Workplace Safety
Domain 13: Workplace Safety
This domain tests safe work practices for meter installation, testing and repair.
Core rules
- PPE includes insulated gloves, safety shoes, helmet and goggles; use arc-rated clothing where required.
- Isolation means switching off, locking out and tagging, proving dead with an approved voltage tester, and discharging capacitors.
- Use a work permit and clear communication with the utility control room; never work alone on live equipment.
- Keep test leads, tools and meters rated for the voltage; inspect them before use.
- Know first aid, CPR, emergency numbers and the nearest isolation point.
Worked example
To replace a single-phase meter, notify the consumer, isolate the supply, lock the switch, prove dead at the terminals, wear gloves and goggles, disconnect the load, remove the old meter, record its reading and seal number, install the new meter, check polarity, energize and verify registration. Reasoning: each step removes or controls a hazard before the next exposure.
Traps that cost marks
- Relying on a switch position instead of testing for dead.
- Working in wet conditions.
- Bypassing a meter.
- Failing to record the old reading.
- Leaving a public work area unbarricaded.