS 480 EQUIPMENT RATING 25,000 15,429 2.12 Adequate

#N/A = Number not available. SCCT Page 14 of 2123 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

523 T8 PRI 480 TRANSFORMER #N/A 14,543 2.08 #N/A

524 T8 SEC 208 TRANSFORMER #N/A 10,016 3.13 #N/A

525 D2L1D1 FDR 208 EQUIPMENT RATING 22,000 9,588 3.01 Adequate

526 D2L1D1 BUS 208 FA(3P) 25,000 9,587 3.01 Adequate

527 X2L1D1 BUS 208 EQUIPMENT RATING 22,000 5,417 1.11 Adequate

528 X2L1D2 BUS 208 EQUIPMENT RATING 10,000 4,860 1.01 Adequate

529 X2L1D3 BUS 208 EQUIPMENT RATING 10,000 4,399 0.93 Adequate

530 X2L1D4 BUS 208 EQUIPMENT RATING 10,000 4,013 0.88 Adequate

531 X2L1D5 BUS 208 EQUIPMENT RATING 10,000 3,613 0.82 Adequate

532 X2L1D6 BUS 208 EQUIPMENT RATING 10,000 5,741 1.18 Adequate

533 X2L1D7 BUS 208 EQUIPMENT RATING 10,000 5,125 1.06 Adequate

534 X2L1D8 BUS 208 EQUIPMENT RATING 10,000 4,860 1.01 Adequate

535 X2L1D9 BUS 208 EQUIPMENT RATING 10,000 4,399 0.93 Adequate

536 X2L1D10 BS 208 EQUIPMENT RATING 10,000 3,927 0.86 Adequate

537 L4L1D1 BUS 480 EQUIPMENT RATING 22,000 12,799 1.72 Adequate

538 T5K PRI 480 TRANSFORMER #N/A 12,697 1.49 #N/A

539 T5K SEC 208 TRANSFORMER #N/A 4,175 2.77 #N/A

540 R2L1D1 FDR 208 EQUIPMENT RATING 10,000 4,107 2.62 Adequate

541 R2L1D1 BUS 208 QOB 10,000 4,596 2.62 Adequate

542 D4L2D1 BUS 480 EQUIPMENT RATING 25,000 14,988 2.11 Adequate

543 T8 PRI 480 TRANSFORMER #N/A 14,150 2.07 #N/A

544 T8 SEC 208 TRANSFORMER #N/A 9,935 3.11 #N/A

545 D2L2D1 FDR 208 EQUIPMENT RATING 22,000 9,514 3.00 Adequate

546 D2L2D1 BUS 208 FA(3P) 25,000 9,513 2.99 Adequate

#N/A = Number not available. SCCT Page 15 of 2124 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

547 X2L2D1 BUS 208 EQUIPMENT RATING 22,000 5,245 1.08 Adequate

548 X2L2D2 BUS 208 EQUIPMENT RATING 10,000 4,841 1.01 Adequate

549 X2L2D3 BUS 208 EQUIPMENT RATING 10,000 4,384 0.94 Adequate

550 X2L2D4 BUS 208 EQUIPMENT RATING 10,000 4,001 0.88 Adequate

551 X2L2D5 BUS 208 EQUIPMENT RATING 10,000 3,603 0.82 Adequate

553 X2L2D7 BUS 208 EQUIPMENT RATING 10,000 4,841 1.01 Adequate

554 X2L2D8 BUS 208 EQUIPMENT RATING 10,000 4,384 0.94 Adequate

555 X2L2D9 BUS 208 EQUIPMENT RATING 10,000 4,001 0.88 Adequate

556 X2L2D10 BS 208 EQUIPMENT RATING 10,000 3,676 0.83 Adequate

557 L4L2D1 BUS 480 EQUIPMENT RATING 22,000 12,493 1.73 Adequate

558 T5K PRI 480 TRANSFORMER #N/A 12,398 1.50 #N/A

559 T5K SEC 208 TRANSFORMER #N/A 4,161 2.76 #N/A

560 R2L2D1 FDR 208 EQUIPMENT RATING 10,000 4,093 2.62 Adequate

561 R2L2D1 BUS 208 QOB 10,000 4,580 2.62 Adequate

562 D4L3D1 BUS 480 EQUIPMENT RATING 25,000 14,572 2.10 Adequate

563 T8 PRI 480 TRANSFORMER #N/A 13,778 2.06 #N/A

564 T8 SEC 208 TRANSFORMER #N/A 9,855 3.09 #N/A

565 D2L3D1 FDR 208 EQUIPMENT RATING 22,000 9,644 3.03 Adequate

566 D2L3D1 BUS 208 FA(3P) 25,000 9,643 3.03 Adequate

567 X2L3D1 BUS 208 EQUIPMENT RATING 22,000 4,875 1.01 Adequate

568 X2L3D2 BUS 208 EQUIPMENT RATING 10,000 4,023 0.88 Adequate

569 X2L3D3 BUS 208 EQUIPMENT RATING 10,000 4,519 0.95 Adequate

570 X2L3D4 BUS 208 EQUIPMENT RATING 10,000 4,209 0.90 Adequate

571 X2L3D5 BUS 208 EQUIPMENT RATING 10,000 3,695 0.83 Adequate

#N/A = Number not available. SCCT Page 16 of 2125 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

