Question about Dayton G73 Utility Heater

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Installing a Dayton G73

Hi there. I've wired 240 for the garage, everything works on a 15a basis, lights etc. Now I'm installing the G73 heater, and everytime I turn the breaker on in the garage, detached, it trips the breaker in the house. I'm using a 30amp breaker in the garage, and a 40amp breaker in the house. The unit call for 30amps, however on an amp meter, it's tripping in the house on 7.6amps? The red and black wires from the breaker in the garage are wired to the L1 and L2 ports, the bare ground from the garage panel is wired to the ground screw in the dayton unit, and the white wire is not utilized...what am I doing wrong to trip the house breaker? I've tried different breakers, larger breakers...everything trips the house breaker. Please help.

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How many amps is your service? And what gauge wire did you use for the heater?
If your service is only 40amps that is your problem. You don't have enough amps for the heater and the rest of your house, you will have to upgrade your service.

Posted on Jan 18, 2009

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I have installed a Dayton G73 heater in my garage along with a 240V outlet. I am using a 3 prong dryer cord and I am having difficulty figuring out which wire to hook to L1 and L2. I have determined the...


here's a link to the install guide
www.air-n-water.com/manuals/G73.pdf

http://en.allexperts.com/q/Electrical-Wiring-Home-1734/Installation-Dayton-G73-Garage.htm

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If that is a 240V unit then you are correct wiring L1 and L2 to black and red. Unless the unit uses 120V for something like a control panel, it doesn't need the neutral.

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