aerial
background
cable
cabling
catenary
connection
construction
contact
copy space
distribution
electric
electric train
electrical
electricity
electrified
energize
energy
high
installations
insulator
line
live
mast
metal
network
overhead
pantograph
pattern
pole
power
pylon
rail
railway
route
sky
supply
system
technology
tower
traction
train
transmission
transport
transportation
trolley
vehicle
voltage
wire
wiring