MJM Yachts 36z Express - Manual (Page 34)

6.3
ELECTRICAL SYSTEM
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.
AC Panel #2 (aft or right half of panel) 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 stern INLET #2 which by-passes the inverter and goes right to AC Panel #2.
However, they can also be powered from shorepower Inlet #1 using the TRANSFER feature of
the panel so long as one doesn’t try to use the Microwave and/or Cooktop or both the Water
Heater and AC at the same time.
CHARGING The main HOUSE battery switch can be switched OFF when the boat is not used,
and the batteries will still accept a charge from 120V SHOREPOWER through the battery
charger. Obviously, to keep the Refrigerator going, you’d have to leave the main HOUSE battery
switch ON as well as the DC Refrigeration breaker switch ON.
If present on your AC Panel 1, leave
“Inverter/Charger” breaker ON. If you are
leaving the boat plugged into shore-power
and you wish to turn off all DC loads but still
be able charge batteries. Turn off the top
Main DC rocker switch above the DC panel.
VICTRON INVERTER/CHARGER
The Victron 12/3000/120-50 3KW QUATTRO
Inverter Charger is fully automatic. Under
normal circumstances there is no need for
adjustment or operation besides switching on
and off.
Disconnecting shore power with INVERTER
switch left ON may cause discharge of the
house battery bank. Best to leave the switch
shown at right in the middle OFF position when leaving the boat on a mooring or stored without a
shorepower hookup. The panel is the face of the Victron unit on top of the fuel tank in the starboard
pilothouse settee locker.
The DIGITAL MULTI CONTROL
shown at right in the “Charge” mode, is a digital
remote panel switches on and off the unit. (See
Victron Operators Manual.
The 36z uses a combination inverter/charger
(in a single unit). When AC power is sourced
from Shorepower or the Generator the unit can
charge both the house battery bank and the
engine start batteries with the toggle switch UP.
INVERTING See Victron Operators Manual
CHAPTER 6 28