low volt fan

[dean mac]

hi, my mate wants to change a 240 volt fan to a low volt fan as he didnt know it should be in zone 1 problem is the floor above has been tiled so wot he wants to is fit the lv tranny above ceiling without an isolation switch as he does want trunking.wot do u guys think

 

[Andy™]

Dont see a problem with putting the Tx above the ceiling.

 

[batty]

I would think you need some isolation switch of some sorts what about a pullcord the reason I say this what if the transformer where to catch on fire.

Batty

 

[dean mac]

he would have to damage the ceiling to put a pullcord in otherwise he would do

 

[Gforce]

My bathroom extractor fan is connected to transformer and is located at ceiling height about 2 meters from bath-but as its ceiling height and out of zone 2 would it not be 17th safe-as i assume when fitted 5 years ago would have been 16th. it is switched via the pullcord for the light and is surface mounted-couldnt this just be done.

 

[SPECIAL LOCATION]

I would agree with Batty that some sort of isolation is required.

Personally I never install any extractor fan (230v or 12v) without an isolator switch in the circuit.

Often people like to turn the fan off at night so it is not whirring away after a visit to the loo!

Also and more importantly so maintenance can be carried out safely.

So back to main point again; does this transformer have screw terminations?

in which case it MUST be accessible!

A 12v fan with run on timer often has the timer duration set at the same box as the transformer? which should also be accessible.

If someone has chosen to go ahead with decorating / renovations without taking into account any electrical requirement

IMHO, they either have to..

Run on the surface, (e.g. trunking)

or

Cut the decoration to conceal cables back into the fabric of the building.

I don't really see many more options without actually seeing the actual site itself?

 

[Apache]

Could we not, with care, mount a surface box with a tripple pole isolator on the ceiling? A 25mm box mounted over the door wouldn't be noticed and the damage caused getting the cable through ceiling would be covered by the box?

 

[green-hornet]

I think Apache should be an electrician!

Your wasted as a vet

There is always a simple answer to any kind of problem and as I have found on this forum when all heads are knocked together good results come out.

For safety reasons, if nothing else is concerned, you have to think of replacement and maintenance. This is best acheived if you can isolate the circuit you are working on leaving all other circuits live and in use.

This would imply that a permanant live supply to a single item of use be so constructed that the supply could be interupted without adverse distruption to the permanant supply to other services.

So fit an isolator switch, a fused spur or whatever and enjoy the benifits of working safely whilst isolated from the supply.

 

[Apache]

I think Apache should be an electrician!Your wasted as a vet

There is always a simple answer to any kind of problem and as I have found on this forum when all heads are knocked together good results come out.

For safety reasons, if nothing else is concerned, you have to think of replacement and maintenance. This is best acheived if you can isolate the circuit you are working on leaving all other circuits live and in use.

This would imply that a permanant live supply to a single item of use be so constructed that the supply could be interupted without adverse distruption to the permanant supply to other services.

So fit an isolator switch, a fused spur or whatever and enjoy the benifits of working safely whilst isolated from the supply.

Blushing