Peter, I do not know what the input is, but I would guess that it is probably
1/4 or 1/5 hp compressor, this would be about 150 to 200 watts. The amount of
run time would be dependant on ambient temperature. In the tropics, I would
guess almost 50% run time. Good inverters are about 90% efficient. The
minimum would be a Hart 1000, pref 1500 watt unit, because of the startup
being at least three times the running load. 30 amps from your 12 volt system
running would be a conservative estimate. I have a sailboat (hopefully just
sold) with holding plates freezer and 110/12 volt refer. The refer runs at 6
amps 12 volts and runs about 50% of the time in the tropics. I can run the
110 volt (I have both engine and 110 freezer) off my inverter (1/3 hp on the
holding plate compressor) This uses about 45 amps running and it is no
problem with the main alternator putting out up 120 amps ( I do not like to
run it over 80 amps).
Hope that this gives you some idea.
Bob
Peter, I do not know what the input is, but I would guess that it is probably
1/4 or 1/5 hp compressor, this would be about 150 to 200 watts. The amount of
run time would be dependant on ambient temperature. In the tropics, I would
guess almost 50% run time. Good inverters are about 90% efficient. The
minimum would be a Hart 1000, pref 1500 watt unit, because of the startup
being at least three times the running load. 30 amps from your 12 volt system
running would be a conservative estimate. I have a sailboat (hopefully just
sold) with holding plates freezer and 110/12 volt refer. The refer runs at 6
amps 12 volts and runs about 50% of the time in the tropics. I can run the
110 volt (I have both engine and 110 freezer) off my inverter (1/3 hp on the
holding plate compressor) This uses about 45 amps running and it is no
problem with the main alternator putting out up 120 amps ( I do not like to
run it over 80 amps).
Hope that this gives you some idea.
Bob
