2" PVC Sch 40 conduit fill

2" Rigid PVC conduit, Schedule 40 has an inside area of 3.291 sq in (2.047 in across). Three or more wires may take 40 % of it: 1.3164 sq in.

One wire, 53 %: 1.7442 sq in
Two wires, 31 %: 1.0202 sq in
Three or more, 40 %: 1.3164 sq in
Nipple, 60 %: 1.9746 sq in
Support: Every 5 ft, 3 ft from boxes
Sold in: 10 ft sticks

36 #8 THHN, the most it may hold, drawn to scale

How many wires fit in 2" PVC Sch 40

All wires the same size and type, by Annex C's method. For a mix of sizes, open the calculator.

Wire size	THHN/THWN-2	XHHW-2	THW/THW-2
14 AWG	135	94	94
12 AWG	99	72	72
10 AWG	62	54	54
8 AWG	36	30	30
6 AWG	26	22	18
4 AWG	16	16	13
3 AWG	13	13	11
2 AWG	11	11	10
1 AWG	8	8	7
1/0 AWG	7	7	6
2/0 AWG	6	6	5
3/0 AWG	5	5	4
4/0 AWG	4	4	3
250 kcmil	3	3	3
300 kcmil	3	3	1
350 kcmil	1	1	1
400 kcmil	1	1	1
500 kcmil	1	1	1
600 kcmil	1	1	1
700 kcmil	1	1	1
750 kcmil	1	1	1
800 kcmil	1	1	1
900 kcmil	1	1	1
1000 kcmil	1	1	1

Smaller: 1-1/2" PVC Sch 40 Bigger: 2-1/2" PVC Sch 40

Other 2" conduit

Conduit	Inside area	#14	#12	#10	#8	#6
Rigid PVC conduit, Schedule 40	3.291	135	99	62	36	26
Electrical metallic tubing	3.356	138	101	63	36	26
Intermediate metal conduit	3.630	149	109	69	39	28
Rigid metal conduit (RMC, GRC)	3.408	140	102	64	37	27
Rigid PVC conduit, Schedule 80	2.874	118	86	54	31	22
Flexible metal conduit (FMC, Greenfield)	3.269	135	98	62	35	25
Liquidtight flexible metal conduit (LFMC)	3.246	134	97	61	35	25
Electrical nonmetallic tubing (smurf tube)	3.291	135	99	62	36	26

About PVC Sch 40

Schedule 40 is the standard PVC wall. Support spacing gets wider as the size goes up (Table 352.30), and long runs in the sun need expansion fittings (352.44). See strap spacing and the fill rules.