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Old 09-25-2018, 07:34 PM   #1
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Default Go Power 3000w MSW invrter

Just bought a 2015 GWV with the above inveter, the microwave which was anemic last night while plugged in blew up when I just tried it with the inverter. Should I have concerns about just replacing the microwave. What experiences have you all had.
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Old 09-25-2018, 07:41 PM   #2
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Some microwaves don't like the modified sine wave, especially if they have digital controls. MSW will also give less total output because of the wave form. If you can find a plain old style crank timer microwave, you might be better off.
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Old 09-25-2018, 07:45 PM   #3
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Interesting. What exactly do you mean by "blew up"?

All things considered, I'd expect a 3000w inverter to power an RV-sized microwave.

FWIW, in my 2004 Sprinter-based Class B, it is not possible to run the microwave off the coach battery, only when connected either to shore power or when the Onan is running.
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Old 09-25-2018, 08:01 PM   #4
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Well, to be honest, there is a reason why that style of inverter costs $400 and a marine-grade PSW inverter of the same size costs 4x as much. You might find a MW that will work fine, but it is a roll of the dice, I think.
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Old 09-26-2018, 04:34 AM   #5
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Quote:
Originally Posted by rvsprinterguy View Post
Interesting. What exactly do you mean by "blew up"?

All things considered, I'd expect a 3000w inverter to power an RV-sized microwave.

FWIW, in my 2004 Sprinter-based Class B, it is not possible to run the microwave off the coach battery, only when connected either to shore power or when the Onan is running.
"Blew up" = flash of light flowed by puff of smoke from the right side part way back, and then nothing.

Bought a new microwave from Wallyworld, the box was a bit rumpled and maybe opened. Turned the power on that one and it buzzes and gives a 88:88 indication which the maker's website says indicates a power failure and to hit the "clear" button which this unit doesn't have. I hit them all and the buzzing continued. I've thoroughly checked the circuit and tried it on other circuits with no change. What are the odds I got a bad one someone else reurned, oh, about 100% seems reasonable. Tomorrow I'll get a different one.
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Old 09-26-2018, 04:39 AM   #6
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Quote:
Originally Posted by avanti View Post
Well, to be honest, there is a reason why that style of inverter costs $400 and a marine-grade PSW inverter of the same size costs 4x as much. You might find a MW that will work fine, but it is a roll of the dice, I think.
Avanti; yeah I get that. I'm trying to survive until I can assemble a complete package that will allow at least a few hours of AC. Whether it will replicate yours or be a bit more is awaiting a clearer picture of my usage pattern. The coach is non-propane with a Rixen system and a compressor fridge, a good start.
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Old 09-26-2018, 01:40 PM   #7
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I suggest that you replace the MSW inverter with a sine wave inverter before you blow up another microwave. www.theinverterstore.com would be a good plave to start. Avoid places like truck stops for this kind of equipment.
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Old 09-30-2018, 05:02 PM   #8
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You might try the microwave plugged in in the house and see if the problem is with it or the inverter.

Sorry, I just noticed this is several days old post.
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Old 10-01-2018, 12:59 AM   #9
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Thank you all for your help. Indeed the "replacement" was dead as proven by a replacement exchange at Walmart which now works fine if not a little buzzy when operwting. A replacement inverter is needed since my induction hot plate refuses to work off the current msw inverter.
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Old 10-01-2018, 06:22 PM   #10
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That was the same with my induction plate and the TrippLite. I thought it over and decided that the only things I needed the inverter for was a toaster and a coffee pot...TV is 12Volt, I canstart the gennie if I need the microwave. It has worked well for me.
Carefully evaluate your needs before spending big bucks on a new inverter.
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