Xantrex XKW 12-150, Operating Manual

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Installation
Load Connection
38
Operating Manual for XKW 3kW Series Power Supply
Load
Conductor
Ratings
As a minimum, load wiring must have a current capacity greater than the output
current rating of the power supply. This ensures that the wiring will not be damaged
even if the load is shorted.
Table 2.3 shows the maximum current rating, based on
450 A/cm
2
, for various gauges of wire rated for 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 2.3
Current Carrying Capacity for Load Wiring
Load Wiring
Length for
Operation
with Sense
Lines
For applications using remote sensing, the voltage drop across each load line must
be limited to 1V or less.
Figure 2.4 , shows the maximum allowable wire length that
may be used for a given load current and wire size to ensure that this limit is not
exceeded.
Figure 2.4
Maximum Load Wire Length
Wire Size
(AWG)
Maximum Current (A)
Wire Size
(AWG)
Maximum Current (A)
20 2.5 6 61
18 4 4 97
16 6 2 155
14 10 1 192
12 16 1/0 247
10 21 2/0 303
8 36
TM-25OP-01XN.book Page 38 Monday, April 5, 2004 8:58 AM