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View Full Version : Why do you ground the common on 24 volt transformers in an air condition unit?


gracianimanuel
Jan 19, 2011, 03:23 PM
Why do you ground the common on a 24 volt transformer in a air condition unit

Stratmando
Jan 19, 2011, 05:40 PM
I never knew you did, I thought the 24 volts had no contact with ground, and the transformer in addition to lowering the voltage, also provided Isolation. I can see tieing to ground to actually be a dangerous thing.