attention
background
banner
beware
black
blackout
cable
caution
city
connection
dangerous
dark
design
discharged
electric
electrical
electricity
energy
failure
flat
graphic
hazard
icon
illustration
label
light bulb
lightning
line
night
notice
power
power outage
protection
repair
risk
safety
security
service
shock
sign
state of emergency
stripes
support
symbol
triangle
turn off
voltage
warning
yellow