Load Wiring; Current Carrying Capacity - Xantrex XPR 10-600 Operating Manual

Load Wiring

When connecting load wiring to the power supply, consider the following factors:
•
•
•
Current As a minimum, load wiring must have a constant capacity greater than the output
current rating of the power supply. This ensures that the wiring will not be damaged
Carrying
even if the load is shorted.
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 2.3 Current Carrying Capacity for Load Wiring
Wire Size
(AWG)
1.
Release 1.1
Current carrying capacity of the wire
Maximum load wiring length for operation with sense lines
Noise and impedance effects of the load lines
Maximum Current (A)
20
18
16
14
12
10
8
6
Single insulated conductors in free air, 30°C
Table 2.3. shows the maximum current rating, based on
Wire Size
(AWG)
2.5
4
6
10
16
21
36
61 250MCM
1
Maximum Current
(A)
4
2 155
1 192
1/0 247
2/0 303
3/0 350
4/0 405
455
Installation
Load Wiring
97
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