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MEP-003a voltage For what it's worth I found a bad breaker leg. Tried to start the air conditioner as before and L3 dropped to 60V at the lug. Metered the in and out for that leg at the breaker. 120V in, 60V out.....bingo! Cycled the breaker a dozen times and the voltage drop disappeared...

I agree. Good advice and thank you. Having the right voltage before loading, and a drop only when a decent load is applied points to the things you mention. I was hoping one component would be notoriously suspect. I'll test further and work backward from the lugs. If anyone can point to a...

Hi again, Really do appreciate your help. No, the airconditioner compressor did not start. It tried but then gave off buzz.......like it was single phasing. I'll check my connections again and do some tracing. Also, I'll connect my 4th wire (green) to the gen frame so I am only bonded at...

Forgot some detail. Unloaded voltage: L0 L! 120 L0 L3 120 L1 L3 240 Loaded voltage, AND after removing load....before shutdown: L0 L1 120 L0 L3 65 L1 L3 Can't remember!! Thanks pfazioli

Hi, thanks for helping. Transfer switch is on order but for testing purposes I am feeding my house panel through 20 ft. of 6-4 cable through a 50A breaker. Cable ends at the gen are attached tightly to the output lugs. House feed is through a 240V 50A 4 wire plug: Gen L0 to house L0 Gen...

Hi, looking for an answer. When I set my new units reconnect switch to 120/240V 1PH, unloaded voltage meters as it should. When I apply a 240V load (air conditioner, 5000W) one leg drops out to about 60V and stays there, the other leg stays at 120V. If I shut the set down, cycle the breaker...