Interlock and Wen Generator Problem?

Is it possible you failed to turn off the main and are sending power to the grid.

Is an a/c condenser unit fed direct with its cut-out mounted outside possible? I’m thinking there’s a sub-panel piggybacking with no breaker in the can you’re working with.

That’s a good place to start. Something that requires more than your generator can provide is still on.

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Occasionally if your generator is meant to run 120v items but you are plugging it into a 240v transfer switch/inlet, then you might create a short circuit.

Other potential issue is that if you have an older home which has multiwire branch circuit, it's possible you can overload the neutral

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My generator has a 30amp twist type connection that is 240v and a 30amp three prong connection that is 120v. I have a switch that is used for these connections. It is the twist type connection that I used in the past with a splitter for extension cords. This generator is listed as transfer switch ready. Even with the 30amp breaker turned off at the interlock it goes into overload.

My house is a little over two years old.

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Every singe breaker is turned off? That's odd.

I don't know if you have the electrical equipment on hand to meter the amount of current in that cable when connected, but you need to see what it's pulling when turned on. Pay special attention to any 240V loads (HVAC compressors, ovens, cooktops, driers, etc.).

There's also a possibility that the receptacle was wired improperly, although that's less likely. Just gotta follow a process of elimination to

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An electrician did the work and he did check the conunity (sp) of the cord itself, but not plugged into the generator. I have this cord. Does it make any difference what order I plug the cord in? I had it connected to the outlet before I connected it to the generator. I also let the generator run a short period before plugging it in. My generator has a light that shows it has output.

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Can you plug in a 240 appliance directly? Stove or dryer? Maybe try that?

To see if there’s an issue with your generator? If that works, I’d assume it’s on the panel side?

You may need to have the generator ready and call the electrician back?

I tried my brother's generator and it would not work either.

The electrician came back out to check everything. He did find a broken lock screw in the outlet. He also changed out the 30 amp breaker just in case. But it still did not work. He brought a master electrician with him and they think the overload on the 240 side is bad. I asked then why didn't it work with my brother's generator and 120v connection. The broken connection plus the double pole may have prevented my brother's 120v not working. I have an adapter coming tomorrow where I can plug my cord into the 120v side. The master electrician made a comment to remove one of the wires at the double breaker.

We will try again tomorrow.

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We will try again tomorrow.

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Keep me posted on the issue. Curious what the outcome is here. Best of luck.

I have a question regarding generator connecting properly. I had electrician wire a 30 amp four prong receptacle into my service panel. I turn main breaker off and service goes into subpanel B, and I can turn on breakers to power lights, ceiling, fan, window, unit, AC’s, etc.. Everything works fine on my Briggs & Stratton 5000 W generator. However, I just bought a new champion 9200 watt generator and when I plug it in nothing happens. Could it be wired improperly? Is it possible that the two hot wires (line one and two) are backwards? I also had a Honda 5000w generator that a neighbor gave me that I tried to plug in with the 30 amp cord, and every time I connected it, it would trip the breaker on the generator. Both Honda generator and 30 amp cord were tested at the dealership and everything was fine. Thoughts?