Toshiba 4400 Series Installation And Operation Manual page 52

Use only copper wires for external cables.
TABLE 9.2 RECOMMENDED CABLE SIZE & TIGHTENING TORQUE FOR 50KVA UPS FOR
Block Number
AC Input A, B, C
AC Input Neutral (N)
2
AC Output A, B, C
AC Output Neutral (N)
2
Secondary Input A, B, C
Secondary Neutral (N)
2
Battery Terminals +/-
1
One battery string. (Consult factory if using more than one battery string.)
1
Size neutral cable appropriate to actual load type: balanced, unbalanced, non-linear.
2
Use only copper wires for external cables.
TABLE 9.3 RECOMMENDED CABLE SIZE & TIGHTENING TORQUE FOR 80KVA UPS FOR
Block Number
AC Input A, B, C
AC Input Neutral (N)
2
AC Output Neutral (N)
AC Output A, B, C
Secondary Input A, B, C
Secondary Neutral (N)
2
Battery Terminals +/-
1
One battery string. (Consult factory if using more than one battery string.)
1
Size neutral cable appropriate to actual load type: balanced, unbalanced, non-linear.
2
See Appendix D – Input/Output Cabling Guide, for current calculations for different input and output
transformer combinations. Use these values to determine the correct power cable size per the National
Electrical Code (Ref. Table 310.16.)
Lug tightening torque is the same as given in Tables 9.1 thru 9.3.
42
120/208V IN, 120/208V OUT
Cable Size (Min-Max) 75 °C Copper Wire in Conduit
Terminal Lug Capacity
#6 – 250 kcmil
#6 – 250 kcmil
#6 – 250 kcmil
#6 – 250 kcmil
#6 – 250 kcmil
#6 – 250 kcmil
#6 – 250 kcmil
120/208V IN, 120/208V OUT
Cable Size (Min-Max) 75 °C Copper Wire in Conduit
Terminal Lug Capacity
(2) x (1/0 AWG – 600 kcmil)
(2) x (1/0 – 600 kcmil)
(2) x (1/0 – 600 kcmil)
(2) x (1/0 – 600 kcmil)
(2) x (1/0 – 600 kcmil)
(2) x (1/0 – 600 kcmil)
(2) x (1/0 – 600 kcmil)
4400 Series Installation and Operation Manual – 64527-006
50 kVA
4/0
250 kcmil
4/0
250 kcmil
4/0
250 kcmil
4/0
80 kVA
500 kcmil
(2) x 500 kcmil – (2) x 500 kcmil
2) x 350 kcmil – (2) x 500 kcmil
500 kcmil
500 kcmil
(2) x 350 kcmil – (2) x 500 kcmil
500 kcmil – (2) x 2/0
Tightening
Torque 2
225-250 in-lb
(25.4-28.2 N•m)
(Hex drive socket)
Tightening
Torque 2
375 in-lb
(42 N•m)
(3/8 in Hex drive
socket)