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TK 56917-11-MM-EN
DC Power Disconnect Switch
A DC power disconnect switch is located on the side of the enclosure. The switch is used to disconnect all DC battery
voltage to the power inverter. Protection to the inverter is provided by the 150 Amp fuse inside the enclosure connected
to the switch.
AC Output Power Cable
The power inverter is equipped with a AC output power cable and a 20 Amp in line fuse. This output cable is connected
to the EPJ power cable and routed to the ground fault circuit interrupter (GFCI) outlet located inside the truck box or
trailer. When the EPJ is connected to this GFCI outlet, and the EPJ charging system is asking for power, the EPJ
batteries will be recharged, assuming inverter operating parameters are met. It is normal operation for no power to be
available at the GFCI outlet when operating parameters are not met, which typically is when source batteries are at a
low voltage.
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ntt:: The inverter’s AC power cable must be connected only to a single GFCI outlet. No other electrical
connections should be made to this cable.
GFCI Outlet
A GFCI outlet is typically located inside the cargo box on a side wall near the door opening. This allows easy access for
EPJ for charging. A yellow nameplate identifies the GFCI outlet. A weatherproof cover protects the GFCI outlet when
not in use.
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ntt:: The GFCI is specific to this application. If a replacement GFCI is necessary, only Thermo King P/N 424456
can be used for proper inverter operation.
Figure 4. Typical Recessed GFCI with Weatherproof Cover Shown
RCS1475-1
Figure 5. Thermo King GFCI P/N 424456 Shown
RCS1198-3