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Ask The Trades › DIY Forum › Electrical Questions › Ring Final - Multiple Loops

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Ring Final - Multiple Loops (Read 13305 times)

LSpark Global Moderator Trade Member Author Offline Posts: 8069 Total Thanks: 3 For This Post: 0 London, UK United Kingdom Gender: Trade: Electrician	Re: Ring Final - Multiple Loops Reply #17 - Feb 15^th, 2009, 2:27pm I always knew he was stuck in the past
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Y3 GDPR opt-out Total Thanks: 3 For This Post: 0	Re: Ring Final - Multiple Loops Reply #18 - Feb 15^th, 2009, 6:40pm LSpark wrote on Feb 15^th, 2009, 2:27pm: I always knew he was stuck in the past Who?
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Zambezi GDPR opt-out Total Thanks: 3 For This Post: 0	Re: Ring Final - Multiple Loops Reply #19 - Feb 15^th, 2009, 7:11pm Quote: LSpark wrote on Feb 15^th, 2009, 2:27pm: I always knew he was stuck in the past Who? Chubby. When I started reading his post I almost fell off my chair, I thought he had finally posted something useful, I should have know better!
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LSpark Global Moderator Trade Member Author Offline Posts: 8069 Total Thanks: 3 For This Post: 0 London, UK United Kingdom Gender: Trade: Electrician	Re: Ring Final - Multiple Loops Reply #20 - Feb 15^th, 2009, 7:50pm Indeed!.. we can only live in hope
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dingbat

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Re: Ring Final - Multiple Loops
Reply #21 - Feb 17^th, 2009, 1:05pm

Quote:

When we got to ring circuits, it was explained to us that multiple loops, within a ring can be dangerous, in case of a fault.

What l do not understand is why...

This started a debate where several students who agreed that it was dangerous, with others saying that it wasn't.

My questions:

What effect would making an existing ring into two rings have on the circuit?

The only actual danger with interconnections (bridged rings) is the masking of discontinuities - that is, end-to-end resistances appear to confirm the existnce of an intact ring.

Quote:

Would this in effect allow the 32A breaker to operate faster?

No.

Quote:

Is it actually dangerous to do this? Or merely not recommended?

Not recommended - this is not how rings are configured.

TT is absolutely right about the effects of wear and tear on ring circuit test results.

There is very rarely any defensible justification for using rings.

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ChubbyPhaseWire GDPR opt-out Total Thanks: 2 For This Post: 0	Re: Ring Final - Multiple Loops Reply #22 - Feb 17^th, 2009, 4:46pm Quote: Quote: LSpark wrote on Feb 15^th, 2009, 2:27pm: I always knew he was stuck in the past Who? Chubby. When I started reading his post I almost fell off my chair, I thought he had finally posted something useful, I should have know better!
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plugwash Administrator Offline I love YaBB 1G - SP1! Posts: 1383 Total Thanks: 0 For This Post: 0 Trade: Not Specified	Re: Ring Final - Multiple Loops Reply #23 - Feb 19^th, 2009, 1:53am Afaict there are two issues with a "figure eight ring" The first as mentioned is it is very hard to test Also depending on the exact shape of the ring it may introduce major balance problems
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