Electrical safety — Letting an unqualified person help
Qualified persons are those permitted to work on or near exposed energized parts. They have specific training and must never allow an unqualified person assist them in their work.
It happened like this
John, an electrical qualified person and company electrician, was troubleshooting a paper coating machine and discovered that a circuit breaker was malfunctioning. He was in the process of moving the wires from the malfunctioning circuit breaker to an unused breaker located inside a panelboard.
Adam, the coating machine operator, had removed the front panel from the adjacent panelboard where the unused circuit breaker was located.
Lockout/tagout procedures were not implemented because deenergizing the machine would have caused the coating solutions to cool and clog the machine parts.
John had run the wires from the malfunctioning circuit breaker up and over the top inside of the panelboard to the adjacent open panelboard. Adam asked John if he should pull the wires through. John told him to pull the wires. While reaching into the panelboard, Adam’s left arm touched an energized busbar carrying 2000 amperes and he was electrocuted.
What are the issues?
- Exposed electrical wires.
- Violation of company safety policies.
- Employee fatality.
What did Adam do wrong?
- Took the front panel of the panelboard off.
- Asked John if he should pull the wires, thinking he was going to help.
What did John do wrong?
- Exposed Adam to electrical parts and didn’t inform him of work procedures.
- Allowed an unqualified person to work near electrical parts, resulting in electrocution.
- Didn’t use personal protective equipment (PPE).
What do you think should happen next?
- Discipline John.
- Provide additional training on:
- Procedures for working with exposed electrical parts, and
- PPE.
Training tips
OSHA defines a qualified person as an employee who is familiar with the construction and operation of the equipment and the hazards involved. Whether an employee is considered qualified will depend upon various circumstances in the workplace. Only “qualified” persons can work directly with exposed energized parts.
“Qualified” persons must be trained in and familiar with:
- How to avoid electrical hazards.
- The electrical equipment and hazards of the work being performed.
- How to distinguish exposed “live” parts from other parts of electrical equipment.
- How to determine nominal voltages of parts.
- The specified clearance distances.
Key to remember
Only qualified persons can work with exposed energized parts and can’t allow unqualified persons to assist them.





















































