Overview
Unused openings in cabinets, boxes, and fittings are not closed with appropriate covers, plugs, or plates.
Electrical system design requirements require protection from shock. This is accomplished by enclosing live conductors and wires in protective housings. Integrity and protectiveness of the housing is compromised if appropriate covers, plugs, or plates are not installed over all unused openings.
The hazard in the Exhibit A isn’t readily visible in the photo. In this case, when the auditor was examining the hydrogen cylinder under the throw switches, a four-inch, unplugged hole was present in the end of the metal raceway above the cylinders. In addition to the electrical citation, the cylinders should not be stored in this location because they can become part of the electrical circuit.
Exhibit B, open holes were left in the breaker box. Sometimes people put electrical tape over the open spot for a breaker. This is not acceptable. It must be a manufactured cover. EHS auditors are NOT to open up electrical panel doors while performing routine inspections as it could present a potential electrical hazard. This is only cited where the panel door has been left open or is missing.
Exhibit C shows a junction box that has been left open. This would also not be citable if it is located at a height greater than 8’ above the floor.