The reason other counties don’t use ring circuits isn’t because they’re less safe or inherently worse in any way, which the term “substandard” clearly implies.
Yes. That is the reason.
If a ring circuit suffers a break in the live wire anywhere along its length, it fails dangerous. It will appear to be functioning properly right up until the wiring in the wall catches fire.
The only way that ring circuits could be considered somewhat safe is if they were clearly labeled and regularly tested for continuity.
When the live wire in a branch circuit breaks, the only path for current is severed. Anything prior to the fault continues to function as designed, anything past the fault does not function at all.
In a ring circuit, there are two paths. When the live wire is severed, only one path is broken. The other path continues to function, but it is now able to draw current greater than what the wire is capable of carrying. Everything on both sides of the fault will continue to function, but not as designed.
Yes. That is the reason.
If a ring circuit suffers a break in the live wire anywhere along its length, it fails dangerous. It will appear to be functioning properly right up until the wiring in the wall catches fire.
The only way that ring circuits could be considered somewhat safe is if they were clearly labeled and regularly tested for continuity.
And how exactly doe the same exact thing not ally to a branch Circuit suffering a break?
When the live wire in a branch circuit breaks, the only path for current is severed. Anything prior to the fault continues to function as designed, anything past the fault does not function at all.
In a ring circuit, there are two paths. When the live wire is severed, only one path is broken. The other path continues to function, but it is now able to draw current greater than what the wire is capable of carrying. Everything on both sides of the fault will continue to function, but not as designed.