accident
alert
arrow
attention
banner
beware
black
bolt
button
cable
caution
danger
electric
electrical
electricity
energy
flash
glyph
hazard
high
home
icon
illustration
industrial
industry
label
light
lightning
monochrome
night
power
pylon
risk
safety
security
shock
sign
sticker
symbol
technology
tower
transmission
triangle
volt
voltage
warning
wire
yellow