NM-B Cable | McMaster-Carr

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Cable Designation

NM-B

American Wire Gauge (AWG)

Number of Wires

Outer Jacket Color

Wire Construction

Cable AWG

System of Measurement

Length

Color

Voltage

Material

Shielding

Wire Material

Flexibility

Current @ Temperature

15 amp @ 86° F

20 amp @ 86° F

30 amp @ 86° F

Inner Insulation Color

Certification

Outer Jacket Material

Thickness

Width

Maximum Temperature

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

RoHS

12 Products

About Wire and Cable

Compare wire vs. cable and choose the right option based on gauge, number of conductors, insulation, and current rating.

Building Cable

THHN Cable

NM-B Cable

Rated for in-wall installation, this cable carries power to wall outlets. Also known as branch circuit wire, it can be used without conduit. It has solid THHN building wires, so the cable will stay in the shape you bend it. The uninsulated ground wire is not counted in the number of wires.

NM-B Cable—NM-B cable is for dry locations where moisture is not a concern, and often run through walls, ceilings, and concrete blocks.

							Outer Jacket		Inner Insulation								Per Ft.
	AWG	No. of Wires	Cable AWG	Current @ Temp.	Wd.	Thk.	Material	Color	Material	Color	Temp. Range, ° F	Features	Certification	Specs. Met	Choose a Length, ft.		1-249	250-Up
NM-B, THHN Solid Wire







				600V AC

				14	2	14/2	15 amp @ 86° F	0.37"	0.16"	PVC	White	PVC	Black, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 719	10 , 25 , 50 , 100 , 250	69935K61	00000	00000


				14	3	14/3	15 amp @ 86° F	0.46"	0.18"	PVC	Blue	PVC	Black, Red, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 719	10 , 25 , 50 , 100 , 250	69935K64	0000	0000
				12	2	12/2	20 amp @ 86° F	0.42"	0.18"	PVC	Yellow	PVC	Black, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 719	10 , 25 , 50 , 100 , 250	69935K62	0000	0000
				12	3	12/3	20 amp @ 86° F	0.52"	0.19"	PVC	Purple	PVC	Black, Red, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 719	10 , 25 , 50 , 100 , 250	69935K65	0000	0000
				10	2	10/2	30 amp @ 86° F	0.49"	0.21"	PVC	Orange	PVC	Black, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 719	10 , 25 , 50 , 100 , 250	69935K63	0000	0000
				10	3	10/3	30 amp @ 86° F	0.63"	0.22"	PVC	Pink	PVC	Black, Red, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 719	10 , 25 , 50 , 100 , 250	69935K66	0000	0000

Squeeze-and-Strip Building Cable Strippers

With just a squeeze, strip and remove outer insulation from your cable. These strippers require less effort than standard strippers or stripping knives because you don’t need to manually peel the insulation. The blade automatically adjusts to the outer diameter of your cable to remove a layer of insulation. They’re often used on NM-B cable (also known as Romex) since you can strip the cable jacket and the insulation on the individual wires without changing settings in between. Turn the adjustment knob to fine-tune the position of the blades so you don’t nick inner insulation, thin wires, or stranded wire. Set your strip length with the stop for consistent strips across multiple cables.

With Wire Cutter and Self-Adjusting Blades

	For Cable		For Wire Ga.
	Designation	AWG	Solid	Stranded	For Wire Construction	For Wire/Cable Type	Lg.	Grip Material	Blade Material		Each
Steel



		NM-B	14/2, 12/2	20-10	22-12	Solid, Stranded	Power	8 1/4"	Rubber	Steel	4821N11	000000

Building Cable Strippers

Remove the outer and inner insulation of NM-B building cable, commonly found inside your walls running power to light fixtures and switches. These strippers have a plier nose, which is useful for pulling and looping wire.

With Plier Nose, Bolt Cutter, and Wire Cutter

Image of Product. Front orientation. Building Cable Strippers.

Steel—Steel strippers stay sharp with continuous use.

Stainless Steel—Stainless steel strippers resist corrosion and won't rust as quickly as strippers with steel blades when stored. They're best for less frequent use because their blades dull more quickly than steel blades.

	For Cable		For Wire Ga.
	Designation	AWG	Solid	Stranded	For Wire Construction	For Bolt Thread Size	For Wire/Cable Type	Lg.	Grip Material		Each
Steel



		NM-B	14/2, 12/2	14-12	—	Solid	6-32, 8-32	Power	7 3/4"	PVC	7294K62	000000


		Stainless Steel



				NM-B	14/2, 12/2	14-12	—	Solid	6-32, 8-32	Power	7 1/2"	PVC	4815N11	00000


				NM-B	12/2, 10/2	12, 10	14-12	Solid, Stranded	6-32, 8-32	Power	8 1/4"	Rubber	4815N12	00000

With Plier Nose, Bolt Cutter, Wire Cutter, and Voltage Detector

Image of Product. Front orientation. Wire and Cable Strippers. Building Cable Strippers, With Plier Nose, Bolt Cutter, Wire Cutter, and Voltage Detector.

Strippers with a voltage detector have a handle that flashes and beeps when they detect a live circuit.

	For Cable
	Designation	AWG	For Solid Wire Ga.	For Wire Construction	For Bolt Thread Size	For Wire/Cable Type	Lg.	Grip Material	Batteries Included	Certification		Each
Stainless Steel



		NM-B	14/2, 12/2	14-12	Solid	6-32, 8-32, 10-32	Power	7 1/2"	Polypropylene	Yes	UL Listed, ETL Listed	8802T13	000000

Tight-Space Building Cable Strippers

Angled jaws let you insert building cable into the front of these strippers, so they’re useful in tight spots, such as inside electrical boxes. These tools remove the outer and inner insulation of NM-B cable. It’s the cable you’ll often find inside your walls running power to light fixtures and switches.

With Bolt Cutter and Wire Cutter

Image of Product. Front orientation. Wire and Cable Strippers. Tight-Space Building Cable Strippers.

	For Cable
	Designation	AWG	For Solid Wire Ga.	For Wire Construction	For Bolt Thread Size	Performance	For Wire/Cable Type	Lg.	Grip Material		Each
Steel



		NM-B	14/2, 12/2	14-12	Solid	6-32, 8-32	Tight Space	Power	9 3/4"	Rubber	4818N11	000000