Thepips
Trade Member
I've been working on my Monaco Knight over the weekend and got to thinking about reducing the amount of LPG we get through. One of the biggest users seems to be the fridge. It's a big 4 door Dometic.
It's not on the inverter circuit but I can't think of a good reason why it shouldn't be. The fridge has a 5amp fuse so at 110volt can't be drawing more than 550watts which is a lot less than the microwave. The inverter is 3000 watts and I've 4 x 6 volt 125 a/h batteries. Ok I can see you wouldn't want to run it on inverter all the time but why not while driving? Or for a short time while on the ferry?
By my reckoning the batteries should last at least 3-4 hours. If I'm reading the manuals correctly the engine alternator puts out 100amps which charges all of the chassis and leisure batteries.
It could be quite sophisticated with a relay operated changeover switch so when the engine is running the fridge is powered by the inverter. Turn the engine off, the relay disengages and the fridge loses power so automatically switches to gas. Start the gennie or go onto hookup and the fridge would run of that.
Will it work? or I am missing something fundamental?
Cheers
Doug
It's not on the inverter circuit but I can't think of a good reason why it shouldn't be. The fridge has a 5amp fuse so at 110volt can't be drawing more than 550watts which is a lot less than the microwave. The inverter is 3000 watts and I've 4 x 6 volt 125 a/h batteries. Ok I can see you wouldn't want to run it on inverter all the time but why not while driving? Or for a short time while on the ferry?
By my reckoning the batteries should last at least 3-4 hours. If I'm reading the manuals correctly the engine alternator puts out 100amps which charges all of the chassis and leisure batteries.
It could be quite sophisticated with a relay operated changeover switch so when the engine is running the fridge is powered by the inverter. Turn the engine off, the relay disengages and the fridge loses power so automatically switches to gas. Start the gennie or go onto hookup and the fridge would run of that.
Will it work? or I am missing something fundamental?
Cheers
Doug