blue
bunch
cable
catenary
clear
connecting
connection
construction
contact
danger
dangle
day
detail
distribution
electric
electrical
electricity
electrified
energy
high
industry
line
nobody
outdoors
overhead
overhead contact line
pole
power
pylon
rail
railway
row
sky
steel
supply
suspend
technology
telegraph
tower
train
transformer
transport
transportation
trolley
utility
volt
voltage
wire
wiring