American Transmission Co.

Helping to keep the lights on, businesses running and communities strong. ®

Working with us

As the owner of electrical facilities, ATC is required by state and federal regulations to provide information on substation arc flash hazards to people who work on our facilities, including ATC employees, ATC contractors and the local electric companies.

Please direct your questions to ATC’s safety manager, Nick Robinson, at (262) 506-6940 or

Use the links below to access the most current tables of arc flash hazards, PPE/FR clothing risk categories and clothing effectiveness.

Available ARC/Flash Hazard Documents

Supplier/contractor information