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5 wire recommendations/ sizing – Milton CAT G200LG4 200kW_250kVA LG Installation Guide User Manual

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14

Terminals 178 and 183 in the generator AC con-

nection box are not used in this application.
Connection of any wires to these terminals may
result in unwarrantable damage to the control
board.

The load wires consist of wires run between the genera-
tor main circuit breaker and the transfer mechanism,
and a neutral wire. See "Wire Recommendations/
Sizing" for load wire sizing information.

3.5

WIRE RECOMMENDATIONS/
SIZING

(SEE TABLE 3)

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3.5.1 CONTROL WIRING

Control system interconnections on an R-series con-
trolled generator consist of N1 and N2, and leads 23
and 194. Control system interconnection leads must
be run in a conduit that is separate from the AC
power leads. Recommended wire gauge size depends
on the length of the wire:

‹

3.5.2 LOAD WIRING

Power source and load line conductors must be prop-
erly supported, of approved insulative qualities, and
of the correct wire gauge size.

When connecting power, source, and load lines
remove surface oxides from stripped ends of con-
ductors with a wire brush. Apply joint compound to
stripped ends of conductors. Tighten terminals to the
specified torque value, as given in the owner's manual
for the transfer switch.

Recommended wire gauge size depends on the cur-
rent rating of the generator main circuit breaker.

Section 3 — Operation

Liquid-cooled Generators

Max. Cable Length

Recommended Wire Size

460 feet (140m)

No. 18 AWG.

461 to 730 feet (223m)

No. 16 AWG.

731 to 1,160 feet (354m)

No. 14 AWG.

1,161 to 1850 feet (565m)

No. 12 AWG.

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