Conduit Fill Table

As you design a solar system you will often need to know how many conductors can fit into a conduit. This is a quick reference to help you.

• Based on NEC2014 Table C
• Wire Type is THHN, THWN, THWN-2

Conduit Size	Conduit Type	14AWG	12AWG	10AWG	8AWG	6AWG	4AWG	3AWG	2AWG	1AWG	1/0AWG	2/0AWG	3/0AWG	4/0AWG	250kcmil	300kcmil	350kcmil	400kcmil	500kcmil
1/2”	EMT	12	9	5	3	2	1	1	1	1	1	0	0	0	0	0	0	0	0
	PVC	11	8	5	3	1	1	1	1	1	1	0	0	0	0	0	0	0	0
3/4”	EMT	22	16	10	6	4	2	1	1	1	1	1	1	1	0	0	0	0	0
	PVC	21	15	9	5	4	2	1	1	1	1	1	1	1	0	0	0	0	0
1”	EMT	35	26	16	9	7	4	3	3	1	1	1	1	1	1	1	1	0	0
	PVC	34	25	15	9	6	4	3	3	1	1	1	1	1	1	1	0	0	0
1-1/4”	EMT	61	45	28	16	12	7	6	5	4	3	2	1	1	1	1	1	1	1
	PVC	60	43	27	16	11	7	6	5	3	3	2	1	1	1	1	1	1	1
1-1/2”	EMT	84	61	38	22	16	10	8	7	5	4	3	3	2	1	1	1	1	1
	PVC	82	59	37	21	15	9	8	7	5	4	3	3	2	1	1	1	1	1
2”	EMT	138	101	63	36	26	16	13	11	8	7	6	5	4	3	3	2	1	1
	PVC	135	99	62	36	26	16	13	11	8	7	6	5	4	3	3	2	1	1
2-1/2”	EMT	241	176	111	64	46	28	24	20	15	12	10	8	7	6	5	4	4	3
	PVC	193	141	8	51	37	22	19	16	12	10	8	7	6	4	4	3	3	2
3”	EMT	364	266	167	96	69	43	36	30	22	19	16	13	11	9	7	6	6	5
	PVC	299	218	137	79	57	35	30	25	18	15	13	11	9	7	6	5	5	4
3-1/2”	EMT	476	347	219	126	91	56	47	40	29	25	20	17	14	11	10	9	8	6
	PVC	401	293	184	106	77	47	40	33	25	21	17	14	12	10	8	7	6	5
4”	EMT	608	443	279	161	116	71	60	51	37	32	26	22	18	15	13	11	10	8
	PVC	517	377	238	137	99	61	51	43	32	27	22	18	15	12	11	9	8	7