Table of Contents
Advertisement
• Use exhaust system parts recommended by the
manufacturer. 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.
2.6
ELECTRICAL CONNECTIONS
Be sure to read the "Generator AC Connection
System" section.
The following general rules apply to electrical connec-
tions in a recreational vehicle:
• Qualified electricians who are familiar with appli-
cable 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 flex-
ible conduit. This is the point of first termination for
generator 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.
30
Section 2 – Installation
Recreational Vehicle Generator
• If neutral conductors are used, they must be the
same size as other leg wires.
• 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
generator and the compartment junction box, the
conduit end that terminates at 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 iso-
lation receptacle. Connecting to a transfer switch
or isolation receptacle must prevent vehicle electri-
cal circuits from being connected to two different
power supplies at the same time (such as, genera-
tor and dockside power).
• Conductors must be rated 221° F (105° C) or must
be of a larger conductor size.
When connecting vehicle load leads, the following
rules apply:
• Connect 120-volt, single-phase, 60-Hertz, AC elec-
trical loads, requiring up to the trip rating of cir-
cuit breaker CB1, across AC output leads T1 (red)
and T2 (white).
• Connect 120-volt, single-phase, 60-Hertz, AC elec-
trical loads, requiring up to the trip rating of
circuit breaker CB1A, across AC output leads T3
(black) and T2 (white).
• Try to keep the load balanced between the two cir-
cuit breakers and the stator windings.
• The neutral line (T2, white) on all units is a
grounded neutral.
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.
These generators use a four-position terminal 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-circuits (120 volts AC) output (See Figure 2.15).
Two stator power windings are used, with each wind-
ing capable of supplying half of the unit's rated watt-
age/amperage capacity. The circuit from each winding
is protected against overload by a line breaker (CB1
and CB1A). Line breakers CB1 and CB1A have a trip
rating of 40 amps.
Advertisement
Table of Contents
