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We have an Singer electric heater. It is 480v 3 phase Commercial forced air. I need to know what size breaker need to pull this much power and also I have no instructions for hot ground and nuetral wiring. The colors are brown yellow and orange.

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You cannot hook this thing up unless you have 480v 3 phase service from the power company which you will not have unless you are some kind of industrial operation. There is no neutral involved in 480 3~ only three hots on different phases and a ground for safety. If you do happen to have this kind of power available you should call a professional to do the work for you. Judging by your understanding of electricity based on the question you asked, you will most assuredly kill yourself in the process of trying to hook this thing up.

Posted on Aug 25, 2008

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