3) before making an inspection, maintenance and repair of electrical equipment-electronic will need to cut the electricity supply to the device, such as removing the outlet. Release the switch, etc.
3) Prior to the repair of electrical equipment - electronic. To cut the electricity supply to the device, such as removing the disconnect switch or outlet.
3) before the repair electrical equipment - Electronics. Must cut off the electricity to pay to the device, such as take off the outlet, discharge switch, etc.