Underground Wire | McMaster-Carr

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19 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

UF-B Cable

THHN 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.

UF-B Cable—UF-B cable is for wet locations where cable may be exposed to moisture or humidity. It's often used as underground feeder cable for pumps and lighting. The insulation resists moisture and UV light.

							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
UF-B, THHN Solid Wire







				600V AC

				14	2	14/2	15 amp @ 86° F	0.42"	0.17"	PVC	Gray	PVC	Black, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 493	10, 25, 50, 100, 250	7116K91	00000	00000


				14	3	14/3	15 amp @ 86° F	0.58"	0.17"	PVC	Gray	PVC	Black, Red, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 493	10, 25, 50, 100, 250	7116K95	0000	0000
				12	2	12/2	20 amp @ 86° F	0.46"	0.18"	PVC	Gray	PVC	Black, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 493	10, 25, 50, 100, 250	7116K92	0000	0000
				12	3	12/3	20 amp @ 86° F	0.63"	0.18"	PVC	Gray	PVC	Black, Red, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 493	10, 25, 50, 100, 250	7116K96	0000	0000
				10	2	10/2	30 amp @ 86° F	0.52"	0.22"	PVC	Gray	PVC	Black, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 493	10, 25, 50, 100, 250	7116K93	0000	0000
				10	3	10/3	30 amp @ 86° F	0.73"	0.22"	PVC	Gray	PVC	Black, Red, White	10 to 190	Uninsulated Ground Wire	UL Listed	UL 493	10, 25, 50, 100, 250	7116K97	0000	0000

Irrigation Cable

This wire is often used for sprinkler systems.

	OD	Outer Jacket Color	Inner Insulation Material	Inner Insulation Color	Temp. Range, ° F	Certification		10 ft. Long	25 ft. Long	50 ft. Long	100 ft. Long	250 ft. Long	500 ft. Long
Solid Wire with Polyethylene Outer Jacket







	30V AC/30V DC

	18	2	18/2	0.2"	Black	Polypropylene	Red, White	0 to 140	UL Listed	8070T11	00000	000000	000000	000000	000000	0000000


	18	3	18/3	0.21"	Black	Polypropylene	Green, Red, White	0 to 140	UL Listed	8070T12	00000	00000	00000	00000	000000	000000
	18	4	18/4	0.23"	Black	Polypropylene	Blue, Green, Red, White	0 to 140	UL Listed	8070T13	00000	00000	00000	00000	000000	000000
	18	5	18/5	0.25"	Black	Polypropylene	Blue, Green, Red, White, Yellow	0 to 140	UL Listed	8070T14	00000	00000	00000	00000	000000	000000
	18	6	18/6	0.27"	Black	Polypropylene	Blue, Brown, Green, Red, White, Yellow	0 to 140	UL Listed	8070T15	00000	00000	00000	00000	000000	000000
	18	7	18/7	0.27"	Black	Polypropylene	Blue, Brown, Green, Orange, Red, White, Yellow	0 to 140	UL Listed	8070T16	00000	00000	00000	00000	000000	000000
	18	8	18/8	0.29"	Black	Polypropylene	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0 to 140	UL Listed	8070T17	00000	00000	00000	000000	000000	000000
	18	9	18/9	0.31"	Black	Polypropylene	Black, Blue, Brown, Green, Orange, Pink, Red, White, Yellow	0 to 140	UL Listed	8070T18	00000	00000	00000	000000	000000	000000

Submersible Pump Cable

Supply power to submersible pumps in water or oil wells. The TPE insulation holds up to moisture, chemicals, oil, and UV light, so this cable can be used outdoors. Also known as twisted pump cable, it can be used in grounded or ungrounded water well cable systems. The insulated ground wire is not counted in the number of wires.

	Current @ Temp.	OD	Outer Jacket Color	Temp. Range, ° F	Features	Cable Designation	Certification	Specs. Met		10 ft. Long	25 ft. Long	50 ft. Long	100 ft. Long
Stranded Wire with TPE Outer Jacket







	600V AC

	12	3	12/3	20 amp @ 86° F	0.46"	Black, Green, Red, Yellow	-55 to 140	Insulated Ground Wire	THW	UL Listed	UL 83	6237N22	000000	000000	0000000	0000000


	10	3	10/3	20 amp @ 86° F	0.51"	Black, Green, Red, Yellow	-55 to 140	Insulated Ground Wire	THW	UL Listed	UL 83	6237N23	00000	000000	000000	000000

Outdoor Lighting Cable

This wire is designed for underground, low-voltage lighting equipment, such as landscape lighting. The wires can be separated for installation.

	Current @ Temp.	Wd.	Thk.	Outer Jacket Color	Temp. Range, ° F	Certification		10 ft. Long	25 ft. Long	50 ft. Long	100 ft. Long	250 ft. Long	500 ft. Long
Stranded Wire with PVC Outer Jacket







	30V AC

	16	2	16/2	10 amp @ 86° F	0.31"	0.16"	Black	0 to 140	UL Listed	8246T11	00000	000000	000000	000000	0000000	0000000


	14	2	14/2	15 amp @ 86° F	0.34"	0.17"	Black	0 to 140	UL Listed	8246T12	00000	00000	00000	00000	000000	000000
	12	2	12/2	20 amp @ 86° F	0.42"	0.19"	Black	0 to 140	UL Listed	8246T13	00000	00000	00000	000000	000000	000000