Table 3.4 Recommended Cable Sizes - Toshiba G9000 SERIES Installation And Operation Manual

TABLE 3.4 Recommended Cable Sizes

kVA Input Output
Capacity Voltage Voltage
80kVA 480V 480V
100kVA 480V 480V
160kVA 480V 480V
225kVA 480V 480V
(2) x 250 MCM
(2) x 250 MCM –
300kVA 480V 480V
(2) x 300 MCM
(3) x 300 MCM –
500kVA 480V 480V
(3) x 350 MCM
(4) x 350 MCM –
750kVA 480V 480V
(5) x 250 MCM
*1 – The cables must be selected to be equal to the sizes listed in the table.
*2 – Voltage drop across power cables not to exceed 2% of nominal source voltage.
*3 – Allowable ampere-capacities based on 75 °C insulated copper conductor at ambient temperature of 30 °C.
*4 – All wiring to be in accordance with all applicable national and/or local electrical codes.
G9000 Installation and Operation Manual
Input Side Output Side
Cable Torque Cable
Size ft. lbs Size
1 AWG – 17-22 1 AWG –
1/0 AWG ft. lbs 1/0 AWG
2/0 AWG – 17-22 2/0 AWG –
3/0 AWG ft. lbs 3/0 AWG
250 MCM – 17-22 250 MCM –
300 MCM ft. lbs 300 MCM
500 MCM – 17-22 500 MCM –
ft. lbs (2) x 250 MCM
29-39 (2) x 250 MCM –
ft. lbs (2) x 300 MCM
29-39 (3) x 300 MCM –
ft. lbs (3) x 350 MCM
29-39 (4) x 350 MCM –
ft. lbs (5) x 250 MCM
Bypass Side
Torque Cable Torque
ft. lbs Size ft. lbs
17-22 1 AWG – 17-22
ft. lbs 1/0 AWG ft. lbs
17-22 2/0 AWG – 17-22
ft. lbs 3/0 AWG ft. lbs
17-22 250 MCM – 17-22
ft. lbs 300 MCM ft. lbs
17-22 500 MCM – 17-22
ft. lbs (2) x 250 MCM ft. lbs
29-39 (2) x 250 MCM – 29-39
ft. lbs (2) x 300 MCM ft. lbs
29-39 (3) x 300 MCM – 29-39
ft. lbs (3) x 350 MCM ft. lbs
29-39 (4) x 350 MCM – 29-39
ft. lbs (5) x 250 MCM ft. lbs
DC Input Side
Cable Torque
Size ft. lbs
3/0 AWG – 17-22
4/0 AWG ft. lbs
(2) x 1 AWG – 17-22
(2) x 2/0 AWG ft. lbs
(2) x 3/0 AWG – 17-22
(2) x 250 MCM ft. lbs
(2) x 350 MCM – 17-22
(2) x 400 MCM ft. lbs
(3) x 300 MCM – 29-39
(3) x 350 MCM ft. lbs
(4) x 500 MCM – 29-39
(5) x 300 MCM ft. lbs
(6) x 400 MCM – 29-39
(6) x 500 MCM ft. lbs
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