building

cable

checking

circuit

closeup

construction

current

danger

electric

electrical

electrician

energy

engineer

equipment

hand

home

house

industrial

inspection

installation

installing

interior

job

laborer

maintenance

manual

measure

measurement

occupation

outlet

people

person

plug

power

professional

repair

safety

screwdriver

service

socket

supply

technician

technology

tester

tool

voltage

wall

wire

work