Installation Guide

Electrical Connections
Installation Guidelines For Australian 50 Hz Air-Cooled Generators 31
Section 6: Electrical Connections
Generator Connections
See Figure 6-1. The electrical wiring enclosure is located
behind an access panel on the intake end of the unit.
Remove the intake side panel as directed in Intake Side
Panel Removal, and then remove the access panel.
Connect wires according to the diagram and tables.
1. Remove the main AC / control wiring knock-out
plugs from the back of the generator.
2. Install the conduit and main AC and control wires
between the generator and the transfer switch
using the appropriate wiring hole.
3. Close the unused hole with a NEMA 3R rated plug
(field-supplied).
NOTE: All conductors are to be rated for minimum 300V.
Control system interconnections may consist of N1, N2,
T1, T2, and leads 23 and 194. The generator control
wiring is a Class 1 signaling circuit. Reference the
instruction manual of the specific engine generator for
wiring connection details. Recommended wire gauge
sizes for this wiring depends on the length of the wire, as
recommended in Table 6-3.
Exception: Conductors of AC and DC circuits, rated
1000 volts nominal or less, shall be permitted to occupy
the same equipment, cable, or conduit. All conductors
shall have an insulation rating equal to at least the maxi-
mum circuit voltage applied to any conductor within the
equipment, cable, or conduit. See NEC 300.3(C)(1).
4. See Figure 6-1. Strip the insulation from the ends
of the wires. Do not remove excessive insulation.
Route the sense wires through the supplied wire tie
(C1), and connect to the sense wire terminal block
(B). Push down on the spring loaded connection
point with a flat head screwdriver, insert wire, and
release.
5. Using the same process, route the control wires
through the second supplied wire tie (C2), and con-
nect to the control wire terminal block (A).
6. When all the wires are securely connected to the
proper terminals, tighten the wire ties and clip the
excess length.
NOTE: Only bare wire should be inserted into each ter-
minal. Do not insert any wire insulation into terminals.