Recommended Wire Size And Torque Requirements For 50Kva; Table 6.7 50Kva Cabling Sizes; Table 6.8 Bypass Cabling Sizes - Toshiba 4200FA Installation And Operation Manual

6.3.1

Recommended Wire Size and Torque Requirements for 50kVA

Minimum wire sizes are based on NEC Table 310.16. Neutral wire is sized per NEC Article
310.15(B), Grounding wires sized per NEC Article 250.122. Maximum wire capacity of the power
terminal lugs is 250kcmil.
INPUT:
(H1) (H2)
AWG
(H3)
208 V 2/0 – 250 kcmil
220 V 2/0 – 250 kcmil
240 V 2/0 – 250 kcmil
380 V 2 – 250 kcmil
400 V 3 – 250 kcmil
415 V 3 – 250 kcmil
480 V 4 – 250 kcmil
600 V 6 – 250 kcmil
Phase: (A) (B) (C) (N)
Input: (H1) (H2) (H3)
208/120 V
220 V
240 V
380 V
400 V
415 V
480 V
600 V
4200FA Installation and Operation Manual

Table 6.7 50kVA Cabling Sizes

Minimum / Maximum Wire Size and Torque Requirements
UPS Input and Output Terminals TB1 50 kVA*
(USE MINIMUM 75 °C INSULATED COPPER WIRING)
NEUTRAL
(L1)(L2)
(L3)
AWG
250 kcmil 208/120 V
4/0 – 250 kcmil 220/127 V
N/A 240 V
1/0 – 250 kcmil 380/220 V
1/0 – 250 kcmil 400/230 V
1 – 250 kcmil 415/240 V
2 – 250 kcmil 480/277 V
N/A 600 V

Table 6.8 Bypass Cabling Sizes

Minimum / Maximum Wire Size and Torque requirements
UPS Optional Bypass Input Terminals TB4 50 kVA
(USE MINIMUM 75 °C INSULATED COPPER WIRING)
AWG*
1/0 – 250 kcmil
1/0 – 250 kcmil
1/0 – 250 kcmil
2 – 250 kcmil
3 – 250 kcmil
3 – 250 kcmil
4 – 250 kcmil
6 – 250 kcmil
OUTPUT:
AWG
2/0 – 250 kcmil
2/0 – 250 kcmil 4/0 – 250 kcmil
1/0 – 250 kcmil
4 – 250 kcmil 1/0 – 250 kcmil
4 – 250 kcmil 1/0 – 250 kcmil
4 – 250 kcmil
6 – 250 kcmil
6 – 250 kcmil
50 kVA
NEUTRAL AWG* Tightening Torque
250 kcmil
250 kcmil
N/A
2/0 – 250 kcmil
2/0 – 250 kcmil
1 – 250 kcmil
2 – 250 kcmil
N/A
NEUTRAL Tightening
AWG ** Torque
250 kcmil 200 in-lbs.
200 in-lbs.
N/A 200 in-lbs.
200 in-lbs.
200 in-lbs.
1 – 250 kcmil 200 in-lbs.
1 – 250 kcmil 200 in-lbs.
N/A 200 in-lbs.
200 in-lbs.
200 in-lbs.
200 in-lbs.
200 in-lbs.
200 in-lbs.
200 in-lbs.
200 in-lbs.
200 in-lbs.
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