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.
