Thetford N400 Series Installation Manual - Manual (Page 7)

Installation Manual 7
Connect the Electrical Components
NOTE: The current draws are nominal values.
N400 models
AC Operation 120 volts AC voltage
(108 volts min. - 132 volts max.)
Current Draw 1.8 Amps at 110 volts AC
2.0 Amps at 120 volts AC
Propane Gas
Operation 12 volts DC control voltage
(11.5 volts min. - 15.4 volts max.)
Current Draw .37 Amps at 12 volts DC
.42 Amps at 15 volts DC
DC Operation 12 volts DC
(N400.3 only) (11.5 volts min. - 15.4 volts max.)
Current Draw 14.1 Amps at 12 volts DC
16.5 Amps at 14 volts DC
N510 models
AC Operation 120 volts AC voltage
(108 volts min. - 132 volts max.)
12 volts DC control voltage
(10.5 volts min. - 15.4 volts max.)
Current Draw 1.79 Amps at 110 volts AC
1.92 Amps at 120 volts AC
Propane Gas
Operation 12 volts DC control voltage
(11.5 volts min. - 15.4 volts max.)
Current Draw .37 Amps at 12 volts DC
.42 Amps at 15 volts DC
DC Operation 12 volts DC control voltage
(N510.3 only) (10.5 volts min. - 15.4 volts max.)
Current Draw 14.1 Amps at 12 volts DC
17.0 Amps at 15 volts DC
This refrigerator operates on both AC and DC electrical
sources. Operation out of these limits may damage the
refrigerator’s electrical circuit parts and will void the warranty.
2. Change the position of the travel latch:
- Remove the screws from the travel latch [5].
- Put the travel latch on the opposite end of the refrigerator.
- Attach the travel latch with the screws.
WARNING: The rear of the refrigerator cooling system
has hot surfaces and sharp surfaces that can damage
electrical wiring. Make sure that there is a good clear-
ance between all electrical wiring and the cooling system
of the refrigerator. Position any electrical wiring within the
refrigerator enclosure opposite the burner side of the
refrigerator. Do not put any electrical wiring through the
roof exhaust vent. Failure to correctly position electrical
wiring can result in electrical shock or fire.
Connect the 120 volt AC supply:
WARNING: Connect the AC power cord only to a
grounded three-prong receptacle. Do not remove the
round ground prong from the power cord. Do not use a
two-prong adapter or an extension cord. Operation of the
refrigerator without correct ground can cause dangerous
electrical shock or death if you are touching the metal
parts of the refrigerator.
Put the AC power cord into a grounded three-prong receptacle:
- Make sure the receptacle is positioned within easy reach of
the lower intake vent.
- Make sure the power cord does not touch the burner cover,
the flue pipe, or any hot component that could damage the
insulation of the power cord.
Connect the 12 volt DC supply (model N400.3):
As the distance from the vehicle battery to the refrigerator
increases, the correct AWG wire size and fuse size also
increases. If the wire size is too small for the distance, a
voltage drop occurs. The voltage drop decreases the output of
the system heater and causes poor cooling performance.
1. Determine the min. wire size and the max. fuse size to use:
WARNING: If you use an incorrect wire size and/or fuse
size, electrical fire can result.
- Measure the distance from the vehicle battery to the
refrigerator:
- If the distance is 0 - 20 feet, use a minimum of 10 AWG
wire and a 30 amp max. fuse.
- If the distance is over 20 feet, use a minimum of 8 AWG
wire size and a 40 amp max. fuse.
- If the wire is larger than the min. size, use the correct fuse
per RVIA A119.2 standard or local codes.
The wire connections must be clean, tight and free of corrosion.
If any of these items are not correct:
- A voltage drop to the refrigerator will occur.