Agilent Technologies Serials 2934A-01821 to 01825 3026A-01921 and above Agilent 6032A Ω/kft, Ω/km

per lead. Table 3-2 lists resistivity for various wire sizes and the maximum lengths that may be used to limit voltage drop to

0.5volts for various currents. Lengths listed are the sum of the lengths of the ( + ) and ( - ) load wires. Lengths are given in meters and (feet).

To determine maximum lengths (in meters or feet) for currents not listed, use the formula:

maximum length =

500

current x resistivity

where current is expressed in amps and resistivity is expressed in ohms/kilometer or ohms/1000 feet. If load regulation is critical, read Remote Voltage Sensing in the following section.

Table 3-2. Maximum Wire Lengths To Limit Voltage Drops

Wire Size

Resistivity

Maximum Length In Meters (Feet)To Limit Voltage Drop To 0.5V Or Less

AWG

Cross-

Section Area

In mm2

Ω/kft

Ω/km

5 A

10A

17 A

22		16.15		(6.19)
	0,5		40.1	2,5
20		10.16		(9.8)
	0,75		26,7	3,7
18		6.388		(15.6)
	1		20,0	5,0
16		4.018		(24.8)
	1,5		13,7	7,3
14		2.526		(40)
	2,5		8,21	12,2
12		1.589		(62.9)
	4		5,09	19.6
10		.9994		(100)
	6		3,39	29.5
8		0.6285		(160)
	10		1,95	51,2
6		0.3953		(252)
	16		1,24	80.6
4		0.2486		(402)
	25		0,795	125.7
2		0.1564		(639)
	35		0,565	176.9
	50		0,393	254.4
0		0.09832		(1017)

Wire sizes of AWG #14 (2,5mm2) or smaller are normally used only for sense leads.

(3.09

1.2

(5)

1,8

(7.8)

2,5

(12.4)

3,64

(19.7)

6,1

13.46)

9,8

(50)

14,7

(79.5)

25,6

(126.5)

40,3

(201)

62.8

(319)

88.5

127

(508)

(1.82)

.73

(2.8)

1.1

(4.6)

1.4

(7.3)

2.1

(11.6)

3.5

(18.5)

5.7

(29.4)

8.6

(46.7)

15

(74.4)

23.7

(118)

37

(188)

52

74.8

(299)

Remember while calculating load wire size that the wire must be large enough not to overheat while carrying the current that would flow if the load were shorted.

Table 3-3 lists current-carrying capacity (ampacity) for various sizes of stranded copper wire.

The bus bars are covered by an impact-resistant plastic cover, which is secured to the unit with four M4 x 8 screws. Be certain to replace the cover after making connections.

36Operating Instructions