Insulated or bare conductor used for grounding equipment. Romex has 2, 3 or 4 conductors with a green.Cables that areįlame-retardant and have limited smoke features can be identified with NEC 336-11: Distinctive marks specifying cable type shall be on theĮxterior of cable's entire length. Spacing, and not installed in raceways, the allowable ampacity forĮach conductor shall be reduced per NEC, Table All splices should be made in light boxes, junction boxes, receptacle boxes orĬables: Where stacked or bundled longer than 24" without maintaining Cable shall be continuous for outlet to.NEC 336-30(b): Shall be one of the insulated types listed in NEC, Tableģ10-13. Not adequate (too slow opening the circuit). "current-limiting fuses" should be installed. If the AIC rating, supplied by the Utility Companyįor the building exceeds 10,000 amps, then wiring should be in conduit or AlwaysĬheck with the local building department- just in case.Ĭurrent rating is less than 10,000 amp. Or even prohibit, the installation of nonmetallic sheathed cable. Used in buildings that are more than 3 stories in height or as Service-Entrance Cable. Romex Use Limitation, NEC 336-5: Not to be.Definition: Nonmetallic-sheathed cable is a factory assembly of two or more insulated conductors having an outer sheath of moisture-resistant, flame-retardant, nonmetallic material.The basic advantages of nonmetallic-sheathed cable are that the outer sheath provides continuous protection in addition to the insulation applied to the conductors the cable is easily fished in partitions of finished buildings no insulating supports are required and only one hole need be bored that can accommodate more than one cable passing through a wood cross member. Where exposed, it should not be subject to physical damage. Nonmetallic-sheathed cable may be used for either exposed or concealed wiring. NEC, Article 336 covers the use, installation and construction specifications for nonmetallic-sheathed cable.The name "Romex" isĪ registered trademark of General Cable Corporation.
Generic electrical term for nonmetallic sheathed cable.
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