572 X2L3D6 BUS 208 EQUIPMENT RATING 10,000 4,751 0.99 Adequate

573 X2L3D7 BUS 208 EQUIPMENT RATING 10,000 3,621 0.82 Adequate

574 L4L3D1 BUS 480 EQUIPMENT RATING 22,000 12,836 1.81 Adequate

575 T5K PRI 480 TRANSFORMER #N/A 11,522 1.41 #N/A

576 T5K SEC 208 TRANSFORMER #N/A 4,122 2.70 #N/A

577 R2L3D1 FDR 208 EQUIPMENT RATING 10,000 4,055 2.57 Adequate

578 R2L3D1 BUS 208 QOB 10,000 4,512 2.57 Adequate

579 L4LPD1 BUS 480 EQUIPMENT RATING 18,000 6,948 0.88 Adequate

580 ED4LBB1 BS 480 EQUIPMENT RATING 65,000 39,397 2.84 Adequate

581 UPS1 BUS 480 ----- #N/A 6,023 0.56 #N/A

582 EL4LBB1 BS 480 EQUIPMENT RATING 14,000 5,614 0.55 Adequate

583 T2 PRI 480 TRANSFORMER #N/A 4,594 0.45 #N/A

584 T2 SEC 208 TRANSFORMER #N/A 745 2.16 #N/A

585 EL2LBB1FDR 208 EQUIPMENT RATING 10,000 732 2.02 Adequate

586 EL2LBB1 BS 208 QOB 10,000 762 2.02 Adequate

587 EL4L1B1 BS 480 EQUIPMENT RATING 14,000 4,749 0.53 Adequate

588 EL4L2B1 BS 480 EQUIPMENT RATING 14,000 4,534 0.52 Adequate

588 EL4LPB1 BS 480 EQUIPMENT RATING 14,000 4,534 0.52 Adequate

589 EL4L3B1 BS 480 EQUIPMENT RATING 14,000 4,338 0.52 Adequate

591 UPS 2 BUS 480 ----- #N/A 25,240 1.17 #N/A

592 EL4LBA1 BS 480 EQUIPMENT RATING 18,000 17,758 0.84 Adequate

594 T2 SEC 208 TRANSFORMER #N/A 765 2.29 #N/A

595 EL2LBA1 FD 208 EQUIPMENT RATING 10,000 752 2.12 Adequate

596 EL2LBA1 BS 208 QOB 10,000 793 2.12 Adequate

#N/A = Number not available. SCCT Page 17 of 2126 of 718

EQUIP. DESCRIPTION LOWEST RATED DEVICE MAXIMUM LINE SIDE

BUS PER SYSTEM ONE NOMINAL IN EQUIPMENT ENCLOSURE AVAILABLE X/R MAXIMUM SERIES NOTES

NO. LINE DIAGRAM(S) L-L VOLTS TYPE AIC OR WCR 3-PH SCA RATIO DEVICE RATING

597 EL4L1A1 BS 480 EQUIPMENT RATING 14,000 9,075 0.61 Adequate

598 EL4L2A1 BS 480 EQUIPMENT RATING 14,000 8,325 0.60 Adequate

599 EL4L3A1 BS 480 EQUIPMENT RATING 14,000 7,689 0.58 Adequate

600 EL4A1A1 BS 480 EQUIPMENT RATING 14,000 6,897 0.57 Adequate

601 EL4A2A1 BS 480 EQUIPMENT RATING 14,000 6,454 0.56 Adequate

602 EL4A3A1 BS 480 EQUIPMENT RATING 14,000 6,064 0.55 Adequate

603 UPS3 BUS 480 ----- #N/A 4,109 0.52 #N/A

604 EL4LBD1 BS 480 EQUIPMENT RATING 65,000 3,822 0.50 Adequate

605 EL4L1D1 BS 480 EQUIPMENT RATING 65,000 3,682 0.50 Adequate

606 EL4L2D1 BS 480 EQUIPMENT RATING 65,000 3,551 0.50 Adequate

607 EL4L3D1 BS 480 EQUIPMENT RATING 65,000 3,429 0.50 Adequate

608 UPS4 BUS 480 ----- #N/A 5,603 0.55 #N/A

610 EL4LBC1 BS 480 EQUIPMENT RATING 65,000 5,085 0.53 Adequate

611 T2 PRI 480 TRANSFORMER #N/A 4,232 0.44 #N/A

612 T2 SEC 208 TRANSFORMER #N/A 742 2.14 #N/A

613 EL2LBC1 FD 208 EQUIPMENT RATING 10,000 729 2.00 Adequate

614 EL2LBC1 BS 208 QOB 10,000 757 2.00 Adequate

615 EL4L1C1 BS 480 EQUIPMENT RATING…