AMETEK CSW Series User Manual
Page 34
User Manual
California Instruments
34
CSW Series
C
OLUMN
1:
SIZE
(AWG)
C
OLUMN
2:
AMPERES
(MAXIMUM)
C
OLUMN
3:
OHMS/100 FEET
(ONE WAY)
C
OLUMN
4:
IR DROP/100 FEET
(COL. 2 X COL. 3)
14
15
0.257
3.85
12
20
0.162
3.24
10
30
0.102
3.06
8
40
0.064
2.56
6
55
0.043
2.36
4
70
0.025
1.75
2
95
0.015
1.42
1/0
125
0.010
1.25
3/0
165
0.006
1.04
Recommended Wire Gauge Selection Guide
The output power cables must be large enough to prevent a total voltage drop exceeding 1% of
the rated output voltage between the power source and the load. Table 3-1 shows the AWG size
of the cables that may be used. Cable lengths must not exceed twenty-five (25) feet. For lengths
greater than 25 feet, calculate the voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
LOAD CURRENT
WIRE GAGE
22 AMPS
10 AWG
37 AMPS
8 AWG
74 AMPS
4 AWG
111 AMPS
2 AWG
Table 3-1: Wire Sizes