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Old 03-01-2012, 10:13 PM   #1
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checking for ground on a furnace 120v and 24v


I'm not sure if I am checking correctly. On the 120v side I should read 0v between ground wire and common...correct? And on the 24v side ov from common to the furnace frame with power applied or continuity from red(hot) to the frame with no power? these would mean a good ground.....correct?

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