blue
cable
ceramic
close
conductor
connection
construction
current
danger
distribution
electric
electrical
electricity
energy
engineering
environment
equipment
generation
generator
high
industrial
industry
insulation
insulator
insulators
line
metal
network
pillar
plant
pole
power
sky
station
steel
structure
substation
supply
system
tall
technology
tower
transformer
transmission
up
volt
voltage
watt
wire
wires