blue
cable
closely
communication
component
conductor
conversion
converter
current
danger
day
device
distribution
electric
electrical
electricity
energy
engineering
equipment
high
industrial
industry
insulation
insulator
insulators
iron
isolator
line
metal
nobody
old
outdoors
pole
power
reduce
rural
sky
station
steel
structure
substation
supply
technology
tension
transformer
transmission
vintage
volt
voltage
wire