Load Connection
TM-F1OP-C1XN-01 2-13
Load Connection
This section provides recommendations for load wires and how to
connect them for both single and multiple load configurations.
Load Wiring
To select wiring for connecting the load to the power supply, consider the
following factors:
• 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
Insulation Rating
Use load wiring with a minimum insulation rating equivalent to the
maximum output voltage of the power supply. For example, select
TEW-105, 105 °C, 600 V wiring for use with a 600 V, 2 A model power
supply.
Current Carrying Capacity
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 2-4 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.
TM-F1OP-C1XN-01.book Page 13 Thursday, October 25, 2007 9:04 PM
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