? about being plugged into shore power

L

lime4x4

Member
Jul 24, 2007
341
Palmerton,Pa
Boat Info
1986 268 searay weekender
Engines
5.7 vortec alpha
While plugged in to shore power. I assume i can have my batteries on for the 12 volt items. My promarinier 3 bank battery charger when then get power and charge and maintain the batteries. What about my fridge? If i flip the circuit breaker to on will the fridge automaticly switch over to 115 volts even thou the batteries are on?
 
The battery charger when connected to shore power will provide enough power to both charge the battery's and use all the 12 volt lights on the boat.
The fridge should automatically chose AC power if available and 12 volt if not.
:)
 
When your plugged in, run everything and enjoy. Only issue will be amps. If you bring that toaster oven from home and make cookies at the same time your running air and hot water....well, you get the picture. ust need to learn your boat by turning things on one at a time and watching your amp meter.
 
I thought the fridge would take the power from the 12 volt before the 110 since it is actually a 12 volt item. I think the 110 gets stepped down to 12 volt on the back of the fridge.
Anyway, when at the dock and plugged in I run my fridge on 110, and keep the 12 volt breaker for it turned off so no power is going through the 12 volt line to it.
Does your boat have a 12 volt breaker and a 110 breaker? If so, then it is the same as mine. I don't keep them both on at the same time.
 
At my shore power control panel. I have 1 main breaker then 3 other breakers. 1 for the outlets, 1 for the fridge and 1 for the hot water heater. I also have an electric stove but that has no breaker for some reason
 
On my 270 my AC panel has a switch for the fridge so when I am hooked up to shore power i can run it without using the batteries. I also always keep my converter on at all times when I am hooked up to shore power.
 
While everyone is talking about power... What in the world is this fridge switch for on my dash? It doesn't seem to do anything much at all. When I'm on gen or shore power the fridge works off my panel, so just what does this thing do?
 
the one on the dash is to run the fridge on 12 volt power, when away from shore power
 
electricaldoctor said:
The fridge actually does not "step down" the line voltage to 12 volts. There is a relay on the fridge that flips over to 12volts when 120 volts is not present.
Click to expand...
Provided that this fridge is dual voltage; are you certain? I thought there was the relay you speak of along with a transformer(power supply) that when 120VAC is present it will provide the 12VDC through the transformer(power supply) and when off of shore power runs directly off the batteries through a DC power supply?
 
lime4x4 said:
At my shore power control panel. I have 1 main breaker then 3 other breakers. 1 for the outlets, 1 for the fridge and 1 for the hot water heater. I also have an electric stove but that has no breaker for some reason
Click to expand...

With that set up I would turn the fridge switch at the helm off when hooked up to electric at the dock, and turn the fridge switch on the shore power control panel on.
 
I don't have a helm switch either. My fridge is feed off a fused wire off the battery switch located in the engine bay.
 
dwna1a said:
While everyone is talking about power... What in the world is this fridge switch for on my dash? It doesn't seem to do anything much at all. When I'm on gen or shore power the fridge works off my panel, so just what does this thing do?
Click to expand...


Mine also has the switch on the dash panel. Mine is for when I am not "hooked up" to shore power. I use it just to maintain the fridge. You will more than likely drain your battery if you choose to "cool down" your fridge using it that way. My fridge does not "step down" I must flip the switches depending on what I am hooked up to.
 
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