An Assured Equipment Grounding Conductor Program, or AEGCP, prevents ground-fault electrocution and electrical shock on construction sites and other work environments where temporary wiring is used. It serves as an alternative to ground-fault circuit interrupters (GFCIs), giving employers a second compliant option for protecting workers from dangerous electrical faults.
How Ground Faults Harm Workers
A ground fault occurs when electrical current escapes its intended path and flows through a person’s body to reach the ground. This can happen when a power tool has a damaged cord, a missing grounding pin, or a faulty internal connection. Even a small amount of current traveling through the body can cause serious injury or death. On construction sites, where tools are moved constantly, exposed to weather, and plugged into temporary power sources, the risk of ground faults is significantly higher than in permanent buildings with fixed wiring.
GFCIs are the most common protection method. They detect tiny imbalances in electrical current and shut off power in a fraction of a second. An AEGCP takes a different approach: instead of relying on a device to cut power automatically, it uses a systematic inspection and testing program to ensure that grounding connections on all cord sets, receptacles, and equipment are intact and functioning properly before workers ever use them.
What an AEGCP Actually Requires
The program is governed by OSHA standards and has specific minimum requirements that employers must follow. At its core, an AEGCP ensures that every piece of equipment connected to temporary power has a continuous, unbroken grounding path. If a fault occurs, the grounding conductor carries the stray current safely back to the electrical panel and trips the breaker, rather than letting that current pass through a worker.
To maintain this protection, the program requires regular testing and visual inspections of all cord sets, attachment caps, plugs, receptacles, and equipment connected by cord and plug. Each piece of equipment must be tested before first use, after any repair or incident that could have damaged it, and at regular intervals (typically every three months at minimum). Any equipment that fails inspection must be immediately removed from service and tagged so no one uses it until it is repaired and retested.
Records of all tests must be kept and made available to OSHA inspectors. The program also requires a competent person to be designated as responsible for implementing and overseeing the entire process.
AEGCP vs. GFCI Protection
Both methods prevent the same hazard: electrical current flowing through a worker’s body during a ground fault. The key difference is how they accomplish it. A GFCI is a reactive device that detects a fault and cuts power almost instantly. An AEGCP is a proactive maintenance program that prevents faults from occurring in the first place by ensuring grounding connections stay intact.
Employers can choose one method or the other, but they cannot skip both. On construction sites using temporary wiring, OSHA requires either GFCIs on all outlets or a written, fully implemented AEGCP. Some employers use GFCIs as the default and reserve AEGCPs for situations where GFCIs are impractical, such as certain high-amperage equipment or environments where GFCI devices trip frequently due to long cord runs or moisture.
Why Proper Implementation Matters
An AEGCP only works if it is followed rigorously. Unlike a GFCI, which provides automatic protection regardless of whether anyone remembers to inspect equipment, an AEGCP depends entirely on consistent human action. If tests are skipped, records are not maintained, or damaged equipment slips back into use, workers lose their protection entirely. OSHA citations for inadequate AEGCPs are common on construction sites, and they often stem from gaps in documentation or missed testing intervals rather than a complete absence of the program.
For workers, the practical takeaway is straightforward. If your job site uses an AEGCP instead of GFCIs, every tool and cord you plug in should have a visible record of recent testing. If you notice damaged cords, missing grounding prongs, or equipment without current test documentation, that equipment should not be used until it has been inspected and cleared by the competent person running the program.