Voltage drop table
Distance for a 3% drop in voltage on nominal 120 volt 2 conductor copper circuits.
Current Amperes	Copper conductor size AWG
	18	16	14	12	10	8	6	4	3	2	1	1/0	2/0	3/0	4/0
	Distance in Feet to Centre of Distribution. Measured along the conductor run. Temp 60deg C
1	238.2	378.9	604.5
1.25	191.1	303	483
1.6	148.5	237	378	600.3
2	119.1	190.2	302.1	480.3
2.5	95.4	151.5	242.4	384	609
3.2	75	118.2	189	300.3	477.3
4	60.3	94.5	150.6	240	381.9	607.2
5	47.1	75.9	121.2	192	305.1	485.4
6.3	37.41	60	95.4	152.7	242.1	384.9	612
8	29.55	47.4	75.6	120	191.1	303	483
10	23.7	38.4	60	96.6	152.7	243	385.8	614.1
12.5		30.6	48.3	76.8	122.1	192	309	491.1	619.2
16		23.7	37.5	61.2	95.4	151.5	241.2	384	485.7	610.2
20			30.6	48	76.8	121.2	192.9	309	387	488.1	615
25				38.4	60	97.5	154.5	245.1	309	390.9	492	621
32					47.4	75.9	120	192.9	242.1	305.1	384.9	485.1	611.1
40					38.4	61.2	96.6	153.6	193.8	244.2	308.1	387.9	489	617.1
50						48	76.8	123	154.5	195	246	310.2	391.5	493.2	622.2
63						38.4	61.05	97.5	123	154.5	195	246	311.1	391.8	494.1
80						30.6	48	76.8	96.6	122.1	153.6	193.5	243.9	308.1	388.8
100							38.4	61.2	77.7	97.5	123	155.4	195.9	247.2	310.8
125								49.2	62.1	78	98.4	123.9	156.6	198	249
160									48	61.02	76.8	97.5	122.1	154.5	195
200										49.2	62.1	78	97.5	123	155.4
Note: For 240 volts, double the distances.							Note: This table is for a 2 conductor cable.
			Wire Resistance Table
				Conductor	Ohms Per 1000 Feet
				Size,	Solid		Stranded
				AWG or	25°C		25°C
				kcmil	CU	AL	CU	AL
				24	26.2000	—...	—....	—...
				22	16.5000	—...	—....	—...
				20	10.3000	—...	10.5	—...
				19	8.2100	—...	—....	—...
				18	6.5100	—...	6.64	—...
				16	4.1000	—...	4.18	—...
				14	2.5700	4.22	2.62	—...
				12	1.6200	2.66	1.65	2.7
				10	1.0200	1.67	1.04	1.7
				9	0.8080	1.32	0.824	1.35
				8	0.6410	1.05	0.654	1.07
				7	0.5080	0.833	0.518	0.85
				6	0.4030	0.661	0.41	0.674
				5	0.3190	0.524	0.326	0.535
				4	0.2530	0.415	0.259	0.424
				3	0.2010	0.33	0.205	0.336
				2	0.1590	0.261	0.162	0.267
				1	0.1260	0.207	0.129	0.211
				1/0	0.1000	0.164	0.102	0.168
				2/0	0.0795	0.13	0.0811	0.133
				3/0	0.0630	0.103	0.0642	0.105
				4/0	0.0500	0.082	0.0509	0.0836
				250	—....	—...	0.0431	0.0708
				300	—....	—...	0.036	0.059
				350	—....	—...	0.0308	0.0505
				400	—....	—...	0.027	0.0442
				500	—....	—...	0.0216	0.0354
				600	—....	—...	0.018	0.0295
				750	—....	—...	0.0144	0.0236
				1000	—....	—...	0.0108	0.0177
				1250	—....	—...	0.00863	0.0142
				1500	—....	—...	0.00719	0.0118
				1750	—....	—...	0.00616	0.0101
				2000	—....	—...	0.00539	0.00885
				2500	—....	—...	0.00436	0.00715
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