Jun. 17, 2024
pv_n00b said:That is intentional as the term "physical damage" is used with multiple wiring methods. Based on the rule in 334.15(B), I would require protection for the NM in locations that I would not require protection for schedule 40 PVC, yet the PVC is not permitted to be installed in locations where it would be subject to physical damage.If you are looking for more details, kindly visit Liquid Tight Flexible Metal Conduit Square-lock.
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That is intentional as the term "physical damage" is used with multiple wiring methods. Based on the rule in 334.15(B), I would require protection for the NM in locations that I would not require protection for schedule 40 PVC, yet the PVC is not permitted to be installed in locations where it would be subject to physical damage.This is a subjective rule intended to permit the inspection authority to use some judgement.Right now there are a lot of areas that I would prohibit NM without additional protection, but in the 70s or 80s I would have permitted the NM in those areas because of the huge difference in the jacket used back then was much more resistant to physical damage.
LFNC shall be permitted to be used in exposed
locations in lengths not to exceed 1.8m (6 feet)
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or concealed locations
where encased in concrete
for the following purposes:
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