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There’s a video in this article showing you how to test for floating neutral using a 3-light outlet tester.

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It’s a Houghton a/c from Rec Pro. The soft start is built into the unit. Upon startup, I can use my app to watch the amp and watt draw. It’s not pulling more than 1500 watts. Actually only about 1200. It never pulls more than 14.4amps.

I called Champion support, and they are the ones who told me it was due to the floating neutral. The a/c is connected through a 15 amp breaker. I never have a problem with the popping the breaker.

At Home Depot right now buying a tester, like you showed on your video.

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Jul 27·edited Jul 27Author

You can’t actual detect inrush current with a standard meter or power line monitor. That’s because the compressor inrush current spike is less than 1/4 of a second. You need a meter with an Inrush Current setting. Here’s how it works: https://rvelectricity.substack.com/p/the-rise-of-hrdl-high-rate-data-logger

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Well the interesting thing is…

I just tested my Champion Generator and my friends Westinghouse. Both are floating neutral. I used the tester on my 120 volt a/c outlets in my van (which receives power from the 12v batteries going through the Viktron 2000 watt inverter/charger. The can system is NOT floating. I’m now assuming the Viktron is bonded.

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You know you can test to see if a generator is bounded or floating neutral with a basic 3-light outlet tester.

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I did that. That’s why I was at HD, buying the tester. Both generators are floating. I placed the tester into my van outlet, which is how I know the van is bonded. The Westinghouse (with less running watts) works on my van. The Champion (with more running watts) doesn’t.

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I have 2 questions. First, I have a van conversion using Battle Born batteries and Viktron components. All the neutral wires go to one bus bar and the ground wires to a separate bar. I’m assuming this system is a “floating neutral”. I have Champion generators, that according to Champion are floating. I don’t have a problem running anything in my van, except the a/c. Generator supplies 3500 running watts. A/C max draw is 1500 watts. The generator goes into a/c overload when the a/c compressor kicks on. The a/c does have a soft start built in.

Question 1

If I use your ground bonding plug, does that bond the entire generator? I plug into my shore power via the 30 amp outlet.

Question 2

I’m using my friends Westinghouse 4500 watt generator which is also floating, but it works perfectly fine????

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author

Not all generators are created equal, and I've never tested a Champion generator for inrush current capability. And some A/C compressors draw as much as 80 amperes of inrush current. What brand and type of soft starter do you have on your A/C? I don't think the floating neutral has anything to do with this.

And yes, a single bonding plug "bonds" all outputs of your generator. So that's easy enough to try.

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I have a 3 light outlet tester (ideal 61-051) and when testing my floating neutral generator it does not detect open neutral or open ground. a frame to neutral continuity test shows no continuity. How do you explain this?

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That’s really interesting. When you say “no continuity” can you get an actual resistance in ohms for the generator Neutral to Ground? I have a theory…

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Hi Mike, I have 2 questions. 1, I have a Champion 4000 non inverter Gen. Is it bonded? How can I tell? 2, I have a GD Momentum 376TH. It has an Onan 5500 Gen. Is that bonded? Thanks

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