Ring Final Circuit wired in 4 core SWA

[Wilko]

One ring to rule them all ... perhaps JRRT was a spark?

 

[Pete999]

One ring to rule them all ... perhaps JRRT was a spark?

Go on JRRT?

 

[SoulTy1066]

The RFC is already a bit of a thing and this is a complication of it. I was going to spell that with a b... but refrained ... As the RFC relies on distributed loads that could be a problem (?). Maybe that could be simulated by alternating outlets across the pairs (if that makes any sense). Then there's the cpc aspect. Armour is fine for that in theory, but will depend on the mcb and Zs.

Type C 32amp RCBO with Zs of 0.72 so over on Max Zs.

 

[SoulTy1066]

It means RFC wired in 4 core cable 4 cores to 1st socket 1 pair connected to anothe pair going to the next socket until you reach the last one where you have 2 L and 2 N, ergo a RFC wired in 4 core.

You've got it... If it had been glanded straight into the metalclad sockets and used piranha nuts it would of been better.

 

[westward10]

Type C 32amp RCBO with Zs of 0.72 so over on Max Zs.

Maybe poor circuit design but the rcbo will provide fault protection.

 

[Pete999]

You've got it... If it had been glanded straight into the metalclad sockets and used piranha nuts it would of been better.

When you look at this type of system in the cold light of day regarding the earthing/cpc and ignore the L and N conductors the and the Armour being suitable for use as a cpc, then there isn't much difference from that to a metal conduit install. You don't run a cpc in metallic conduit you fly lead from the earth stud in the box to the earth terminal on the socket face plate, no difference in doing the same with the SWA install is there?

 

[HandySparks]

Go on JRRT?

J. R. R. Tolkien - Wikipedia - https://en.wikipedia.org/wiki/J._R._R._Tolkien

 

[Des 56]

If this was a standard 4mm radial without the addition of an extra help for the live and neutral (in the form of another 2 cores to assist) maybe the collective eyebrows would not be so lifted

 

[westward10]

If this was a standard 4mm radial without the addition of an extra help for the live and neutral (in the form of another 2 cores to assist) maybe the collective eyebrows would not be so lifted

Wash your mouth out it is a 13A socket and MUST be a ring final

 

[Des 56]

Wash your mouth out it is a 13A socket and MUST be a ring final

Prefer to stand at the back of the class

 

[mickfred]

Never uses two core swa for sockets, but when i use metal clad socket ( am waiting to hear "why") but i alway take the paint off in the inside round the knockout (it reassure me)

 

[Deleted member 26818]

So let me get this straight.
If we install conduit, we don't need banjos or piranha nuts, but if we use SWA, we do?

 

[Wilko]

Maybe poor circuit design but the rcbo will provide fault protection.

I think 32B would fit better, and for clarity I'm talking about mcb not items of clothing ...

 

[PEG]

I'm loving this threads tombola randomness

 

[Pete999]

Never uses two core swa for sockets, but when i use metal clad socket ( am waiting to hear "why") but i alway take the paint off in the inside round the knockout (it reassure me)

Should be done on ALL metal enclosures, where conduit or SWA installations, lost count of the number of hours I spent filing coupler ends flat, filing lock nuts, cleaning paint from enclosures, not for reassurance, but for a good contact, a lost practice these days I'm afraid.