12v inverter draw on batteries with microwave
If I get a 2000w inverter for my MH and use my 1100w microwave, what will be the draw off the house batteries? Using Ohm's Law I calculate about 9 amps draw at 120v. Then converting from 120v to 12...
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Piano,
I have the Xantrex PROwatt SW 1000.
Sorry, I can't say with any certainty, as to the 120v draw. I've been meaning to confirm with my kill-a-watt, but according to the display on the Xantrex, the 700w Danby pulls over 1200 watts. BFL has the same microwave, and he said that seems too high? Ours are both rated at 1080w, I think it is? What's worse, the Xantrex doesn't even register anything under 18w, so that could push the wattage up even higher.
As for 120 line voltage (drop), that too needs to be confirmed with my kill-a-watt. And if I remember correctly, the Trimetric's display says the microwave pulls in excess of 90a?
Vbatt drops to the low 11's, on say a 90% bank.
But I knew going in, I was taxing my system by using the microwave. At some point, it just makes more sense to run off gen power. For example, 5 minutes of microwave time can easily turn into 20-30 minutes of gen run time, to replenish the Ah's used. Same goes with any high power-hungry appliance. But running the gennie for 5 minutes is quite ridiculous, as well, so...
I have the Xantrex PROwatt SW 1000.
Sorry, I can't say with any certainty, as to the 120v draw. I've been meaning to confirm with my kill-a-watt, but according to the display on the Xantrex, the 700w Danby pulls over 1200 watts. BFL has the same microwave, and he said that seems too high? Ours are both rated at 1080w, I think it is? What's worse, the Xantrex doesn't even register anything under 18w, so that could push the wattage up even higher.
As for 120 line voltage (drop), that too needs to be confirmed with my kill-a-watt. And if I remember correctly, the Trimetric's display says the microwave pulls in excess of 90a?
Vbatt drops to the low 11's, on say a 90% bank.
But I knew going in, I was taxing my system by using the microwave. At some point, it just makes more sense to run off gen power. For example, 5 minutes of microwave time can easily turn into 20-30 minutes of gen run time, to replenish the Ah's used. Same goes with any high power-hungry appliance. But running the gennie for 5 minutes is quite ridiculous, as well, so...
