Installation
Load Wiring
Load Wiring
When connecting load wiring to the power supply, consider the following factors:
•
Current carrying capacity of the wire
•
Maximum load wiring length for operation with sense lines
•
Noise and impedance effects of the load lines
Current
As a minimum, load wiring must have a constant capacity greater than the output
Carrying
current rating of the power supply. This ensures that the wiring will not be damaged
even if the load is shorted. Table 2.4. shows the maximum current rating, based on
Capacity
450A per square centimeter, for various gauges of wire rated for 105°C operation.
Operating at the maximum current rating results in a temperature rise of
approximately 30°C for a wire operating in free air. Where load wiring must operate
in areas with elevated ambient temperatures or bundled with other wiring, use larger
gauges or higher temperature-rated wiring. For high current applications,
custom-designed bus bars are typically used. To increase the current carrying
capability, use parallel cables.
Table 2.4 Current Carrying Capacity for Load Wiring
Wire Size
(AWG)
1.
Single insulated conductors in free air, 30°C
48
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Maximum Current (A)
20
2.5
18
4
16
6
14
10
12
16
10
21
8
36
6
61
1
Wire Size
Maximum Current
(AWG)
(A)
4
2
1
1/0
2/0
3/0
4/0
250MCM
Operating Manual for XDC Series Power Supply
97
155
192
247
303
350
405
455