Holiday 2002 NEPTUNE, Owner'S Manual

Page: 233 / 344

Electrical Systems - House
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2 0 0 2 N E P T U N E
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The Energy Management System is easily identified by the remote display
panel located in the hallway.
The 50 Amp Smart EMS consists of two elements: the display panel and
the bedroom distribution panel. The display panel is mounted in the hallway.
The distribution panel, located in the bedroom, is a completely self-contained
120/240 Volt power distribution and energy management system intended to be
used in recreational vehicles. It is housed in a sheet metal enclosure with
removable front panel. It provides circuit protection for all the 120 Volt AC
loads in the motorhome and a system of energy management to minimize the
over-loading and tripping of circuit breakers.
Circuit Breakers:
The distribution panel offers slots for eight single or dual, standard
120 Volt circuit breakers. Two of these breakers, located in the two
center positions, is the 50 Amp breaker that acts as the main input pro-
tection for each of the lines supplying the remainder of the branch
breakers (up to 12).
Energy Management:
The 50 Amp Smart EMS automatically senses the available power to
the motorhome. It determines whether it is connected to a 120 Volt AC
30 Amp shore power source, 50 Amp shore power source or generator
source. Depending upon available power, it controls the operation of
six possible loads as indicated on distribution panel. These may be any
type load, but are typically heavier loads; those whose use can be
"postponed" until a time when current is available for their use. If the
available power source is 120 Volt AC 30 Amp shore power it
attempts to keep the total 120 Volt current draw to less than 30 Amps.
Operation:
If 120 Volt AC is not available at the
distribution panel, L1 or L2 outputs, the
system shuts itself off. This feature is
intended to prevent the system from
drawing current from the 12 Volt DC
battery supply when not in operation.
When 120 Volt AC power is applied the
system automatically powers up and deter-
mines the nature of the power source. On
50 Amp shore power, the load meter will
not indicate Amps load.
Energy
Management
System - 50 Amp
(Optional)
With 50 Amp Input.
OM060082B