background
blue
business
cable
checking
construction
electric
electrical
electrician
electricity
energy
engineer
engineering
equipment
facility
guy
hard
hardhat
hat
helmet
industrial
industry
job
labor
line
maintenance
male
man
occupation
people
person
phone
plan
pole
power
professional
protection
repair
safety
service
sky
station
substation
tablet
talking
technology
tower
voltage
work
worker