Kohler 12RESM1 manual Electrical Connections, AC Connections

9.Connect and turn on the new fuel supply.

10.Check that the generator set master switch is in the OFF position.

11.Reconnect the generator set engine starting battery leads, negative (--) lead last.

12.Reconnect power to the battery charger.

13.Start the generator set by moving the generator set master switch to the RUN position.

14.Check for leaks using a gas leak detector.

15.Move the generator set master switch to the OFF/ RESET position to shut down the generator set.

To convert from LP vapor to natural gas, remove the fuel orifice and connect the DSAI leads together.

1.8Electrical Connections

WARNING

Hazardous voltage.

Backfeed to the utility system can cause property damage, severe injury, or death.

If the generator set is used for standby power, install an automatic transfer switch to prevent inadvertent interconnection of standby and normal sources of supply.

Grounding electrical equipment. Hazardous voltage can cause severe injury or death. Electrocution is possible whenever electricity is present. Ensure you comply with all applicable codes and standards. Electrically ground the generator set, transfer switch, and related equipment and electrical circuits. Turn off the main circuit breakers of all power sources before servicing the equipment. Never contact electrical leads or appliances when standing in water or on wet ground because these conditions increase the risk of electrocution.

Electrical backfeed to the utility. Hazardous backfeed voltage can cause severe injury or death. Install a transfer switch in standby power installations to prevent the connection of standby and other sources of power. Electrical backfeed into a utility electrical system can cause severe injury or death to utility personnel working on power lines.

NOTICE

Canadian installations only. For standby service connect the output of the generator set to a suitably rated transfer switch in accordance with Canadian Electrical Code, Part 1.

Have an authorized distributor/dealer or a licensed electrician make the following electrical connections. Verify that the electrical installation complies with the National Electrical Code (NEC) and all applicable local codes. Ground the generator set from the GRD terminal inside the controller compartment according to applicable codes.

1.8.1AC Connections

The generator set is equipped with a field-connection terminal block located in the air inlet area near the junction box. See Figure 1-19 and Figure 1-20. Also see Section 2, Wiring Diagrams.

Refer to the transfer switch specifications and Figure 1-20 for the acceptable cable sizes. Route AC leads through flexible conduit. Ensure that the leads and conduit do not interfere with the operation of the generator set or obstruct the service areas.

The electrical installation must comply with the National Electrical Code (NEC) and all applicable local codes.

Connection Procedure

See Figure 1-20. Leads have been factory-installed from the junction box to the terminal block for easier field wiring. Refer to the decal near the terminal block for connections.

1.Connect the leads from the transfer switch emergency source lugs to the L1 and L2 connections on the generator set terminal block.

2.Connect the neutral (L0) and ground (GRD) leads from the ATS and the main panel to the corresponding connection points on the terminal block. See Section 1.8.3, Grounding.

3.The terminal block kit includes 120VAC receptacles for the battery charger and optional carburetor heater. Connect utility power to the terminal block as shown. Connect to a circuit that is supplied by the generator set if utility power is lost.

22 Section 1 Installation TP-6516 4/09