Safety checklist — Electrical

Electrical installation and wiring. Compliant with Québec's Construction Safety Code (CSTC) and CNESST standards.

Before work

11 items

✓
PPE worn: hard hat, insulated gloves, safety glasses, dielectric boots if required
✓
Circuits de-energized and confirmed with multimeterCritical
ℹ️ Multimeter verification mandatory — never rely on breaker alone
✓
Lockout performed — individual lock with unique key (RSST)Critical
ℹ️ RSST: individual lock with unique key, one per worker
✓
Lockout tag posted at panel
✓
Minimum approach distances respected if energized line (≥ 3 m if < 125 kV)
✓
Insulated tools in good condition
✓
Verify absence of voltage before each intervention
✓
Conductors grounded if required
✓
No live work unless CSA Z462 procedure approvedCritical
ℹ️ CSA Z462 standard — arc flash risk analysis required
✓
Temporary cables protected from crushing and moisture
✓
Arc flash: flame-resistant clothing if working near energized parts

After work

4 items

✓
Lockout removed per procedure — only installer removes their lock
✓
Continuity and insulation tests performed
✓
Panels closed and labeled
✓
Cable offcuts and waste sorted

+ 4 more checks

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Risks and prevention — Electrical

Electrocution and arc flash burns are among the most common causes of death on construction sites. The CSTC and Québec Electrical Code strictly govern electrical work. All work must be performed de-energized unless de-energizing creates a greater hazard.

Lockout/tagout of energy sources is mandatory before any work. Workers must verify zero energy using an appropriate tester before touching any conductor. Arc flash PPE (flame-resistant clothing, face shield) is required based on incident energy level.

Temporary site power distribution must be protected by GFCIs and inspected regularly. Damaged extension cords must be immediately removed from service.

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