Does EMT conduit need to be grounded?

Old 10-18-17, 06:28 AM
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Does EMT conduit need to be grounded?

I am running surface mounted emt conduit and metal boxes in my basement. Can I just ground the box and receptacle normally or does the conduit itself have to be grounded somehow? Is there a situation where a conductor gets lose/cut in the conduit and the conduit itself could become hot? Or would the conduit just take the ground from the box's grounding screw?

It's all 12/2 romex.
Old 10-18-17, 06:44 AM
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The EMT should start at a grounded metal box or panel. Each subsequent box should be metal with device grounds pigtailed to the metal box.
Old 10-18-17, 02:05 PM
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A loose connection could cause the lost of grounding and leave the conduit hot. This is why secure connections are so important . A redundant grounding means avoids leaving a conduit hot if a connection came loose.
Old 10-19-17, 10:24 AM
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The conduit itself is grounded through the metal junction boxes and correct box fittings tightly installed to the conduit. You cannot use EMT conduit with plastic boxes for this reason.

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