Installation manual

Natural Gas Generator Set Installation Manual-GF Series
Doc. 17855, Rel. 03/2014
4-2
Digital Connections: Connection points, other than
relayed outputs, network, switched B+ and B+ are
considered digital connections to terminal strip TB-1.
The type/gauge wire to use for these connections
are:
• Less than 305 m (1000 ft), use 20 gauge
stranded copper wire.
• 305 to 610 m (1000 to 2000 ft), use 18 gauge
stranded copper wire.
Relay Connections: Due to the wide variety of
devices that can be attached to the relay outputs of
TB1, the electrical contractor must determine the
gauge of the stranded copper wire that is used at this
installation site. Refer to PCC Customer Connections
diagram in Section 7 - Wiring Diagrams.
Network Connections: Refer to 900-0366 Power-
Command Network Installation and Operation
Manual for the type/gauge wire to use for these con-
nections or refer to Figure 4-1.
Table 4-2
Temperature rating of wire that
is intended to be used for
connection of the unit.
Copper conductors only
Aluminum conductors or
copper-clad conductors
a
Row 1
60 or 75° C
Use either
b
AWG, 60° C or
c
AWG, 75° C copper wire.
Use 60° C wire, either
b
AWG
copper or
b
AWG aluminum; or
75° C wire, either
c
AWG copper
or
c
AWG aluminum.
Row 2
60° C
Use
b
AWG, 60° C copper wire. Use 60° C wire, either
b
AWG
copper or
b
AWG aluminum.
Row 3
75° C
Use
c
AWG, 75° C copper wire. Use 75° C wire, either
c
AWG
copper or
c
AWG aluminum.
Row 4
90° C
Use
c
AWG, 90° C copper wire. Use 90° C wire, either
c
AWG
copper or
c
AWG aluminum.
a
Reference to copper wire is not to be included when wiring terminals are intended for only the conductors
specified in the code.
b
The wire size for 60° C wire is not required to be included in the marking; however, when it is included, it
shall be based on the ampacities given in Table 310-16 of the National Electrical Code, ANS/NFPA 70, for
60° C wire and the derating factor described in 12.1.3.
c
The conductor size shall be no smaller than the larger of the following:
1. The conductor size used for the temperature test; or
2. The 75° C wire size based on the ampacities given in Table 310-16 of the National Electrical Code,
ANSI/NFPA 70, and the derating factor described in 12.1.3.