attention
black
bolt
building
caution
circuit
connection
construction
contractor
danger
development
driver
efficiency
electric
electrical
electrician
electricity
electrification
electro
elements
energy
engineer
engineering
fix
high
home
house
icon
illustration
industry
install
installation lectrique
lightning
line
maintenance
mechanical
minus
plug
plus
power
protection
repair
safety
screw
screwdriver
service
set
short
sign
technician
technology
tools
under
upgrade
voltage
warning
white
work