blue
cable
cabling
concept
conjoin
connecting
connection
construction
contact
danger
detail
distribution
electric
electrical
electricity
electrified
energy
high
industry
insulator
line
metal
metallic
nobody
outdoors
pole
power
pylon
rail
railroad
railway
sky
steel
structure
supply
technology
telegraph
tracks
train
transformer
transport
transportation
travel
up
volt
voltage