Installation Instructions - Toshiba 431A Installation And Operation Manual

4300 series ancillary cabinets
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13.4

INSTALLATION INSTRUCTIONS

DANGER: HAZARDOUS VOLTAGES MAY EXIST.
Verify all power is removed from the UPS and power cables prior connecting the power cables to
the Auxiliary Cabinet terminals, Maintenance Bypass Switch terminals, or UPS terminals.
The Toshiba Maintenance Bypass Cabinet (431M) can be used in either of two arrangements:
431M with the 4300 UPS,
431A with the 431M and the 4300 UPS.
431M with 431A and 4300 UPS
Select the proper cable size per Table 13.1.
UPS
Output Current
Rating
30 kVA
75 A
50 kVA
125 A
* Wire capacity for Phase lugs is 250 kcmil - 6 AWG, Neutral lugs is 350 kcmil - 6 AWG.
Terminate the cable end connecting to the 431M with 0.5 inch bolt hole terminal lugs. See Table 13.2 for recom-
mended torque, and Table 13.3 for examples of NEMA 2-Hole terminations.
The 431M Circuit Breakers are equipped with terminal bus strips pre-drilled in a standard NEMA 2-hole pattern
(0.5 in. bolt holes on 1.75 in. centers) to facilitate installation of power cables. Use of NEMA two-hole cable termi-
nations is recommended.
54
Table 13.1 - 431M Input/Output Power Cable Sizes
(
Cable sizes for 75°C Copper Cable)
Recommended/Maximum Wire size and Torque Requirement
Ampacity (Four conductors
in conduit)
117
188
4300 Series Ancillary Cabinets Installation and Operation Manual
Phase AWG*
Neutral AWG*
1 - 250 kcmil
3/0 - 350 kcmil
3/0 - 250 kcmil
350 kcmil
Tightening
Torque
200 in.-lbs.
200 in.-lbs.

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