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Section 6: Electrical Connections
Generator Set Connections
Installation must comply with all
national and local electrical building
codes.
See
Figure
6-1. The electrical wiring enclosure is located
behind an access panel on the intake end of the unit.
Remove intake side panel as directed in
Panel
Removal, and then remove access panel with a 4
mm hex key. Connect wires according to diagram and
tables.
1. Remove main AC / control wiring knock-out plugs
from the back of the generator set.
2. Using the appropriate wiring hole(s), install conduit
and main AC and control wires between generator
set and transfer switch.
3. Close any unused hole with a NEMA 3R or IP44
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. All of the generator set
control wiring circuits are Class 1 remote control or sig-
naling circuits. Class 1 circuits are required to be installed
in accordance with Part 1 of NEC Article 300 and with a
NEC recognized Chapter 3 wiring method. Use of low
voltage cables for generator set control circuit wiring is
prohibited. Recommended wire gauge sizes for this wir-
ing depends on wire length, as recommended in
3.
Exception: Conductors of AC and DC circuits, rated
1000 volts nominal or less, may 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. Verify this exception com-
plies with national and local electrical building codes.
4. See
Figure
6-1. Strip insulation from wire ends. Do
not remove excessive insulation. Route sense
wires through supplied wire tie (C1), and connect
to sense wire terminal block (B). Push down on
spring loaded connection point with a flat head
screwdriver, insert wire, and release.
5. Using the same process, route control wires
through second supplied wire tie (C2), and connect
to control wire terminal block (A).
6. Tighten wire ties and clip excess length when all
wires are securely connected to correct terminals.
Installation Guidelines For 50 Hz Air-Cooled Generator Sets
NOTE: Only bare wire should be inserted into each ter-
minal. Do not insert any wire insulation into terminals.
NOTE: Damage caused by mis-wiring of interconnect
wires is not warrantable.
ISO000218
Intake Side
Table 6-
Electrical Connections
31
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