If I run a spur off an existing socket using a 13a FCU first off, can I daisy chain other sockets from the new socket. i.e existing socket-fcu-new socket-new socket-etc,
Spur
- Thread starter Grandad-Seaweed
- Start date
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Does this mean you can spur off a spur?!!
It means that if you have a fused spur, as he described, you can put seeral small loads it safe in the knowledge that the total load will never exceed 13Amp because that it waht you have fused it down to. The other items are run in a single line, not branching off into spurs. It's a radial.
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crafty1289 said:bpowell555 said:
Trying to catch me out eh? didn't work
hehe if I ever caught you out it would be a complete fluke!!!
Seriously though, let me get this right, you can't spur off a spur but you can run an FCU off a spur? This is brilliant! That's made my day
noooo! come back!bpowell555 said:Seriously though, let me get this right, you can't spur off a spur but you can run an FCU off a spur? This is brilliant! That's made my day
you can have a spur (chain of sockets on 2.5mm²) as long as you want, with as many sockets as you want, PROVIDING you start the chain of sockets with an FCU with a 13A fuse in it!
Think about it like those 10-way trailing sockets you can buy now, they start with a 13A plug, its just the same.
crafty1289 said:noooo! come back!bpowell555 said:Seriously though, let me get this right, you can't spur off a spur but you can run an FCU off a spur? This is brilliant! That's made my day
you can have a spur (chain of sockets on 2.5mm²) as long as you want, with as many sockets as you want, PROVIDING you start the chain of sockets with an FCU with a 13A fuse in it!
Think about it like those 10-way trailing sockets you can buy now, they start with a 13A plug, its just the same.
Ok I get you the FCU must be at the start of the spur. So if you have a spur you want to extend and are sure its not already a spur off a spur, then you should cut an FCU in before the spur after which you can extend ad infinitum - for low load items.
This is cool. It gives me some options for wiring I hadn't thought were available before
Cheers!
bpowell555 said:crafty1289 said:noooo! come back!bpowell555 said:Seriously though, let me get this right, you can't spur off a spur but you can run an FCU off a spur? This is brilliant! That's made my day
you can have a spur (chain of sockets on 2.5mm²) as long as you want, with as many sockets as you want, PROVIDING you start the chain of sockets with an FCU with a 13A fuse in it!
Think about it like those 10-way trailing sockets you can buy now, they start with a 13A plug, its just the same.
Ok I get you the FCU must be at the start of the spur. So if you have a spur you want to extend and are sure its not already a spur off a spur, then you should cut an FCU in before the spur after which you can extend ad infinitum - for low load items.
This is cool. It gives me some options for wiring I hadn't thought were available before
Cheers!
altho if you do go this way, be aware that you only have 13A to play with for all the sockets fed form the FCU. so no using the hoover and electric heater....
To further clarify, if you have a socket which is already on a spur and then you fit an FCU to "extend" the spur, the length of cable running between the socket and the FCU is technically an unfused spur itself (as the FCU comes AFTER it not before it.) Therefore this length of cable, however short, is "an unfused spur off an unfused spur" which is not allowed ?
Views ??
Hope that doesn't confuse !
Rich
Views ??
Hope that doesn't confuse !
Rich
bpowell555 said:This is cool. It gives me some options for wiring I hadn't thought were available before
Sounds as if you need to improve your knowledge before embarking on any more work.
Useful books, from which you can learn a great deal.
IMPORTANT NOTE - when buying books from Amazon, seek confirmation that they are the latest versions.
or http://www.iee.org/Publish/Books/WireAssoc/index.cfm?book=WR 261
or http://www.tlc-direct.co.uk/Main_Index/Electricians_Guide_Book/index.html
richardpy1 said:
The FCU goes before the first socket in the spur, so it is connected to the existing socket (on a ring or radial), not after the existing spur socket. If you want to turn an existing unfused spur into a fused spur, the fuse goes before the socket on that spur.
With regard to the cable up to the fuse, the current in this is still limited to the fuse current, unless of course you manage to stick a nail through it, but in that case the current is then picked up by the fuse on the existing circuit.
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