8
Curtis PMC 1204/1205 Manual
HARDWARE INSTALLATION
Keyswitch
The vehicle should have a master on/off switch to turn the system off
when not in use. A keyswitch is typically used for this purpose.
Polarity Protection Diode
For polarity protection, a diode should be added to the control circuit.
This diode must be sized appropriately for the maximum total contactor
coil currents.
Control Wiring Fuse
To protect the control circuitry from accidental shorts, a small fuse
(typically 10 amps) connected in series with the B+ feed to the control
circuitry wiring is recommended.
Power Wiring Fuse
To protect the power wiring circuit, a fuse appropriate for the controller’s
rated current (see Appendix C) is recommended.
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