What would you check during a visual inspection of fixed wiring?

• A. Aesthetic appearance of the wiring.
• B. The load rating of each circuit.
• C. Cable condition, routes, support, protection against mechanical damage, signs of overheating or moisture.
• D. Manufacturer details of cables.

Answer: (C)

During a visual inspection of fixed wiring, you’re assessing the physical safety and integrity of the installation. The focus is on what you can see about the cables and how they’re installed. Look for the condition of the cables themselves—insulation intact, no cracks, brittleness, or signs of wear that could lead to exposure of conductors. Check the routes and supports to ensure cables follow proper paths, are securely fixed at appropriate intervals, and aren’t subject to abrasion, pinching, or strain. Ensure protection against mechanical damage is in place, such as proper containment in conduit or trunking and no exposure to sharp edges or potential impact. Look for signs of overheating, like discoloration, scorching, melted insulation, or a smell of hot insulation, and for moisture or dampness that could indicate water ingress. Any issues should be noted for repair or further investigation.

Aesthetic appearance alone isn’t a reliable safety indicator, so it isn’t the main concern of this inspection. The load rating isn’t determined by a visual survey; it requires calculations and labeling checks. Manufacturer details might be visible, but they aren’t the primary focus of a visual check for safe fixed wiring.