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I,m not exactley sure how to connect the wiring to the capacitor,on a three phase unit,or one that is wired for three phase (a/c).

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If it is a three phase motor then it will not require a capacitor. Residential A/C compressors and fan motors have 3 wires coming out of then but they are not three phase, they are still single phase. If you are working with a residential system then you should have one wire that is common, one wire that is the start winding, and one wire that is the run winding. To connect it, L1 from the contactor would connect to one side of the capacitor. Connect the run wire to the same side of the capacitor. Connect the start wire to the opposite side of the capacitor. The common wire will connect to L2 on the contactor.

Posted on Sep 03, 2010

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