Two sizes of knockouts have been provided: a 34mm knockout for the 50 Amp and a 27mm
knockout for the 30 Amp power cord. Eight 22mm holes are provided in the DC section for the
12 VDC loads. Wire clamps or strain reliefs must be used to tightly secure the wires wherever
the wires enter the enclosure. Also provided is a series of built-in 120 VAC Romex strain reliefs
and should only be used with 10-2 through 14-2 wire, placing one wire per strain relief opening.
Wiring the AC Breakers
Make sure no AC power is coming into the RV from either the Shore Power cord or an
on-board generator.
Determine the proper size breakers for the loads the WF-8930/50 Series
Distribution Center will be powering. You can use either single or duplex breakers, or a
combination of both. We recommend that all the breakers used be of the same brand. Two
main breakers and up to 12 branch breakers can be installed in the WF-8930/50NP when using
duplex breakers. One Main breaker and up to 6 Branch breakers can be installed in the
WF-8930/50NP-30, again when using duplex breakers. Refer to the tables on pages 4 and 5 for a
selection of approved breakers. The Main breakers should be installed in the center position. See
the wiring diagrams below. A hold down clip is provided to keep the breaker securely in place.
The Shore cord should be routed through one of the large knockouts in the back of the wiring
compartment as indicated above and secured with a Romex clamp. For 30 Amp service, the
Black (Hot) wire is connected to the 30 Amp Main breaker. For 50 Amp service, the Black wire
is connected to one of the 50 Amp Main breakers and the Red wire is connected to the other
50Amp main breaker as shown. The White (Neutral) wire is connected to the Neutral Terminal
bar at the bottom of the wiring compartment. The Green (Ground) wire is connected to the
Ground Terminal bar also located at the bottom of the compartment.
Route the Romex leads for the Branch circuits through the Strain Reliefs in the back of the
wiring compartment. In a similar fashion, connect the Black wire to the Branch breaker and the
White and Green wires to the appropriate Terminal bar.
When wiring has been completed, make sure all terminals are torqued to the specifications listed
on the back of the door assembly.
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