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Step 4Wire the low voltage side
Decide if you are going to include a power contactor and case safety switch. If so, use the first schematic. If not, then use the second schematic.
Wire the supply starting with the AC connector, fuse holder, switches, variac and power contactor.
Test each stage of your build to make sure your wiring is correct.
Next wire up the OBT and test the range of the variac.
To test the output of the OBT, hold a GROUNDED screwdriver near the OBT output terminal.
If you see an arc, good. Power off the supply and disconnect it from Mains and move to the next step.
Wire the supply starting with the AC connector, fuse holder, switches, variac and power contactor.
Test each stage of your build to make sure your wiring is correct.
Next wire up the OBT and test the range of the variac.
To test the output of the OBT, hold a GROUNDED screwdriver near the OBT output terminal.
If you see an arc, good. Power off the supply and disconnect it from Mains and move to the next step.
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