Table 7 4. Wire Data - Ametek Elgar ReFlex Power Operation Manual

ReFlex Power™
Table 7-4. Wire Data
Copper Area,
AWG
6 0.133
8 0.0837
10 0.0526
12 0.0331
14 0.0208
16 0.0131
18 0.00823
20 0.00518
22 0.00326
W V
IRE OLTAGE
For applications where regulation is important, the contribution of the
Source wiring to voltage drop from the input terminals of the Active
Load modules to the Source must be considered. The wire gauge
must be selected to maintain an acceptable total voltage drop for the
load wiring under the maximum peak current. The resistance of the
Source wiring must be determined for the sum total length of the
output lead and the return lead. The total voltage drop is the sum of
the individual drops in the output and return leads. Table 7-4 gives the
resistance per meter (m) of various wire gauges at 20 °C and 100 °C.
Use the following equation to calculate the resistance for other wire
temperatures:
R = R20°C x [1 + 0.004 x (T - 20°C)]
where,
M380056-01 Rev L
Resistance,
Ω /m at 20°C
2
cm
0.0013
0.0021
0.0033
0.0052
0.0083
0.0132
0.0209
0.0333
0.053
D
ROP
R = resistance, Ω/m, at temperature T
R20°C = resistance, Ω/m, at 20°C
T = temperature of wire, °C
Resistance,
Ω /m at 100°C
0.0017 54
0.0028 40
0.0044 27
0.0069 21
0.011 16
0.0174 12
0.0276 10
0.044 7.5
0.07 5.5
Active Loads
Current Rating,
A for 30ºC Rise
7-23