edges.
353.46 Bushings. Where a conduit enters a box, fitting, or other enclosure, a bushing or adapter shall be provided to protect the wire from abrasion unless the box, fitting, or enclosure design provides equivalent protection.
FPN: See 300.4(G) for the protection of conductors
4 AWG and larger at bushings.
353.48 Joints. All joints between lengths of conduit, and between conduit and couplings, fittings, and boxes, shall be made by an approved method.
FPN: HDPE conduit can be joined using either heat fu 7
sion, electrofusion, or mechanical fittings.
353.56 Splices and Taps. Splices and taps shall be made in accordance with 300.15.
353.60 Grounding. Where equipment grounding is re- quired, a separate equipment grounding conductor shall be installed in the conduit.
Exception No. 1: The equipment grounding conductor shall be permitted to be run separately from the conduit where used for grounding dc circuits as permitted in
250.134, Exception No. 2.
Exception No. 2: The equipment grounding conductor shall not be required where the grounded conductor is used to ground equipment as permitted in 250.142.