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DuaneMHunt1976
With shower say 10mm is dam hard to move, would 2x6mm or 6mm+2x2.5mm as being more manageable
Still the same cross sectional area
Still the same cross sectional area
Discuss Shower Cable in the UK Electrical Forum area at ElectriciansForums.net
it DOSE say 10mm CSA .. what 2x6mm would be 12mm CSA ..
Thats a Darft Comment Flanders...
as for the 4x6mm to replace a 10mm .. i think you might of read things wrong there
Point was that some guy on another forum had 6mm cable put in with 40A MCB that went in to the loft ..
Now with cable calcs that can drop to about 37A also the shower I think was 10K
He had a few electricians, in about it some say 6 and some say 10mm
As the 6mm was it might of been cheaper to put in a 4mm to make it up to 10mm CSA
The other thing was that lot of people didn't seem to understand that a 10mm CSA cable would be that same as 4x2.5mm CSA
What shocked me as I did think that kind of Maths was basic
Omg so this guy who has a shower installed by and electrician with 6mm cable 40A MCB going via loft.. Is OK with you guys
Sorry I must be in the wrong forum my error minus another 60
Forums ain't for me, I can't read them and tones just don't work for me...
Point was that some guy on another forum had 6mm cable put in with 40A MCB that went in to the loft ..
Now with cable calcs that can drop to about 37A also the shower I think was 10K
He had a few electricians, in about it some say 6 and some say 10mm
As the 6mm was it might of been cheaper to put in a 4mm to make it up to 10mm CSA
The other thing was that lot of people didn't seem to understand that a 10mm CSA cable would be that same as 4x2.5mm CSA
What shocked me as I did think that kind of Maths was basic
My thoughts as well.Jaysus.....DuaneMHunt. Are you really a sparkie..??
What about 10 x 1mm cables then? So that will be 20 in total? Using your simple infant school mathematics that would be fine.
Doesn't make it a good job though does it?
1mm has a ccc around 12/13A depending on conditions, let's say 10A for ease of maths.
So for a 40A supply you would only need 4off 1mm cables.
This is the way forward1mm has a ccc around 12/13A depending on conditions, let's say 10A for ease of maths.
So for a 40A supply you would only need 4off 1mm cables.
This is the way forward
Use a 2.5mm and limit the running time of the shower to 2 minutes 41 seconds using a timer.
Set the timer to re energise after 10 minutes to allow for thermal effects.
Check the calcs yourself if you dont believe me. :conehead:
I have just read this and my thoughts are, why are people even talking of using more than one cable, just use the "correct" size and do it properly, anything other than that is just stupid IMO.
I don't think anyone is being serious petal. Maybe the OP, but even then I think this thread was possibly a joke that didn't translate to the internet very well.
OK how long you been in that pub Dave, I'm jealous. :wink_smile:
agreed.most showers will run happily on a 2.5mm, strung over the bath and second duty as a knicker dryer.Totally agree with Dave on this one,when you are installing large supplies sometimes you have to install large cables in parallel because the cables can become unmanageable however the same does not apply when installing a shower cable.
All joking aside though, I think anything over 9.5kW on an instantaneous electric shower is getting a bit ridiculous and unnecessary too.
Totally agree with Dave on this one,when you are installing large supplies sometimes you have to install large cables in parallel because the cables can become unmanageable however the same does not apply when installing a shower cable.
BS7671 specifically permits paralleling cables, with certain provisos on cable route, type, etc. to ensure equal current sharing.I'd be interested to know if there's actually a reg that forbids it in the UK, I know there isn't in our domestic regs. As said already, it's common practice with cables in larger distribution networks but the logistics of ensuring identical lengths, routes and connecting a parallel cabled domestic final circuit would make it a bad idea.
I think id be more concerned about one of them being disconnected then overloading the remain one.
You will not need to worry in another few years because of the EU the power of vacuum cleaners are being restricted next they are going to restrict our power tools so soon your showers will be a maximum of 3KW and you will have a fine mist spray to that you reduce your need for so much water and then to round it off your bath towels will be the size of face cloths ! pmsl
As long as the two pull cords are tied together to ensure isolation of both at the same time.Cant see why the op doesn't go for 2 x 8Kw showers side by side with a 6mm T&E for each, LOL....
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