False assumptions about temporary power can permanently injure you. Here are four assumptions you should never make.
- “It’s temporary, so a lower standard of care and workmanship apply. We’re going to rip it out later, anyhow.” If anything, you should be more careful with temporary power work because the wiring isn’t as well-protected as permanent wiring.
- “If there’s a fault, the breaker will open and prevent any problems.” The breaker will trip only if the fault path has a low enough resistance for the current to reach the trip threshold. The breaker won’t protect you from electrocution, and it won’t prevent an arc flash.
- “If we really needed task lighting, it would be on the work order to set it up.” If lighting is inadequate for you to work safely and efficiently, stop work and fix that problem. One small mistake could be your last mistake.
- “The equipment’s good.” Always inspect temporary power equipment before using it. For example, ensure generators are properly ventilated and portable cords have undamaged jackets.
