Relay Coil Wiring

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Old 03-12-09, 05:55 AM
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Relay Coil Wiring

Installing a relay to operate a booster fan. The coil is 120v and I'm taking my voltage from the circuit board. On the coil, do I ground the other side or use the neutral wire?

Thanks in advance!
 
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Old 03-12-09, 07:39 AM
Tolyn Ironhand's Avatar
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You always use a neutral wire in 120v. The ground is only to carry fault current.
 
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Old 03-12-09, 09:42 AM
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The wiring to the 120V relay would be "power" which is hot and neutral.

Then should the relay be installed in an enclosed metal box, the metal box would be grounded. The grounding would be to protect anyone who touches the metal box should a wire inside the box come in contact with the metal box.

Like on an electric range. The outside metal range cabinet is grounded. Inside the electrical components are connected to power.
 
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Old 03-13-09, 05:28 AM
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Thank you for the prompt responses. I thought the coil wiring would be hot and neutral but thought I'd better ask first.
 
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