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Friday, May 24, 2019
Question:
In a vertical run of 80feet Where do you install a strain relief in the 1 1/2” met pipe run
Matt Banks
A
Answer:
Hey Matt thanks for your question. Supporting bushings, cleats, or wedges are commonly used in boxes at the top of the vertical raceway and at intervals if necessary. The various methods allowed are stated in 300.19(C) and Table 300.19(A) has the vertical lengths based on conductor material and size.