Rigid PVC Conduit SCH 40 - Electrical Engineering

Rigid PVC Conduit SCH 40 (PVC SCH 40 or HDPE) provides a balance physical protection for cables and conductors and helps cable inside safely from mechanical damage. It can be bent after being heated in a portable heater box. The below table of Rigid PVC Conduit SCH 40 is in line with NEC.

PVC SCHEDULE 40 / HDPE
Trade Size	Internal Diameter		Total Area 100%		60%		1 Wire 53%		2 Wires 31%		Over 2 Wires 40%
Trade Size	mm	in.	mm²	in.²	mm²	in.²	mm²	in.²	mm²	in.²	mm²	in.²
½	15.3	0.602	184	0.285	110	0.171	98	0.151	57	0.088	74	0.114
¾	20.4	0.804	327	0.508	196	0.305	173	0.269	101	0.157	131	0.203
1	26.1	1.029	535	0.832	321	0.499	284	0.441	166	0.258	214	0.333
1 ¼	34.5	1.360	935	1.453	561	0.872	496	0.770	290	0.450	374	0.581
1 ½	40.4	1.590	1,282	1.986	769	1.192	679	1.053	397	0.616	513	0.794
2	52.0	2.047	2,124	3.291	1,274	1.975	1,126	1.744	658	1.020	850	1.316
2 ½	62.1	2.445	3,029	4.695	1,817	2.817	1,605	2.488	939	1.455	1,212	1.878
3	77.3	3.042	4,693	7.268	2,816	4.361	2,487	3.852	1,455	2.253	1,877	2.907
3 ½	89.4	3.521	6,277	9.737	3,766	5.842	3,327	5.161	1,946	3.018	2,511	3.895
4	101.5	3.998	8,091	12.554	4,855	7.532	4,288	6.654	2,508	3.892	3,236	5.022
5	127.4	5.016	12,748	19.761	7,649	11.857	6,756	10.473	3,952	6.126	5,099	7.904
6	153.2	6.031	18,433	28.567	11,060	17.140	9,769	15.141	5,714	8.856	7,373	11.427

Conduit is able to contain an allowable fill percent. Hence, a conduit fill calculation is provide here.