Electric wire THHN THW THWN copper conductor insulation wire Building wire

1. Application

The PVC insulated wires belong to the series of laying wires, which are mainly suitable for laying at the fixed places. They are widely used as connectors of driving, lighting, electric equipment, instrument and telecommunication equipment with rated voltage up to 450/750V.Part of the plastic insulated wires are used at the equipment with AC rated voltage up to 300V

2. Standard

IEC 60227,IEC 60228,IEC 60332,GB/T 5023,BS 6500,BS 6004,VDE 0281,0282 ,UL 83, AS/NZS 5000. etc.

3. Specification

Conductor material: Copper, Aluminum

Conductor structure: Solid, strand, flexible

Insulation material: PVC,XLPE,PE

Sheath material : PVC, Nylon

Core : 1,2,3,4,5

Shape of wire : round, flat

Voltage : 300-1000V

THHN
Size	Area	Thread	Insulated thickness		Nylon thickness		Dia of wire		Weight
AWG	mm²	#	inch	mm	inch	mm	inch	mm	kg/gm
14	2.08	7	0.015	0.38	0.004	0.1	0.111	2.81	24
12	3.31	7	0.015	0.38	0.004	0.1	0.13	3.29	36
10	5.26	7	0.02	0.51	0.004	0.1	0.164	4.15	58
8	8.37	7	0.03	0.76	0.005	0.13	0.216	5.48	95
6	13.3	7	0.03	0.76	0.005	0.13	0.254	6.44	145

THW
Nominal section	N/Dia	Max outer Dia(mm)	Reference  Weight		Conductor resistance at 20℃≤(Ω/km)
			(kg/km)
(mm2)	(mm)		copper		copper
1.5(class 1)	1/1.38	3.3	20.3		12.1
1.5(class2)	7/0.52	3.5	21.6		12.1
2.5(class 1)	1/1.78	3.9	31.6		7.41
2.5(class2)	7/0.68	4.2	34.8		7.41
4(class 1)	1/2.55	4.4	47.1		4.61
4(class2)	7/0.85	4.8	50.3		4.61
6(class 1)	1/2.76	4.8	50.3		3.08
6(class2)	7/1.04	5.4	71.2		3.08
10	7/1.35	7	119		1.83
16	7/1.70	8	179		1.15
25	7/2.04	10	281		0.727
35	7/2.52	11.5	381		0.524
50	19/1.78	13	521		0.387