NewMar London Aire 2021, Руководство пользователя

Страница: 71 / 204

© 2020 Copyright Newmar Corporation. All rights reserved. For the most up-to-date version of this content, and for more product-specific information, please refer to Newgle.
66
ELECTRICAL
INVERTER POWER
This type of power starts
at the battery bank. The
battery bank supplies 12
Volt power through cables
to the inverter, which
uses the 12 Volt direct
current to produce 120
Volt alternating current.
The inverter performs this
action by using a transformer to increase the voltage
and modify the higher voltage into a useable alternating
current power. Power then goes to the inverted sub
panel, which is dispersed through the individual breakers
to the outlets or appliances.
The inverter may provide battery charging while 120
Volts is supplied via the generator or shore power. The
inverter performs this action by using the transformer to
decrease the voltage and rectify the alternating current
into useable direct current voltage. This is regulated by
internal sensing circuitry based upon the battery bank’s
state of charge and several other factors, depending on
the coach’s particular inverter brand and type.
SHORE POWER
Most RV parks provide 30 Amp,
120 Volt at the site; however, many
parks also provide 50 Amp, 240
Volt service to accommodate the
electrical needs of newer and larger
coaches. Shore power is supplied
to the coach via a power cord. Two
sizes of power cords are found in
Newmar coaches: 50 Amp and 30
Amp. The 50 Amp cords are made
up of four conductors #8 stranded wire and a molded
plug. The 30 Amp cords are made up of three conductors
#10 stranded wire and a molded plug.
Shore power enters through the 30 or 50 Amp power
cord to the power cord reel (if equipped). From the power
cord reel, it travels to the transfer switch and then to the
main breaker box where it is dispersed to the individual
circuits to supply power to hard-wired components such
as air conditioners, water heaters, etc. and then to the
inverter (if equipped).
The inverted circuits move from the inverter’s internal
transfer switch to the inverter subpanel (a smaller breaker
box). From the subpanel, the power circulates to the
individual breakers and to the electrical outlets and
appliances.
Newmar Corporation does not recommend use
of adapter, cheater, or dog-bone style connectors
that will modify the existing shore power cord to a
di ff erent style of outlet. Use of this type of adapter
will greatly reduce the amount of available current in
the unit, as well as create the potential for electrical
failure and/or fire.
IMPORTANT
!
1.
3.
2.
SHORE POWER ADAPTERS
If an adapter is used, there are three common sizes of
power cord adapters available to adjust to a smaller
amperage outlet:
1. 30 amp to 20 amp
2. 50 amp to 20 amp
3. 50 amp to 30 amp
It is important to understand the risks involved and the
possible e ff ects of using adapters in conjunction with your
coach. Some of these risks and possible e ff ects include:
•
Melted or damaged adapters causing poor
connection (or no connection at all)
•
Melted or damaged 30 or 50 Amp plugs causing
fluctuations in voltage that may damage electronics
•
Insu ffi cient amperage causing the tripping of a
breaker at the post or a limited use of appliances
Low voltage can also be caused by use of adapters, long
extension cords, or extension cords with an insu ffi cient
wire size.
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.
IMPORTANT
!
AUTOMATIC TRANSFER SWITCH
Current coaches with a generator will also have a transfer
switch installed in the cord compartment. An automatic
transfer switch converts two inputs and connects them to
a single common output.
The shore power cord is connected to one of the inputs,
while the generator is connected to the transfer switch’s
second input.