Generac 004700-0 owner manual Electrical Junction Box, Wiring, Generator Ac Connections, Conduit

Section 2 – Installation

QUIETPACT 40G Recreational Vehicle Generator

•Wiring must be of adequate size, have approved insulative qualities and be properly supported.

•Conduit and wire openings into the generator com- partment (if used) must be vapor-sealed to prevent entry of flammable, explosive or poisonous gases into the vehicle.

◆2.6.1 ELECTRICAL JUNCTION BOX

Install an approved, square electrical junction box with a blank cover on the interior or exterior wall of the area you plan to install the generator (NOT on the generator). Route the generator's AC output leads into this junction box through approved flexible con- duit. This is the point of first termination for genera- tor AC output leads.

◆ 2.6.2 WIRING

Figure 2.13 – Generator AC Output Leads

483.1

REMOTE PANEL

CONNECTOR

AC OUTPUT

HARNESS

FUEL FILTER

BATTERY

CONNECTIONS

•Wiring should be of stranded copper to reduce the chance that vibration may cause breakage.

•Wire gauge size should be large enough to handle at least 115 percent of the installed generator's rated maximum current.

•Neutral conductors must be the same size as other leg wires.

•Route power supply conductors from generator AC output leads (white), (black) and the green ground wire through approved flexible conduit to the elec- trical junction box on the compartment wall.

If flexible metal conduit is used between the gener- ator and the compartment junction box, the con- duit end that terminates the compartment junction box must be vapor-sealed. Flexible metal conduit is NOT vapor tight along its entire length.

•From the junction box, route power supply wires through approved conduit to either (a) double- pole, double-throw transfer switch, or (b) approved isolation receptacle. Connecting to a transfer switch or isolation receptacle must pre- vent vehicle electrical circuits from being connect- ed to two different power supplies at the same time (such as generator and dockside power).

•Conductors must be rated 221° F (105° C) or must be of a larger conductor size.

◆2.6.3 GENERATOR AC CONNECTIONS

Generator AC output leads (BLACK) “hot” and (WHITE) grounded neutral come out of the generator as shown in Figure 2.13. There is also a green lead that connects to ground in the junction box of the recreational vehicle.

Leads BLACK to WHITE are protected against over- load by a 30-amp circuit breaker (CB1). Use this line- to-neutral connection separately to operate 120-volt, single-phase, 60 Hertz, AC loads requiring up to 3,600 watts (3.6 kW) of power.

Do NOT connect electrical loads in excess of any circuit breaker rating or you will develop problems with circuit breaker tripping, which causes a loss of AC output. Also, do NOT exceed the generator's rated wattage capacity. Add the watts or amperes of all lighting, appli- ance, tool and motor loads the generator will operate at one time. This total should be less than the unit's rated wattage/amperage capaci- ty.

◆2.6.4 CONDUIT

Route the connections between the generator and the junction box through approved, flexible conduit. The following general rules apply:

•Cut wiring to the required length and allow extra wire for junction box connections.

•Carefully prepare conduit ends to prevent sharp edges from cutting through wiring insulation.

•Route conduit so it does not interfere with genera- tor movement.

•If you use metallic conduit, vapor seal the end of the conduit where it enters the junction box. Do this because flexible metallic conduit is not vapor- proof along its entire length.

Generac® Power Systems, Inc. 29