63 Amp Isolator

[Redvanman]

I'm running a 63A supply for a cooker and need to have a local isolator.
Apart from having a 63A main switch in a small enclosure, is there any thing else I could use which is discreet to put in the back of a cupboard.

Thanks

 

[D Skelton]

All depends on the circumstances. Good working practice is a completely subjective term. Would you install 'local' isolation to every three plated light fitting?

 

[Mike66]

Getting warm I think. Looking at Memorandum of Guidance on The Electricity at Work Regulation

Regulation 12 page 26

 

[D Skelton]

What about nuisance tripping???

What about it? If the cooker is tripping then there is a fault on the circuit that needs rectification the same as anything else. Until then, it can be switched off integrally or at the MCB.

 

[Mike66]

The OP is not talking about a light fitting.

Go on commit yourself would you install a cooker without an isolator

 

[Redvanman]

How about 537.2.1.2 or 537.3.1.2
Fingers crossed

 

[D Skelton]

I have, and would again. Find me a reg that says I shouldt be doing so!

 

[Octopus]

What about it? If the cooker is tripping then there is a fault on the circuit that needs rectification the same as anything else. Until then, it can be switched off integrally or at the MCB.

which doesn't necessarily prevent a N-E fault tripping the RCD.

 

[Redvanman]

Has everybody got the green book now moneys on the table

 

[D Skelton]

How about 537.2.1.2 or 537.3.1.2
Fingers crossed

537.2.1.2 can be met by the MCB. It could NOT be met by using a cooker control unit, so that one is irrelevant.

537.3.1.2 can be met by the use of a locking off device.

Try again.

 

[Mike66]

I know my NICEIC inspector would be telling me I shouldnt be doing it. He made a comment when I installed a cooker isolator switch in a cupboard as per customers request.

Do you ever have inspections?

 

[Kate]

I would always install an isolation switch to a cooker. I will mark as an observation/issue if a cooker had no isolation too

 

[D Skelton]

which doesn't necessarily prevent a N-E fault tripping the RCD.

You're quite right, it doesn't. But then a N-E fault could occur on any circuit at any point. Should we have local isolation at every point of utilisation, and then local isolation protecting each point of local isolation??

Best practice or personal opinions aside. A cooker does NOT 'need' local isolation. In fact, find the words 'local' and 'isolation' next to each other in the BGB and I'd be flabbergasted!

 

[Redvanman]

537.2.1.2 can be met by the MCB. It could NOT be met by using a cooker control unit, so that one is irrelevant.

537.3.1.2 can be met by the use of a locking off device.

Try again.

had a feeling you'd come back with that plus I just read on next page it saying a mcb can be used as a isolator.
god damn it i was taking everyone down the pub.

any way the thread has been hijacked some what, what about the isolator weather you use one or not cos i do

 

[Octopus]

You're quite right, it doesn't. But then a N-E fault could occur on any circuit at any point. Should we have local isolation at every point of utilisation, and then local isolation protecting each point of local isolation??

Best practice or personal opinions aside. A cooker does NOT 'need' local isolation. In fact, find the words 'local' and 'isolation' next to each other in the BGB and I'd be flabbergasted!

Good practice says to me that every fixed appliance that can not be DP isolated by pulling out a plug (and not having to move an appliance) should have a DP isolator.

If you must persist with your it doesn't need a isolator I would concede ONLY IF the cooker was on a dedicated RCBO

 

[Redvanman]

I know my NICEIC inspector would be telling me I shouldnt be doing it. He made a comment when I installed a cooker isolator switch in a cupboard as per customers request.

Do you ever have inspections?

What a knob you could put it anywhere who wants a chuffing great switch on show