Guardian Technologies 004270-3 Electrical Connections, Electrical Junction BOX, Wiring

Section 2 – Installation

QUIETPACT™ 75D Recreational Vehicle Generator

•Use exhaust system parts recommended by Generac. Using unapproved exhaust mufflers and exhaust system parts is the responsibility of the person(s) installing such unauthorized parts.

•Do not terminate the exhaust system under any opening, window, or vent that can be opened or is not permanently sealed from the vehicle interior.

•Exhaust piping must be large enough to prevent excessive back pressure on the generator engine.

•Never tee the generator engine exhaust pipe into the vehicle engine exhaust piping. This causes excessive back pressure on the generator engine. Also, water from one engine can damage the other engine.

•Plan exhaust system installation carefully. Comply with all applicable codes, standards, and regula- tions.

2.6ELECTRICAL CONNECTIONS

Be sure to read Section 1.6.

The following general rules apply to electrical con- nections in a recreational vehicle:

•Qualified electricians who are familiar with applic- able codes, standards, and regulations should install electrical wiring.

•The wiring should comply with codes, standards, and regulations. The National Electrical Code (NFPA 70), and state and local codes apply.

•Switches and circuit breakers should be of a type approved for use in recreational vehicles and must be mounted and installed to prevent damage from road shock.

•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 planed for installation of the generator (NOT on the generator). Route the generator's AC output leads into this junction box through approved flexible conduit. This is the point of first termination for gen- erator AC output leads.

◆2.6.2 WIRING

•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.

•If neutral conductors are used, they must be the same size as other leg wires.

30 Generac® Power Systems, Inc.

•Route power supply conductors from generator AC output leads T1 (red), T2 (white), T3 (black), and the green ground wire through approved flexible conduit to the electrical junction box on the com- partment wall.

If a flexible metal conduit is used between the gen- erator and the compartment junction box, the con- duit end that terminates at the compartment junc- tion box must be vapor-sealed. Flexible metal con- duit 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 T1 (red), T2 (white), and T3 (black) come out of the generator, as shown in Figure 2.14. Leads T1 (red) and T3 (black) are “hot,” while T2 (white) is the grounded neutral lead. There is also a green lead that connects to ground in the junction box of the recreational vehicle.

Figure 2.14 – Generator AC Output Leads

T1 (Red) T2 Neutral (White)

T3 (Black)

T2 Neutral (White)

Ground (Green)

QUIETPACT ™ generators use a four-position termi- nal block to connect between stator power leads and vehicle load leads. This terminal block is accessible by removing the access panel, shown in Figure 2.14. Units are shipped from the factory connected for dual-voltage (120/240 volts AC) output (See Figure 2.15). The stator power windings are connected in series. Lead 11/11A connects to T1 (Red), lead 44/44A connects to T3 (Black), while leads 22 and 33 are grounded and connect to T2 NEUTRAL (White). A "tie bar" connects the two switch handles on line breaker CB1.