Agilent Technologies n3304a, n3305a manual Stranded Copper Wire Ampere Capacity, Wire Size Ampacity

				Installation - 3
		Table 3-2. Stranded Copper Wire Ampere Capacity
	Wire Size		Ampacity	Notes:
AWG		Cross Section		1. Ratings for AWG-sized wires derived from MIL-W-
		Area in mm2		5088B. Ratings for metric-sized wires derived from
22			5.0	IEC Publication 335-1.
20			8.33	2. Ampacity of aluminum wire is approximately84% of
		0.75	10
18			15.4	that listed for copper wire.
		1	13.5	3. When two or more wires are bundled together, ampacity
16			19.4
				for each wire must be reduced to the following
		1.5	16
				percentages:
14			31.2
		2.5	25	2 conductors 94%
12			40
				3 conductors 89%
		4	32
				4 conductors 83%
10			55
				5 conductors 76%
		6	40
8		10	75	4. Maximum temperatures:
			63	°
6			100	Ambient = 50 C
				°
4			135	Conductor = 105 C

Table 3-3. Maximum Wire Lengths to Limit Voltage Drops

Wire SizeResistivityMaximum Length in Meters (Feet) to Limit Voltage Drop to 0.5 V or Less

	Cross
	Section
AWG	Area in	Ω/kft	Ω/km	5 A	10 A	20 A	30 A	40 A	50 A	60 A
	mm2
22		16.15		(6)	(3)	(1.5)	(1)	(0.77)	(0.62)	(0.52)
	0.5		40.1	2.5	1.2	0.6	0.4	0.31	0.25	0.21
20		10.16		(9.5)	(4.5)	(2)	(1.5)	(1.23)	(0.98)	(0.82)
	0.75		26.7	3.7	1.9	0.9	0.6	0.47	0.37	0.31
18		6.388		(15.5)	(7.5)	(3.5)	(2.5)	(2.0)	(1.57)	(1.30)
	1		20.0	5.0	2.5	1.3	0.8	0.63	0.50	0.42
16		4.018		(24.5)	(12)	(6)	(4)	(3.1)	(2.49)	(2.07)
	1.5		13.7	7.3	3.6	1.8	1.2	0.91	0.73	0.61
14		2.526		(39.5)	(19.5)	(9.5)	(6.5)	(4.9)	(3.46)	(3.30)
	2.5		8.21	12.2	6.1	3.0	2.0	1.52	1.22	1.01
12		1.589		(62.5)	(31)	(15.5)	(10.5)	(7.9)	(6.29)	(5.24)
	4		5.09	19.6	9.8	4.9	3.3	2.46	1.96	1.64
10		0.9994		(100)	(50)	(25)	(17)	(12.5)	(10.00)	(8.34)
	6		3.39	29	14.7	7.4	4.9	3.69	2.95	2.96
8		0.6285		(159)	(79)	(39.5)	(27)	(19.9)	(15.91)	(13.25)
	10		1.95	51	25	12.8	8.5	6.41	5.13	4.27
6		0.3953		(252)	(126)	(63)	(40)	(31.6)	(25.30)	(21.07)
	16		1.24	80	40	20	13.4	10.08	8.06	6.72
4		0.2486		(402)	(201)	(100)	(68)	(50.37)	(40.23)	(33.51)

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