Always Turn the Power OFF
Precautions while using Power Supply
Always Turn the Power OFF
Any time youre working on an electrical circuit in your home, turn the power off at the circuit breaker to ensure no voltage is flowing through the wires. If for some reason you cannot turn off power to the circuit, you may want to have a licensed electrician do the job if you are nervous about working on live electricity.
Precautions while switching off or shutting down the circuit
General
Precautions while modifying the circuit
Before you begin
Operating environment
Startup and Maintenance Precautions
Operation
Grounding
Precautions against Ingress of Metal Fragments
Removing a Power Supply
Prepare the Work Area
Ensure Your Tools are Functional More ...
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