Installation Manual 7
Connect the Electrical Components
Electrical current necessary:
DC Operation 12 volts DC voltage (10.4 volts min. - 15.4 volts max.)
Make no changes to any of the electrical wiring supplied with the refrigerator. Any changes that you would make to the electrical wiring
will void the warranty.
Connect the 12 volt DC supply:
To reduce the risk of electrical interference from other DC appliances and induction from voltage spikes:
- The refrigerator must have an independent ltered 12volt DC supply.
- Route the DC power supply wires including the fuses directly from the power source to the refrigerator using either Option A or Option
B shown below.
Option A
Use a battery in parallel, in-between the refrigerator and the battery
charger or an electrically ltered power converter. A fuse or circuit
breaker should be wired as close to the power supply as possible.
Option B
Wire the refrigerator directly to the electrically ltered DC power
converter. The power converter must have a maximum DC ripple
voltage less than or equal to 250mV. A fuse or circuit breaker
should be wired as close to the power supply as possible.
- To connect the DC power supply wires, it is recommended to install 1/4” insulated female spade terminals or Stocko connector
W2041.100G to the connecting wire. (See Art 02740)
- Alternatively, the connector may be cut o and the connection can be wired via closed-end
connectors (bell cap) or crimp connectors. If the factory connector is cut o, proper care
should be taken by the OEM to assure that the connection is made properly. Norcold is not
responsible for damage caused by improper capped or crimped connections.
- As the distance from the power source to the refrigerator increases, the correct AWG wire
size also increases. Using longer than recommended wire lengths increases voltage drop and
increases the risk that the refrigerator may not turn back on after a drop in DC voltage. The
voltage required to start the refrigerator is initially 10.9 volts. In order to prevent completely
draining the battery, the refrigerator will automatically shut-o when the DC supply voltage falls
below 10.4 volts. The refrigerator will not restart until the DC supply voltages increases to 11.8 volts. The OEM should assure that the
draw for all DC powered equipment does not drop below 10.9 volts when the refrigerator is attempting to power on.
(RED)
(WHITE)
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ART 02740
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