adult
background
blue
bright
cable
caucasian
current
drafting
electric
electricians
electricity
energy
engineer
equipment
factory
generation
grid
happy
helmet
high
industry
install
line
male
man
nature
outdoors
paper
people
plant
power
professional
pylon
safety
sky
smiling
steel
substation
technician
technology
tension
testing
tower
transmission
uniform
voltage
wire
work
worker
young