National Electrical Installation Standards

Standards as High as Your Own

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Monday, June 18, 2018

Question:

We were having a discussion in our office regarding this particular installation. We have an exterior utility meter socket mounted back to back with an interior electrical service panelboard on a concrete block wall. We have a short EMT conduit nipple connecting the two enclosures through the back of each, compression connectors, completely encased in the concrete block. The means of disconnect and overcurrent protection is in the panelboard. We installed grounding bushings on the threads of each EMT connector within the enclosures. Is there anything in the code that prohibits using EMT in this application?

Sincerely, Dennis DiPasquo

A

Answer:

Hey Dennis thanks for your question. The use of  EMT as you describe seems acceptable but make sure you comply with the wire bending space rules in 312.6 and 408.55. Sealing the raceway as stated in 300.7 is also necessary.

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