background
blue
cable
cables
city
communication
conductor
conductors
connecting
connection
construction
current
danger
defense
electric
electric pillar
electrical
electricity
energy
equipment
fiber
high
industrial
industry
line
mess
messy
metal
network
old
pillar
pole
post
power
sky
steel
street
stretch
supply
system
technology
telephone
transformer
transmission
twist
urban
volt
voltage
wire
wiring