Generac Generator - Manual (Page 8)

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Section 2 — Installation
PowerMaster Technical Manual
2.5 INSTALLING THE AUXILIARY
SWITCHES TO THE TRANSFER
SWITCH
The included auxiliary switches need to be added to
the transfer switch to provide switch position sens-
ing to the PowerMaster assembly. This allows the
PowerMaster assembly to disconnect the selected
loads only when the transfer switch is in the genera-
tor position. These switches should be installed as
follows: Refer to figure 2.
Figure 2 — Auxiliary Switch Installation
SWITCH SHOWN IN THE
UTILITY POSITION
SIDE VIEW
MOUNTING THE AUXILIARY SWITCHES
AUXILIARY SWITCH
MOUNTING LOCATION
1 1
3 2
3
2
GENERATOR UTILITY
1 = COMMON
2 = NC
3 = NO
UTILITY AUX SWITCH
CONNECT TO
PINS 1 AND 2 GENERATOR AUX SWITCH
CONNECT TO
PINS 1 AND 3
E1
T1
E2
T2

There are multiple voltage sources present inside
the transfer switch enclosure. Make sure to turn
OFF both the UTILITY (NORMAL) and the EMER-
GENCY (STANDBY) power sources before install-
ing the auxiliary switches. Failure to do so could
result in an extremely hazardous, possibly lethal,
electrical shock.
Do not turn these supplies back on until the
PowerMaster installation has been completed in
it’s entirety.
Mount the two auxiliary switches (provided) to the
transfer switch using the four screws and four wash-
ers (provided) as shown in figure 2.
2.6 CONNECTING THE AUXILIARY
SWITCHES
The auxiliary switches need to be connected to the
PowerMaster assembly using a minimum of 18AWG
wire as follows: Refer to figure 2.
2.6.1 GENERATOR SIDE AUXILIARY SWITCH
1. Connect one end of each of the two 18AWG wires
to the generator auxiliary switch.
Strip the 18AWG wire 0.234 inch (15/64") and
use an appropriate crimping tool to crimp the
3/16” fast on lugs (provided).
The two wires should be connected to pins 1 and
3 on the generator auxiliary switch.
2. Connect the other end of the two wires to the
Control Circuit 1 COM and N.O. positions on the
terminal strip inside the PowerMaster assembly.
These wires are not polarity sensitive.
These wires should be stripped 0.25 inch (¼")
before being inserted into the terminal strip.
The terminal strip clamping screws should be
tightened to 7 inch pounds.
2.6.2 UTILITY SIDE AUXILIARY SWITCH
1. Connect one end of each of the two 18AWG wires
to the utility auxiliary switch.
Strip the 18AWG wire 0.234 inch (15/64") and
use an appropriate crimping tool to crimp the
3/16" fast on lugs (provided).
The two wires should be connected to pins 1 and
2 on the utility auxiliary switch.
2. Connect the other end of the two wires to the
Control Circuit 2 COM and N.O. positions on the
terminal strip inside the PowerMaster assembly.
These wires are not polarity sensitive.
These wires should be stripped 0.25 inch (¼")
before being inserted into the terminal strip.
The terminal strip clamping screws should be
tightened to 7 inch pounds.
2.7 RESTORING ALL POWER
SUPPLIES
Now that the PowerMaster installation is completed:
1. Restore power to the appliance(s) disconnected
in section 2.4.
2. Turn the UTILITY (NORMAL) and EMERGENCY
(STANDBY) power supplies back ON.
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