Building Code Of The Day 03/23/2019 Cable Sheath in panelboards

Based on the 2017 NEC

Question:  What is the maximum length of a cable sheath allowed in a panelboard?

A) ½”

B) 1”

C) ¼”

D) 3”

E) None of the above

Answer:  E) There is no maximum length described, the only rule is that the cable sheath must extend 1/4  inch into cabinet, cutout box, or meter socket enclosure.

312.5 (C) Cables. Where cable is used, each cable shall be secured to the cabinet, cutout box, or meter socket enclosure.

(5)The cable sheath is continuous through the raceway and extends into the enclosure beyond the fitting not less than 6 mm (¼ in.).

Note: there is another provision in 334.15.

If you find any errors or have additional information that would expand on any code, building standards or manufacturer requirements please let me know.

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