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• 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.
5.7.3 GENERATOR AC CONNECTIONS
Generator AC output leads T1 (red), and T3 (black)
come out of the generator as shown in Figure 5.15.
Leads T1 (red) and T3 (black) are "hot." There is also
a green lead that connects to ground in the junction
box of the recreational vehicle.
Figure 5.15 – Generator AC Output Leads
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.
5.7.4 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.
30 Generac
®
Power Systems, Inc.
Section 5 – Installation
QUIETPACT 50 and 70 Recreational Vehicle Generators
• 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.
5.7.5 ISOLATING DIFFERENT POWER
Connections from the junction box must terminate in
a double-pole, double-throw transfer switch (Figure
5.16, Page 31). An alternate method for isolating dif-
ferent power sources is by using an isolating recepta-
cle (Figure 5.17, Page 31). Whichever method you
use, you must be certain that both power sources are
NOT connected at the same time.
5.7.6 POWER SUPPLY CORD
The power supply cord must comply with all applic-
able codes, standards and regulations. It must be
large enough to handle the full amperage to which it
will be subjected. (See page 33 for illustration.)
T3
T2
T1
5.7.7 GROUND FAULT CIRCUIT
Green
(Ground)
The National Electrical Code (NFPA 70, article 551)
requires that you install ground fault circuit inter-
rupters (GFCIs) on all external and some internal
electrical receptacles. Contact your manufacturer or
dealer for recommendations.
5.8
BATTERY INSTALLATION
5.8.1 RECOMMENDED BATTERY
Install a battery that meets the following require-
ments:
• The battery must be a 12-volt, automotive type
storage battery.
• For prevailing ambient temperatures above 32° F
(0° C), use a battery rated 70 amp-hours and capa-
ble of delivering 400 cold-cranking amperes.
• For prevailing ambient temperatures below 32° F
(0° C), use a battery rated 95 amp-hours and capa-
ble of delivering 400 cold-cranking amperes.
If the battery is to be used to power other vehicle
accessories, as well as start the generator, you may
need a battery with a larger capacity.
SOURCES
INTERRUPTERS
NOTE:
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