Electrical System, Electrical Connections

Section 6 Electrical System

WARNING

Hazardous voltage. Moving rotor.

Can cause severe injury or death.

Operate the generator set only when all guards and electrical enclosures are in place.

Electrical backfeed to the utility. Hazardous backfeed voltage can cause severe injury or death. Connect the generator set to the building/campground electrical system only through an approved device and after the building/campground main switch is opened. Backfeed connections can cause severe injury or death to utility personnel working on power lines and/or personnel near the work area. Some states and localities prohibit unauthorized connection to the utility electrical system. Install a transfer switch to prevent interconnection of the generator set power and other sources of power.

6.1 Electrical Connections

Have qualified electricians make electrical connections. Connections to the load leads, battery, and remote switch panel complete the installation. To prevent unintentional starting, make final connections to the battery only after making all other connections.

The following paragraphs provide details on each connection. Refer also to the wiring diagram in the operation manual.

Securely support or harness all wiring to the generator set to prevent abrasion. Provide additional support for the wiring to prevent exposure to the exhaust system and drippage of fuel, oil, or grease. Allow at least a 51 mm (2 in.) clearance between the electrical wiring and hot exhaust parts. Do not locate the wiring directly below or near the fuel system parts or the oil-fill tube.

The following paragraphs cover some other points to consider when making AC load connections.

Note: At the time of installation, make the wiring connections accessible for inspection and service.

6.2 AC Load Lead Connections

Routing. Each generator set has four color-coded load leads. The black leads (L1 and L2) are hot, the white lead (L0) is neutral, and the green lead is the hazard ground. See Section 8 for the AC load lead connections. Route the load leads directly from the junction box to the vehicle AC circuit or transfer switch connection. Route the load leads of all installations through flexible conduit from the generator end bracket to the junction box. Keep the load lead junction box accessible for service and inspection.

Note: Keep the load lead circuit away from the generator fuel and exhaust system components.

Note: Use field-supplied wiring capable of withstanding temperatures of 75_C (167_F).

Connect the neutral of the AC circuit in the vehicle to lead L0 (white or gray). If the vehicle uses equipment ground-type plugs and receptacles (3-pronged), connect the green wire to the U-shaped pin. On vehicles that also have provisions for using an outside AC power source, completely isolate the neutral as well as the hot (black) leads from the generator set when switching power to the outside source. See Figure 6-1.

TP-6335 9/04

Electrical System 13