For those employees whose work may expose them to the hazard of being
near or exposed to electrical parts at 50 volts or more to ground.
For those employees who perform mechanical work on or near exposed electrical
parts and perform only Like-for-Like substitution of electrical devices operating at 50 volts or more to ground.
For those employees who perform electrical work on or near exposed electrical
parts operating at 50 volts or more to ground but not exceeding 600 volts nominal.
LEVEL 4
For those employees who work on or near exposed electrical parts operating
at over 600 volts.
