what is the purpose of guarding electrical equipment with exposed parts operating at 50 volts or more?

To avoid the risk of accidental shock, live electrical components operating at 50 volts or more must be guarded with covers or other permanent barriers 

This is to prevent accidental contact by workers and their tools. 

Equipment can also be locked behind an enclosure, in a room, or at an elevated height 

Electrical circuits must be locked-out/tagged-out before electricians work on any equipment. is this true or false?

TRUE

A locked\tagged out procedure is used to ensure the equipment is turned off and it can’t be turned on without permission

this ensures the electricians will work safely because there won’t be electricity running in the equipment

Electrical circuits must be locked-out/tagged-out before electricians work on any equipment.

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