abstract
amps
background
black
blue
cable
city
cloudy
color
connection
contact
cross
crosshair
current
danger
dark
day
electric
electrical
electricity
energy
gray
group
high
industrial
industry
join
junction
line
mess
metal
metallic
nobody
old
outdoor
power
sky
steel
strained
supply
tech
technology
transmit
transport
transportation
trolley
trolleybus
urban
voltage
wire