Thetford DC0788 Series - Manual (Page 10)

10
Connect the 12 volts DC supply
This refrigerator operates on 12/24 volts DC current from a battery.
CAUTION: Only connect the refrigerator directly to the battery. Because they
often generate high voltage pulses and cause transistor defects in the inverter, no
other switches, lead wires, or electrical equipment should share the wiring between
the refrigerator and battery.
When using either a converter or a battery charger, make sure that they are connected in
parallel between the battery and the refrigerator. Do not use a converter or battery charger
to supply the DC power directly to the refrigerator because these two devices do not
supply filtered DC power (See Art01521).
As the distance from the vehicle battery to the refrigerator increases, the correct AWG wire
size also increases. If he wire size is too small for the distance, a voltage drop occurs.
The voltage drop decreases the cooling performance of the refrigerator.
1. Norcold recommends that you use the following wire and fuse sizes:
- Measure the distance from the vehicle battery to the refrigerator:
- If the distance is less than 12 feet, use 16 AWG wire and a 10 Amp fuse.
- If the distance is between 12 and 20 feet, use 14 AWG wire and a 10 Amp fuse.
- If the distance is more than 20 feet, use 12 AWG wire and a 10 Amp fuse.
Art01521
Refrigerator Refrigerator
Refrigerator Refrigerator
INCORRECT INCORRECT
CORRECT CORRECT
Battery charger or
AC/DC converter etc.
Battery charger or
AC/DC converter etc.
Transisterized
DC power supply
Transisterized
DC power supply