Product Manual B

3. Wiring5-2019

FIGURE 9. SECURE THE POWER CABLES

3.2 Control Connections

Connections of standard and optional control wiring are made at terminal blocks TB1, TB2, and TB3; and

directly at the (optional) auxiliary relays.

TB1 is located near the top left side on the front of the transfer switch. TB2 is located below TB1, near the

bottom left side of the transfer switch. TB3 and auxiliary relays are located on the DIN rail.

3.2.1 Connecting Transfer Switch to Genset

WARNING

AC voltages and currents present an electrical shock hazard that can cause severe personal

injury or death. Disconnect the AC power source.

Wire size depends on the distance and the type of battery charger installed in the transfer switch. Lead

size must be increased if a battery charger is installed in the switch.

• With no battery charger, all leads between the generator set and transfer switch: Use Column A.

• With 2-Amp charger, maximum voltage drop of 1.5 volts, leads B+ and GND: Use Column B.

• With 12/15-Amp charger, maximum voltage drop of 1.5 volts, leads B+ and GND: Use Column C.

• With 2-Amp charger, maximum voltage drop of 0.75 volts, leads B+ and GND: Use Column D.

• With 12/15-Amp charger, maximum voltage drop of 0.75 volts, leads B+ and GND: Use Column E.

• To return a fully discharged battery to 100% of its Ampere-hour rating within 24 hours: Use Column