Thermostat Wire | McMaster-Carr

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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.

Thermostat Cable

Hook up thermostats, air-conditioning units, and other low-voltage equipment. This cable is designated CL2 so it has flame-resistant insulation. The wires are solid so it stays in the shape you bend it.

					Outer Jacket		Inner Insulation
	AWG	No. of Wires	Cable AWG	OD	Material	Color	Material	Color	Temp. Range, ° F	Cable Designation	Certification		10 ft. Long	25 ft. Long	50 ft. Long	100 ft. Long	250 ft. Long
Solid Wire







				150V AC/150V DC

				20	2	20/2	0.11"	PVC	Brown	Polyethylene	Red, White	0 to 140	CL2	ETL Listed	8278T11	00000	000000	000000	000000	000000


				20	3	20/3	0.12"	PVC	Brown	Polyethylene	Green, Red, White	0 to 140	CL2	ETL Listed	8278T12	0000	00000	00000	00000	—
				20	4	20/4	0.13"	PVC	Brown	Polyethylene	Blue, Green, Red, White	0 to 140	CL2	ETL Listed	8278T13	00000	00000	00000	00000	00000
				20	5	20/5	0.15"	PVC	Brown	Polyethylene	Blue, Green, Red, White, Yellow	0 to 140	CL2	ETL Listed	8278T14	00000	00000	00000	00000	00000
				20	6	20/6	0.16"	PVC	Brown	Polyethylene	Blue, Brown, Green, Red, White, Yellow	0 to 140	CL2	ETL Listed	8278T15	00000	00000	00000	00000	000000
				20	8	20/8	0.17"	PVC	Brown	Polyethylene	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0 to 140	CL2	ETL Listed	8278T16	00000	00000	00000	00000	000000
				18	2	18/2	0.13"	PVC	Brown	Polyethylene	Red, White	0 to 140	CL2	ETL Listed	8278T21	0000	00000	00000	00000	00000
				18	3	18/3	0.14"	PVC	Brown	Polyethylene	Green, Red, White	0 to 140	CL2	ETL Listed	8278T22	0000	00000	00000	00000	00000
				18	4	18/4	0.15"	PVC	Brown	Polyethylene	Blue, Green, Red, White	0 to 140	CL2	ETL Listed	8278T23	00000	00000	00000	00000	000000
				18	5	18/5	0.17"	PVC	Brown	Polyethylene	Blue, Green, Red, White, Yellow	0 to 140	CL2	ETL Listed	8278T24	00000	00000	00000	00000	000000
				18	6	18/6	0.19"	PVC	Brown	Polyethylene	Blue, Brown, Green, Red, White, Yellow	0 to 140	CL2	ETL Listed	8278T25	00000	00000	00000	00000	000000


				18	8	18/8	0.2"	PVC	Brown	Polyethylene	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0 to 140	CL2	ETL Listed	8278T26	00000	00000	00000	00000	000000