new shower cct-:new consumer ?

[heathelect]

just looked at a shower job on a house (new cct) , i replaced consumer unit 18 months ago. Question is do i fit a new 17th edition unit or use one of the spare ways in the old one, the old one is an 8way front end rcd consumer with 2 spare ways, all earthing and bonding was done at the time of the consumer change, your thoughts please. regards dave

 

[CUDABOY]

house ive been working in< not c u change...yet> shower on rewirable fuse!!! shower obveously newer than the board,id have insisted separate rcd or rcd board if i had fitted.keep old board? at time of regs the board you fitted was current.....cant see why you have to change.could you justify cost to customer or need? after all its less than 2 yrs old?

 

[heathelect]

house ive been working in< not c u change...yet> shower on rewirable fuse!!! shower obveously newer than the board,id have insisted separate rcd or rcd board if i had fitted.keep old board? at time of regs the board you fitted was current.....cant see why you have to change.could you justify cost to customer or need? after all its less than 2 yrs old?

thanks i agree i dont really want to fit new one, but if i connect new shower cct to old consumer it probably doesnt comply with 17th ?

 

[CUDABOY]

shhhh but im still fitting 16th boards,all for jobs i designed PRIOR to 17th coming into force..........

 

[mpfisher@hotmai]

You need to install the shower to the 17th ,which means rcd protected ,and forget the rest of the installation. As long as the main bonds are in place which you say they are. Job done!

Mark

 

[CUDABOY]

without diggin out me guide what are differences on 16th to 17th shower install? rcd obveousley......soz spellin...

 

[ElectricMick]

16th Ed needed RCD aswell so should be no different. I would fit a shower on 16th board,(or any other) and if there's no RCD use an RCBO. There's no difference in the boards, just the configuration of MCB's/RCD's. (As far as I can see!!!) If its an old fuse board I would just run it through a seperate RCD enclosure.

 

[CUDABOY]

so no change from 16th to 17th board just for new shower. on my 7th suzuki gs1000!

 

[ElectricMick]

Right, no change, it needs RCD under either regs. Been a Suzuki man myself for a few years - was running a '75 GT380 until recently, small but unpredictable fun, handled like a bag of s**t but kept me on my toes. The Bandit is the opposite - put it into a corner and you know you are coming out the other end. Have we hijacked another thread? Sorry!!!!!

 

[mpfisher@hotmai]

Think the original question was asking The main RCD covers all the board therefore in the event of a single fault the whole installation will trip which is not to BS7671 17th But we are talking about the regs for an additional circuit........... I feel like shakey here!!!!!!!


Mark

or i could copy and paste the entire 17th edition wiring regs and feel more like Carter


Mark

 

[ElectricMick]

If it was an RCD incomer I'd probably stick the shower on an RCBO - give you a fighting chance. As a matter of interest did a job recently where a fault on a lighting circuit was tripping both RCD's (lights and sockets) on 17th board. The circuits were seperated correctly so don't ask me how it was doing it - it was a duff light that the owner had fitted himself - so this seperation of circuits isn't necessarily the answer to all tripping problems. I wonder how much further we'll go to try and keep lights and sockets working whatever the fault?

 

[mpfisher@hotmai]

No discrimination Mick main RCD at 30 mA and the RCBO at the same


Mark

 

[heathelect]

thanks lads for replies gonna stick shower on old consumer regards all dave

 

[PAUL M]

could you not fit a seperate shower consumer unit ,a small two way?

 

[GAZHUDDS]

Would'nt a RCBO on the old consumer comply with the 17th out of interest