Forum Discussion
pianotuna
Jun 20, 2019Nomad III
Hi,
The best way to be able to run the microwave for 2 minutes while the roof air conditioner is on is to have a hybrid inverter charger. One that does load support.
Another way to do this is to do "double conversion". Before I had a hybrid inverter, I would plug my RV into the inverter. I would "feed" only the converter from shore power.
One could move the AC breaker to its own box and have an auxiliary shore power cord to feed it. I chose to do that for the electric water heater. In fact I simply used plugs so there is no breaker in the RV for this auxiliary shore power cord. The heater draws 1400 watts so it is less than the 80% continuous load suggested.
Another argument for autoforms is that devices will run at their full wattage. Here is an example:
120 X 120 = 14,400
110 X 110 = 12,100
So at 110 volts the device only yields ~84% of the full wattage. That means any heating device (such as the water heater) will take much longer to do it's job--about 16% longer.
At 100 volts the yield becomes about 69% and it takes 31% longer for heating devices. At that level the 325 watt fridge is down to about 224 watts of "real" output.
This is why I find myself nearly always running my autoformer.
The best way to be able to run the microwave for 2 minutes while the roof air conditioner is on is to have a hybrid inverter charger. One that does load support.
Another way to do this is to do "double conversion". Before I had a hybrid inverter, I would plug my RV into the inverter. I would "feed" only the converter from shore power.
One could move the AC breaker to its own box and have an auxiliary shore power cord to feed it. I chose to do that for the electric water heater. In fact I simply used plugs so there is no breaker in the RV for this auxiliary shore power cord. The heater draws 1400 watts so it is less than the 80% continuous load suggested.
Another argument for autoforms is that devices will run at their full wattage. Here is an example:
120 X 120 = 14,400
110 X 110 = 12,100
So at 110 volts the device only yields ~84% of the full wattage. That means any heating device (such as the water heater) will take much longer to do it's job--about 16% longer.
At 100 volts the yield becomes about 69% and it takes 31% longer for heating devices. At that level the 325 watt fridge is down to about 224 watts of "real" output.
This is why I find myself nearly always running my autoformer.
barchetta1 wrote:
Excellent! thats why I am going to follow the amazon review advice and move the 20amp ac breaker away from the 30amp main. If I can run my microwave for just 2 minutes or less while the water heater and ac are on that would help.
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