Connecting the Auxiliary Switches | Generac Generator specs

Section 2 — Installation

PowerMaster Technical Manual

2.5INSTALLING 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

E1 E2

AUXILIARY SWITCH

MOUNTING LOCATION

T1 T2

GENERATOR AUX SWITCH			UTILITY AUX SWITCH
CONNECT TO			CONNECT TO
PINS 1 AND 3			PINS 1 AND 2
3	2	2
		3
1		1
			1 = COMMON
GENERATOR		UTILITY	2 = NC
GENERATOR		UTILITY	3 = NO
			3 = NO

SWITCH SHOWN IN THE

UTILITY POSITION

SIDE VIEW

MOUNTING THE AUXILIARY SWITCHES

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.

2.6CONNECTING 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.

2.7RESTORING 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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