Load Connection; Load Wiring - Xantrex XPD 120-4.5 Operating Manual

Section 2. Installation

Load Connection

Load Connection
This section provides recommendations for load wires and covers single and
multiple load configurations.
Load Wiring Make load connections at the rear of the power supply at the positive (+) and
negative (−) terminals.
To select wiring for connecting the load to the power supply, consider the following
factors:
•
•
•
•
Insulation Rating Use load wiring with a minimum insulation rating equivalent
to the maximum output voltage of the power supply.
Current Carrying Capacity As a minimum, load wiring must have a current
carrying capacity greater than the output rating of the power supply. This ensures that
the wiring will not be damaged, even if the load is shorted.
maximum current rating, based on 450 A/cm
105 °C operation. Operating at the maximum current rating results in an
approximately 30 °C temperature rise 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 wiring rated for higher temperatures.
Table 2.2 Current Carrying Capacity for Load Wiring
Wire Size
(AWG)
30
insulation rating of the wire
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
2 , for various gauges of wire rated for
Wire Size
(AWG)
2.5 6
4 4
6 2
10 1
16 1/0
21 2/0
36
Operating Manual for XPD Series Power Supply
Table 2.2 shows the
Maximum Current
(A)
61
97
155
192
247
303