THWN-2 Cable | McMaster-Carr

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About Wire and Cable

Use for buildings
Stranded Wire: Flexible
Solid Wire: Bend and Stay
Temperature Range:
Wire with Nylon Outer Insulation: -10° to 190° F
Wire with Polyethylene Outer Insulation: -40° to 190° F

Install this copper wire in conduit and cable trays in commercial and industrial buildings. It's also known as branch circuit wire. The outer jacket is designed to be installed without applying pulling lubricant.

Stranded wire is flexible, so it’s pliable enough to be pulled around corners. Wire with a nylon outer insulation resists oil and water. THHN wire can be used in dry or damp locations where wire is exposed to condensation or moisture, such as a basement. THWN and THWN-2 wire can be used in both wet and dry environments.

Flame rated VW-1 wire meets requirements for preventing the spread of flames based on a timed test with vertically suspended material.

Stranded Wire with Nylon Plastic Outer and PVC Plastic Inner Insulation

TFFN, THHN/THWN, and THHN/THWN-2 Stranded

Shorter Lengths

600V AC/600V DC
Wire Ga.	Strand Count	Current	OD	Industry Designation	Specifications Met	Choose an Outer Insulation Color	Length, ft.		Per Ft.
8	19/21	55 A @ 86° F	0.21"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	10, 25, 50, 100, 250	0000000	00000
6	19/19	75 A @ 86° F	0.25"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	10, 25, 50, 100, 250	0000000	0000
4	19/17	95 A @ 86° F	0.32"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	10, 25, 50, 100, 250	0000000	0000
3	19/16	110 A @ 86° F	0.35"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	10, 25, 50, 100, 250	0000000	0000
2	19/15	130 A @ 86° F	0.38"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	10, 25, 50, 100, 250	0000000	0000
1/0	19/13	170 A @ 86° F	0.47"	THHN, THWN-2	UL Listed	Black, Blue, Brown, Green, Orange, Red, White, Yellow	10, 25, 50, 100, 250	0000000	0000
2/0	19/12	195 A @ 86° F	0.52"	THHN, THWN-2	UL Listed	Black, Blue, Brown, Green, Orange, Red, White, Yellow	10, 25, 50, 100, 250	0000000	0000

500-ft. Spools

600V AC/600V DC
Wire Ga.	Strand Count	Current	OD	Industry Designation	Specifications Met	Choose an Outer Insulation Color		Each
8	19/21	55 A @ 86° F	0.21"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0000000	0000000
6	19/19	75 A @ 86° F	0.25"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0000000	000000
4	19/17	95 A @ 86° F	0.32"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0000000	000000
3	19/16	110 A @ 86° F	0.35"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0000000	00000000
2	19/15	130 A @ 86° F	0.38"	THHN, THWN-2	UL Listed, C-UL Listed, Flame Rated VW-1	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0000000	00000000
1/0	19/13	170 A @ 86° F	0.47"	THHN, THWN-2	UL Listed	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0000000	00000000
2/0	19/12	195 A @ 86° F	0.52"	THHN, THWN-2	UL Listed	Black, Blue, Brown, Green, Orange, Red, White, Yellow	0000000	00000000

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