UL Specification Cables - NMD 90 c (UL)-(CAN/CSA-C22.2 No. 48-M90)

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Definition NMD 90 is a non-metallic sheathed cable consisting of solid or stranded
annealed copper. NMD 90 cables may be used for both exposed work in
dry locations or concealed work in dry or damp locations. NMD 90 cable is
primarily used in residential wiring as branch circuits for outlets, switches,
and other loads. NMD 90 cable may be run in air voids of masonry block
or tile walls where such walls are not subject to excessive moisture or
dampness. The construction is manufactured using annealed copper
conductors stranded conductors; a 90°C rated thermoplastic polyvinyl
chloride (PVC) insulation and a nylon jacket for the individual conductors;
and a PVC jacket surrounding the overall construction. The cable sheathing
jacket is color coded for quick size identification.
Voltage Rating 600 volts for both exposed and concealed applications at an operating
temperature of 90°C for dry locations.
Construction • Solid conductor of soft copper for sizes 14-10 AWG
• Stranded conductors of larger copper for sizes 8 AWG and larger
• Soft uncoated copper conductor for grounding
• 2-conductor constructions have the insulated conductors laid parallel
• Ground wire is wrapped with paper and laid parallel between the
insulated conductors
• 3- and 4- conductor construction have the insulated conductors twisted
together. When a ground wire is present, it is wrapped with paper and
twisted together with the insulated conductors.
• Different sizes of cables are represented by different colored PVC
jackets as follows:
• 14 AWG – White
• 12 AWG – Yellow
• 10 AWG – Orange
• 8 AWG – White
• 6 AWG – White
Cable Marking • Certification Number
• c(UL)
• Maximum voltage (300 V)
• The size and number of circuit conductors
with the grounding conductor size
• The marking NMD90 NYLON
• Manufacturers Name
• Date