Generac Power Systems 91355 - Manual (Page 21)

CONDUIT
Route the conductors 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 generator
movement.
• If you use metallic conduit, vapor seal the end of the con­
duit where it enters the junction box. Do this because
flexible metallic conduit is not vapor proof along its entire
length.
ISOLATING DIFFERENT POWER
SOURCES
Conductors from the junction box must terminate in a
double pole, double throw transfer switch (Figure 24).
An alternate method for isolating different power
sources is by using an isolating receptacle (Figure 25
on Page 20). Whichever method you use, you must
be certain that both power sources are NOT connect­
ed at the same time.
POWER SUPPLY CORD
The power supply cord must comply with all applica­
ble codes, standards and regulations. It must be large
enough to handle the full amperage to which it will be
subjected.
GROUND FAULT CIRCUIT
INTERRUPTERS
The National Electric Code (NFPA 70, 551-7) requires
that you install ground fault circuit interrupters
(GFCIs) on all external and some internal electrical
receptacles. Contact your manufacturer or dealer for
recommendations.
Figure 24 — Transfer Switch Isolation Method
FLEXIBLE
CONDUIT
FROM
HACR BREAKER_____
VEHICLE
WIRING
2ND AIR
CONOITIONEB
1—1
I
JlHiPÜ
b
-1
VEHICLE A-C
DISTRIBUTION
PANEL
MAIN BREAKER
HACR
BREAKERS
FOR AIR
CONDITIONERS
GFCI
BREAKERS
POWER SUPPLY CORD
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