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C561M-I (4/08) 5
FUSE INSTALLATION
The WCS1-4 power supply is shipped from the factory with a 1.6 A fuse installed for 100/120 VAC input
power. To use input power of 240 VAC, change the 1.6 A fuse to a 500 mA fuse (supplied).
To change the fuse, remove the lid to the fuse holder (refer to Figure 4) located inside the power supply
and then install the new fuse. Store extra fuses (supplied) in the spare fuse holders.
INPUT POWER WIRING
To install the input power wires to the WCS1-4 power supply, refer to Figure 4 on page 6 and perform the
following steps:
1. Determine the size of the input wire needed.
2. Pull the wiring into the WCS1-4 through the conduit fitting.
3. Attach the line input power wire to the 100 V, 120 V, or 240 V connection on the Primary Line Input
connector strip. Attach the neutral wire to the COM connection on the same strip.
NOTE: If the mains power is isolated or does not have a neutral and hot polarity, it is not critical.
All primary inputs of the power supply are isolated from the chassis and earth ground.
4. Attach the input ground wire to the No. 6 ground stud, located between the conduit holes, and then
tighten the wire with the nut and washer (supplied).
WARNING: The WCS1-4 does not have an on/off switch. Turn off power at the circuit breaker
before wiring the power supply.