abstraction
air
blue
bottom view
bright
city
clear
clouds
communication
connection
construction
contacts
current
distribution
ecology
electrical energy
electricity
electricpower transmission lin
equipment
geometry
high
hitch
industrial
industry
insulators
landscape
metal
modern
mounting
nature
networks
operation
power
saturated
sky
squares
supply
supports
system
technology
transfer
transmission
triangles
voltage
weather
white
wires