0913000-J0 Rev D
36
7.4.2 Battery Return and Load Return Cables
CAUTION!
Do NOT make final connection to battery live. Insulate and leave disconnected or re
-
move the battery fuses. Switch battery contactors off (if used).
Battery cables should be sized for a 0.25 V drop from battery to the power system at full load including anticipated
growth. The cables should also meet ampacity requirements.
Connect the battery return cables and the load return cables to the common return bus or (see drawings 0250014-
771-04, 0250014-701-04 and 0250014-741-04) or to the external battery return bus bar if that option is in place
(drawing 0380214-F0.
Both bus bars are designed for the following connection options:
• 1/2" holes on 1-3/4" centers
• 3/8" holes on 1" centers
Figure 23 — Customer connections spacing
7.4 Distribution
7.4.1 External Battery Return Bar Wiring
Connect the external battery return bar(s) to the associated power bay positive return detail as shown in Figure 22
..
Figure 22 — External battery return bar wiring
2000/2500A
Power bay
5x 750MCM (min)
To Master Ground Bus
External battery return bar