I replaced a 16V transformer for a doorbell, that was mounted on my electric panel box. The old transformer had no ground wire, but the new one does. Can I drill a hole in the box to attach the ground?
Md Ariful Islam
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Dr. Md Rushad Rahman
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No, you would generally need to run the equipment grounding conductor (EGC) in the same cable as the line and neutral conductors that supply the transformer in its new location, terminating all three conductors inside a junction box. The EGC wire would then attach to the transformer's wire as well as the junction box, if the box is metal. You could also use properly installed metallic conduit as the EGC path to ground.
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