assemble
automatic
automation
background
blue
board
box
bus
business
cable
center
circuit
closeup
color
component
connect
connection
connector
control
distribution
electric
electrical
electricity
energy
equipment
factory
fuse
industrial
industry
installation
light
line
macro
manufacturing
metal
network
panel
plug
power
production
red
row
switch
system
technical
technology
voltage
wire
wiring
work