THWN Wire Underground

NegotiableUpdate on November 12

Model

Nature of the Manufacturer: Other

Product Category: Copper Building Wire

Place of Origin: City, Province

Online Consult Contact Information

Overview

THWN Wire Underground is often used in alternating current electrical distribution systems of many different types of buildings in North America.

Product Details

Building wire - Copper conductor THWN, Nylon Jacket PVC Insulated cables

DESCRIPTION

THWN Wire Underground is one of the most common type of electrical wire due to its use as a single conductor wire while also being used in most electrical cables. It refers to a specific type of insulation material, temperature rating, and condition of use for electrical wire and cable. The conductors are used in commercial and industrial applications specified in the National Electrical Code.

APPLICATIONS

THWN Wire Underground is often used in alternating current electrical distribution systems of many different types of buildings in North America. This is rated for voltages up to 600 volts. Aluminum and copper conductors, sold as stranded or solid, use THWN insulation. The wire is typically used for installation in conduit, machine tools, controlled circuits, or other general purpose wiring.

FEATURE

THWN Wire Underground stands for Thermoplastic Heat and Water-resistant Nylon-coated. They are are approved for use in wet or dry locations which is even better up to 90°C (75°C when exposed to oil).

THWN Wire Underground specification

Size AWG	Cross section mm2	Stranding NO./wire Diameter mm	Insulation thickness mm	Nylon thickness mm	Max.outer Diameter mm	Total weight kg/km	Ampacity for 1 conductor in free air Amp	Ampacity for 1 conductor in conduit Amp
20	0.519	1x0.813	0.38	0.1	1.77	7.07	15	10
18	0.823	1x1.02	0.38	0.1	1.98	10.94	15	10
16	1.31	1x1.29	0.38	0.1	2.25	16.48	20	15
14	2.08	1x1.63	0.38	0.1	2.59	23.17	35	25
12	3.31	1x2.05	0.38	0.1	3.01	34.16	40	30
10	5.26	1x2.59	0.51	0.1	3.81	55.04	55	40
8	8.34	1x3.26	0.76	0.13	5.04	91.22	80	55

16	1.31	19x0.30	0.38	0.1	2.46	17.95	20	15
14	2.08	19x0.38	0.38	0.1	2.86	23.8	35	25
12	3.31	19x0.47	0.38	0.1	3.31	35.7	40	30
10	5.26	19x0.60	0.51	0.1	4.22	56.2	55	40
8	8.37	7x1.23	0.76	0.13	5.47	93.7	80	55
6	13.3	7x1.55	0.76	0.13	6.43	141.3	105	75
4	21.15	7x1.96	1.02	0.15	8.22	227.6	140	95
2	33.62	7x2.47	1.02	0.15	9.75	348.1	190	130
1	42.36	7x2.78	1.27	0.18	11.24	446.2	220	150

1/0	53.49	19x1.89	1.27	0.18	12.35	553	260	170
2/0	67.43	19x2.12	1.27	0.18	13.5	688.7	300	195
3/0	85.01	19x2.39	1.27	0.18	14.85	856.8	350	225
4/0	107.2	19x2.68	1.27	0.18	16.3	1069.5	405	260

250	127	37x2.09	1.52	0.2	18.07	1263	455	290
300	152	37x2.29	1.52	0.2	19.47	1502	505	320
350	177	37x2.47	1.52	0.2	20.73	1743	570	350
400	203	37x2.64	1.52	0.2	21.92	1981	615	380
500	253	37x2.95	1.52	0.2	24.09	2457	700	430