Electrical Safety

Electrical equipment causes the largest number of workplace fires. Extinguishers with Class C ratings are required where energized electrical equipment fires may be encountered.

A nonconducting extinguishing agent is needed for a fire involving or surrounding electrical equipment. Whenever possible, electrical equipment should be de-energized before an extinguisher is used on a Class C fire.

Monoammonium phosphate agent is inexpensive and electrically non-conductive but leaves a powdery residue that can damage equipment.

Carbon Dioxide is a colorless, odorless gas that leaves no residue. However the heavy gas settles out limiting discharge range to a distance of eight feet.

To minimize risk of electrical fires the following basic rules must be followed.

Replace wires when insulation gets frayed or worn

Use the right fuse for the system

Use extension cords properly rated (insulation and maximum voltage) for the activity

Ground all equipment (3-pronged plugs provide additional grounding)

Flammable solvents must be kept away from electrical equipment