assemble
automatic
block
board
cable
cabling
checking
circuit
connect
connection
contact
control
copper
current
distribution
electric
electrical
electrician
electricity
energy
engineer
engineering
equipment
industrial
industry
installation
machinery
main
measure
meter
panel
plastic
power
protection
relay
repair
repairman
safety
service
supply
switch
system
technical
technician
technology
terminal
testing
voltage
wire
wiring