You've hit on some very valid points and reasons why you might think loose wiring is better. However, there are several strong reasons why the code requires securing cables: Mechanical Protection

While a cable might move when first hit by a nail/screw, repetitive movement over time can cause abrasion and damage to the insulation, eventually leading to a short circuit or ground fault. Staples, used properly, prevent this movement and protect the cable. It's also worth noting that the code specifies the minimum distance for electrical cables from surfaces, and this protects cables from being easily pierced by nails or screws.

Strain Relief

Securing cables at intervals prevents excessive strain on the termination points (outlets, switches, panels). Without support, the weight of the cable itself can pull on these connections over time, loosening them and creating potential hazards. This is especially important with heavier gauge wires.

Professionalism and Predictability

Imagine the chaos if every electrician ran cables however they pleased! Securely wiring allows for consistent installations that other professionals can easily understand and work with in the future.

Fire Safety

In the event of a short circuit, unsecured cables can whip around and potentially ignite nearby flammable materials. Securing them helps contain any sparks or heat generated.

Code Enforcement

The code provides a clear, verifiable standard for electrical installations. It's easier for inspectors to check that cables are properly secured than to assess the subjective "risk" of loose cables in a particular location.

Addressing Your Points



Nail/Screw Strikes

You're right, a loose cable might move. But as mentioned above, over time, that movement can be detrimental. Properly installed nail plates/nail guards where cables pass through studs near the surface help prevent screws and nails from damaging cables.*

Rewiring

Your point about pulling new cables is a valid consideration, but in practice, it's often more complicated than it sounds. Old cables can become brittle or stuck, making them difficult to use as pull strings. Plus, if the original installation wasn't done properly, there could be unforeseen obstacles. While staples create an additional step, the overall benefits outweigh the inconvenience in most cases.

Conclusion:

While it might seem like a simple thing, securing electrical cables is a crucial part of a safe and reliable electrical system. The code prioritizes long-term safety, strain relief, and predictable installations, even if it adds a small amount of work during initial installation or future modifications. The aim is to reduce the risk of electrical fires, shocks, and other hazards. Flag for review