NewMar Essex 2014, Manual

Page: 60 / 120

2014 Newmar Essex Diesel Pusher 59
Chapter
7
ELECTRICAL FEATURES
GENERAL INFORMATION
There are two electrical systems in your coach. They are the 12 volt DC system and the 110 volt
AC system. Most standard appliances require 110 volt electricity while the majority of the
lighting used in recreation vehicles is powered by 12 volt electricity. The power for the 12 volt
system is supplied by the coach batteries, which are charged by the charge circuit in the inverter,
or the engine alternator while in transit. The power for the 110 volt systems is supplied by the
power cord when the unit is connected to an outside power source or by the generator. The
inverter can also supply 110 volt power. It will transform 12 volt “DC” (Direct Current)
electricity from the batteries into 110 volt AC (“Alternating Current”) power for basic appliances
and accessories.
CAUTION
Failure to turn off the 120 volt appliances when starting or stopping the generator may damage the
transfer switch and/or electrical appliances.
WARNING
Use of “Adapter” cords with the RV shore power cord.
All Newmar units are manufactured with either a 30 or 50 amp electrical breaker box and electrical
system. A unit with a shore power cord that has 3 prongs on it has 30 amp service; if the shore
power cord has 4 prongs, it has 50 amp service.
To provide the correct amperage into the RV, and to assure the operation is as designed, it is
important that they be plugged into the correct type of receptacle.
NEWMAR CORPORATION DOES NOT RECOMMEND USE OF “ADAPTER”, “CHEATER”, OR
“DOG BONE” STYLE CONNECTORS THAT WILL MODIFY THE EXISTING SHORE POWER
CORD TO A DIFFERENT STYLE OF OUTLET. USE OF THIS TYPE OF ADAPTER WILL GREATLY
REDUCE THE AMOUNT OF AVAILABLE CURRENT IN THE UNIT, AS WELL AS CREATES THE
POTENTIAL FOR ELECTRICAL FAILURE AND / OR FIRE. NEWMAR CORPORATION CANNOT
ASSUME LIABILITY FOR FAILURES OCCURRING TO THE RV, ITS ELECTRICAL SYSTEM, OR
ANY OF ITS COMPONENTS FROM THE USE OF ANY ELECTRICAL ADAPTER.
110 VOLT AC SYSTEM
The 110 volt AC system in your unit is designed to provide safe power for operating AC powered
appliances and accessories in your unit. It is wired as a 50 amp, single phase system. Incoming
power is supplied to your unit from one of three sources:
Shore Power Cord