For a new California residential construction project, what is the maximum number of 12 AWG THHN conductors permitted in a 3/4-inch EMT conduit according to CEC conduit fill requirements?
Correct Answer
C) 9 conductors
According to CEC Table C1 (Annex C), a 3/4-inch EMT conduit can accommodate a maximum of 9 conductors of 12 AWG THHN wire. This calculation is based on the 40% fill requirement for conduits containing three or more conductors, ensuring proper heat dissipation and wire pulling capabilities.
Why This Is the Correct Answer
According to CEC Table C1 (Annex C), a 3/4-inch EMT conduit can accommodate a maximum of 9 conductors of 12 AWG THHN wire. This calculation is based on the 40% fill requirement for conduits containing three or more conductors, ensuring proper heat dissipation and wire pulling capabilities.
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