Electrical Installations: Pull Box Sizing | Wiring Installation | - 0 views
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newyorkengineer on 04 Apr 18Pull boxes are used along with conduit to simplify wiring installation, hence their name. The sizing requirements for pull boxes, junction boxes, handhole and conduit bodies exist to prevent conductor insulation damage. The depth of a box for a straight pull is determined by the size of the largest conduit and by space required by locknuts and bushings.