機器
amperage
background
black
building
cable
circle
connect
danger
discharge
earth
earthing
electrical
electricity
energy
equipment
flat
ground
grounding
hazard
home
icon
illustration
industrial
maintenance
parts
plug
power
protection
repair
rules
safe
safety
shadow
sign
signify
sources
switch
symbol
technology
tension
terminal
vector
volt
voltage
wire
yellow