CSLB C-46 Solar ContractorSafetyMedium
A solar technician is working in an attic space where existing wiring is present. Before starting work, they notice some older, brittle wiring with cracked insulation. What is the immediate and most appropriate action the technician should take?
- ATape over the cracked insulation to prevent further damage.
- BImmediately de-energize the circuit and report the hazard.
- CNotify the homeowner and ask them to hire an electrician later.
- DProceed with caution, avoiding contact with the damaged wiring.
Show answer & explanationAnswer & explanation
Correct answer: B. Immediately de-energize the circuit and report the hazard.
Damaged electrical insulation poses a serious shock and fire hazard. The immediate priority is to de-energize the circuit to eliminate the hazard and then report it to ensure proper repair by qualified personnel.
Why the other options are wrong
- A. Taping is a temporary and inadequate fix for brittle, cracked insulation and does not eliminate the underlying hazard.
- C. Notifying the homeowner is necessary, but the immediate safety action is to de-energize the circuit before any further work or notification.
- D. Proceeding with caution is insufficient and unsafe; the hazard remains.
Damaged Electrical Wiring Protocol
When damaged electrical wiring (e.g., cracked insulation) is encountered, the immediate protocol is to de-energize the affected circuit and report the hazard to a supervisor or qualified electrician.
- Cracked insulation exposes live conductors.
- Poses shock and fire hazards.
- De-energize first, then report for proper repair.
Memory trick: Cracked wire, immediate retired.