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how long can a spur cable be

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There are no specific regs as to how long it is.
However it will have to meet regulations regarding volt drop calculations.
 
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If if longer than a drum of 2.5 then its too far...:cool:
In all seriousness if we are talking domesticated dwellings then it’s unlikely to ever exceed maximum permissible lengthy
 
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oldandtired said:
I want t run a spur(using 2.5mm cable) from a socket on a ring main . how long can the spur cable be?
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Lots of imponderables to deal with Voltage at final destination ( have any volt drop calculations been done?)
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oldandtired said:
not sure how to do v/drop calc , the spur will be approx 4m. i want to run a tumble dryer from the spurred socket
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What is the Electrical load of the tumble dryer?
 
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if you're going to run 4m 2.5 cable, why not run 2 cables and extend ring in existing socket using wagos or ideal in line splice connectors. it's less than a fiver for extra materials
 
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Pete999 said:
Lots of imponderables to deal with Voltage at final destination ( have any volt drop calculations been done?)
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What is the Electrical load of the tumble dryer?
[/QU
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telectrix said:
if you're going to run 4m 2.5 cable, why not run 2 cables and extend ring in existing socket using wagos or ideal in line splice connectors. it's less than a fiver for extra materials
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thought about extending ring but nearest point to break into it easily and fit conector block will be 6/7m . The 4m length would be fed from back of socket.
 
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why can't you run 2 legs from the socket. joint in back box?like here?

[ElectriciansForums.net] how long can a spur cable be
 
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oldandtired said:
thought about extending ring but nearest point to break into it easily and fit conector block will be 6/7m . The 4m length would be fed from back of socket.
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You will need to be certain that the socket you intend spurring from is actually part of a RFC and not already a spur from the RFC, and your addition is NOT a spur from an existing Spur
 
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Pete999 said:
You will need to be certain that the socket you intend spurring from is actually part of a RFC and not already a spur from the RFC, and your addition is NOT a spur from an existing Spur
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the socket I am intending to spur from is part of the ring main. and is not a spur
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telectrix said:
if you're going to run 4m 2.5 cable, why not run 2 cables and extend ring in existing socket using wagos or ideal in line splice connectors. it's less than a fiver for extra materials
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thanks , will have another look at options
 
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oldandtired said:
the socket I am intending to spur from is part of the ring main. and is not a spur
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thanks , will have another look at options
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see picture in post #9. it's 1 I did last year. obviouslytrhe red/blacks are existing. the brown/blues are my rfc extension., clipped about 3m under floor in crawl space. ( this is what thin apprentices are for. :):):)).
 
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TonyMitchell said:
Don't say that, those none the wiser will take as licence to take a 2.5 T/E spur to their domesticated garden shed or barbeque position at the bottom of the garden!
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I should have said ‘within’ the domesticated dwelling
 
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