abstract
black
board
cable
check
chip
circuit
computer
construction
control
electric
electrician
electronic
employee
energy
engineer
equipment
factory
field
helmet
icons
illustrations
industry
item
job
line
maintenance
man
network
panel
power
production
professional
service
set
sign
station
substation
switchgear
symbol
system
team
tech
technician
technology
tool
work
worker