Why this matters
Take a few minutes before the task to cover Portable Generators & Temporary Power. The main concern is shock, carbon monoxide and improper connections, so make sure everyone sees the exposure and knows the plan before work begins. Electrical incidents often happen when a circuit is assumed to be dead, temporary wiring is damaged or overloaded, or the work moves closer to energized parts than planned. Treat verification, protection and working clearance as part of the task, not paperwork that happens somewhere else.
A scenario to discuss
The setup for Portable Generators & Temporary Power is ready when water, damaged cord insulation, metal access equipment, or another trade changes the electrical exposure. The tool still runs and no breaker has tripped. What does the crew need to stop and correct?
Before work starts
- Identify the circuit/equipment and the isolation or protective device that applies to today’s task.
- Inspect cords, plugs, enclosures and temporary wiring in the work area before energizing tools/equipment.
- Establish required working clearances and keep conductive materials/water out of the exposure zone.
- Place generators where exhaust cannot enter occupied or enclosed spaces.
- Use grounding/bonding and GFCI protection as required by the setup and applicable rules.
Common failure points
- Treating “off” as the same thing as verified de-energized.
- Using damaged or improvised temporary wiring because it still powers the tool.
- Letting water, metal access equipment or another trade move into the electrical clearance.
Safe work sequence / controls
- Place generators where exhaust cannot enter occupied or enclosed spaces.
- Use grounding/bonding and GFCI protection as required by the setup and applicable rules.
- Never backfeed building wiring through an improvised connection.
- Protect cords from damage and shut down equipment before refueling when required by the manufacturer.
- When the planned control for shock, carbon monoxide and improper connections is not in place or stops working, stop the task and correct it before the crew continues.
Stop and reset the plan if...
- The circuit, conductor or equipment cannot be positively identified or its status is uncertain.
- Cords, plugs, enclosures, GFCI protection or grounding/bonding are damaged or do not match the planned setup.
- Water, metal access equipment, nearby energized work or another condition changes the electrical exposure.
Questions worth asking the crew
- What is energized, what is de-energized, and how was that status verified instead of assumed?
- What GFCI, grounding, isolation, guarding, or other protective device is controlling the electrical exposure today, and how was it checked?
- Where could water, conductive material, damaged cords, or another trade change the electrical risk while we are working?
- What clearance or approach boundary applies here, and how will the crew keep it clear through the whole task?
- Has anyone found a circuit, cord or piece of equipment in a different electrical condition than expected? What clue caught it before contact?
Make it real on the job
Show the disconnect/protective device or test method being relied on and identify the energized boundary.
Close the talk
Before the crew starts, everyone should be able to explain the hazard, point to the control being used today, and name the condition that would make the work stop.
Related authoritative reference
29 CFR 1926.404(b)(1) + 1926.405 - GFCI/Temporary Wiring Protection · Open reference ↗
This is a practical discussion guide, not a substitute for required training, a competent person, permits, manufacturer instructions, employer procedures, or applicable federal/state/local requirements. Adapt it to the actual task and conditions.
