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Support and physical protection requirements for type ac cable are similar to those for NM cable.
What is NM cable?
non-metallic
The outer coating that groups individual wires together into a cable is known as non-metallic (NM). The bundle of individual conductors in metallic encased cable or conduit wire, on the other hand, are shielded by a metal coil or conduit in some manner.
Standard NM cable, often known as NM-8, is appropriate for internal home wiring in walls or ceiling cavities. This kind of wire cannot be buried underground or used outside. It is only permitted for usage in arid places.
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