MJM Yachts 40z Express - Manual (Page 29)

CHAPTER 6
DC Breaker Panel This custom
MJM panel includes s digital readout that
will show voltage and amperage drain on
top. The main house battery and genset
breaker switches are in the upper right.
The breaker switches for all the 12v DC
equipment on the boat are clearly labeled
and some spares are available for later
installations.
AC Breaker Panels The main AC
Engine battery breakers are located at the top
right over AC Panel #2.
AC Panel 1 (left half) includes breakers for
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When the Shore 1 shore-power cable is
attached turn OFF the Inverter on the
Mastervolt panel and turn ON the
Charger. Then turn ON the Shore 1
breaker so Shore 1 will supply AC power to
equipment on AC Panel #1$and with the
Transfer Switch ON..also to AC Panel #2,
.
AC Panel Shore 2 (right) is designed for
those items having too much load for the
batteries and inverter, thus requiring either
shorepower or the generator to supply AC
power. The high amperage water heater and
air-conditioning systems are best supplied
with a shorepower cord to inlet #2 which
bypasses the inverter and goes right to AC
Panel #2.
The AC Transfer switch allows either Shore
1 or generator to power the AC Panel #2
circuits. If this function is utilized, be aware
that using too many AC appliances at once
will cause a shorepower breaker to blow.
Fresh Water Tank Level! This is shown in
the lower right and is activated when the
fresh water DC breaker is ON. Otherwise,
you may think you have run the tank dry!
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ELECTRICAL SYSTEM