Got a call from a mate earlyer...

[AlanWirral]

Well a few weeks back a mate of mine called to ask me to do a job for him. Basically fitting an extractor fan in a bathroom.

I was too busy so the 'Builder' doing the bathroom got a 'Spark' to come and do it for them. Now today i got a call to come and have a look at the job as they didn't think it was right

When i got there i was told there were two basicaly 'Young lads' doing the work and they had wrecked the ceiling and smashed an expensive lampshade on the landing

Walking up the stairs i see the cover off the pendent on the landing and a new 2 core 1.5mm T&E wired into the switched live so they then run it in the loft space (over the joists) and down the inside of the bathroom wall, drilled through to a surface mounted switched fused spur on the outside of the bathroom above the door.

Then from that into the loft space (over joists) down the wall to a ceramic air vent that had been smashed from a rectangle into a resembled 'round' hole. What was more shocking is the fan needs to be selv as it can be touched from the bath easily AND the loft hatch is in the bathroom with the existing fitting (pendent) right next to it!

Going to rewire and isolte accordingly with IP rated DL's and a ELV fan fed from above. How the hell does this stuff still go on

 

[Octopus]

lol no worries
, the fan would be class two for what its worth,but not extra low voltage, maybe i am confussed

"confussed"??????????????????

 

[morph]

"confussed"??????????????????

confused some more ;-)

 

[telectrix]

And SELV!

Extractor fans installed within zone 1 must be at least IPX4.
Extractor fans installed within zone 1 must be fitted with 12v SELV motors with the SELV transformers and isolators fitted outside of zone 0, 1 & 2

do you have trhe reg. no. for that?

 

[Octopus]

do you have trhe reg. no. for that?

No, too many glasses of red to think about that. What is is your opinion?

 

[morph]

And SELV!

Extractor fans installed within zone 1 must be at least IPX4.
Extractor fans installed within zone 1 must be fitted with 12v SELV motors with the SELV transformers and isolators fitted outside of zone 0, 1 & 2

where did you find that from .confused some more still ;-)

 

[morph]

selv is not required as far as i can see, i would save my money personaly

 

[Octopus]

selv is not required as far as i can see, i would save my money personaly

You're the one signing the certificate so its your decision, personally I wouldn't put a 240v fan in zone 1

 

[telectrix]

i reserve my opinion until i've checked. too late tonight . zebedee says time for bed BOOOOOOOINGGGGGGG

 

[morph]

Any offers ?

 

[Elidor]

OSG table 8.1 (page 70) lists under Zone 1 some equipment that can be mains voltage equipment with minimum IPX4 / IPX5 (Jets) “...mains voltage, fixed, permanently connected equipment allowed: whirlpool units, electric showers, shower pumps, ventilation equipment...”.

I’m guessing an extractor fan fits comfortably under the category “ventilation equipment” ?


OSG 7.2.5 states RCD’s are required for circuits containing a bath or shower.

 

[Animal]

can't see any reg. requiring selv for fixed ventilation equipment.

 

[Paul.M]

Elidor has got it spot on right. Reg 701.55 (v) in zone 1 "providing it is suitable for installation in zone 1 according to the manufacturers instructions".

 

[timo]

No RCD protection and touchable from the bath

If you alter an existing None RCD circuit to add to it dont you need to add RCD to comply and also check that both main bonding is upto date too to comply. If there is RCD i would be happy with fixed 240 but as others have said 12v isnt much more and normally locate the tranny next to the isolator position etc.

 

[morph]

like i said selve not needed

 

[Octopus]

like i said selve not needed

I think post #42 sums it up - take a look at the manufacturers website!