Appendix D - Input/Output Cabling Guide - Toshiba 5000 SERIES Installation And Operation Manual

Appendix D – Input/Output Cabling Guide
The 5000 Series UPS can be configured with a variety of Input and Output voltage transformers to
accommodate different Input/Output voltage combinations.
Table D.1 – Recommended Cable Size by Input/Output/Bypass Voltage(3P/4W + G)
Table D.2 – Recommended Cable Size by Input/Output/Bypass Voltage(3P/3W + G)
Table D.3 – Input Transformer Current at Input Voltage
Table D.4 – Output Transformer Current at Output Voltage
Tables D.1 and D.2 lists the recommended Power Cable sizing for each of the UPS – Vin/Vout transformers.
NOTE: Ampacity should be determined uisng Table 310.16 of the NEC (National Electrical Code)
for 75°C copper conductors, and derated to accomidate the ambient temperature of the
operating environment.
Neutral cable sizing in Table D.1 is based on allowing, when possible, 1.7 x Imax for current carrying
Neutral. Sizing calculations are based on 4-6 current carrying conductors per conduit. l
TABLE D.1 – RECOMMENDED CABLE SIZE BY INPUT/OUTPUT/BYPASS VOLTAGE FOR
Vin/out/byp 3P/4W+G
208/120V Phase
Neutral
220/127V Phase
Neutral
240/139V Phase
Neutral
380/220V Phase
Neutral
400/227V Phase
Neutral
415/240V Phase
Neutral
480/277V Phase
Neutral
600/347V Phase
Neutral
1 – Cable sizing based on Table 310.16 Allowable Ampacities of Insulated Conductors , for 75C
Copper conductors; National Electrical Code 2008 ed.
TABLE D.2 – RECOMMENDED CABLE SIZE BY INPUT/OUTPUT/BYPASS VOLTAGE FOR
Vin/out
3P/3W+G
208V Phase
220V Phase
5000 Series NEMA-3R 3-Phase UPS Installation and Operation Manual – 92975-000
3P/4W + GND AT 30 °C AMBIENT
20kVA
(AWG)
#3
2/0
#3
1/0
#4
1/0
#6
#3
#8
#4
#8
#4
#8
#4
#8
#6
3P/3W + GND AT 30 °C AMBIENT
20kVA
(AWG)
#4
#4
1
30kVA
(AWG)
1/0
4/0
#1
41/0
#1
3/0
#4
#1
#4
#1
#4
#2
#6
#3
#6
#4
1
30kVA
(AWG)
#2
#2
93