16amp b type breaker for oven.

[julianacb]

Hello all, excuse my bad grammar spelling etc. today i had the people from building control around to sign of my cu change
at my house,here is my question. My mum had her oven changed a little while ago and it has a design current of around 10.5 amps, the old fuse protecting was a 40 amp wired in a 10mm t+e, i have since replaced this with a 16 amp breaker and put connecters at old cooker switch and a blank plate. I done this as section h of osg states you can do this and dont need a switch if the circuit breaker is to be used as one. The inspector told me this is not Good and my interpretation is wrong. And i need a local isolation switch. I want to know what others opinion was on this he also said the oven is not fixed equipment? If im wrong fine but how do i remedy the situation its a double box do i just put the old cooker switch back on. I did do a little search before posting but could not really find what i was looking for. Any advice greatly appreciated!

 

[GLENNSPARK]

sometimes...

depends on who it is...

 

[overskilled]

I always fit an isolator switch for any appliance in kitchens...mentioning things going faulty and catching fire tends to sway most of them to my way of thinking...
Though lost one job as the clients wife was doing the interior design on a rented property and "didn't want those ugly switches on show" and they "all have to be in the back of the cabinets hidden out of sight"...no chance...he saw the point, i think she threw a fit as I've heard nowt since sticking the quote in weeks ago....
Got a job on tomorrow...re-lay a cooker supply....as previous owners rejigged the kitchen, put in a gas cooker and their spark just extended the ring for the cooker igniter and turned the old cooker/oven supply into a socket with random spur....not what I was hoping to find...was hoping it was just the usual cooker outlet plate previously swapped for a single socket...
I really hate crawling under newish build house floors (no room to move as the builders backfill them with crap and ends up like being on an assault course)...and I have to lift laminate in a cupboard to cut a hatch (Though owner is ok with it getting wrecked if thats what it takes to get access to the floor below..says he'll get a carpet if needs be for the cupboard so one saving grace)...'kin hell....this is going to be a LONG day tomorrow....still work is work...

 

[HappyHippyDad]

The switch is not required for isolation.
It depends whether you think emergency switching is required for an oven.


OK for TN, then. MCB, that is. Section 537 & Table 53.4.

Sorry, just checked my definitions. I thought of 'live' conductors as including neutral, but realise 'line' does not include neutral!

Yep.

Why do people keep quoting the OSG instead of the actual regulations?

I guess its because BS7671 is pretty scary and reads like a law book! I should have said 537.2.1.1, but seeing as though that says it doesn't need to be DP, we'll just say 'It's good practice so just do it'

 

[GLENNSPARK]

its really poor form not to be fitting localised isolation....

 

[Geoffsd]

.
I agree but in answer to the OP -

The inspector told me this is not Good and my interpretation is wrong.

It is not good but you're interpretation is not wrong.

he also said the oven is not fixed equipment?

Is it screwed to the base units?

 

[Geoffsd]

are regs, good practice and common sense 3 different things?

Regs are what we must follow,

good practice is what people think should be done, right or wrong and

common sense is almost non-existent.

 

[julianacb]

Yes its screwed

 

[Engineer54]

Commonsense would tell any competent electrician to provide a means of local isolation to fixed equipment. It certainly wouldn't tell him to remove any perfectly sound existing means of isolation....

 

[Badged01]

Regs are what we must follow,

good practice is what people think should be done, right or wrong

common sense is almost non-existent.

And not forgetting the fourth option ....... forum guidance which can be a mixture of all of the above!

 

[ChrisElectrical88]

We dont have to follow regs, its a non-statuary book.

 

[Engineer54]

If you're not competent to do otherwise, you'd be a fool not to follow BS7671. What i mean by ''Competent'', is being able to stand up in a court of law and successfully argue your departures are technically sound and safety has not been compromised etc...!!

 

[Octopus]

We dont have to follow regs, its a non-statuary book.

Which has to be the most unhelpful post of the year so far.

 

[ChrisElectrical88]

Well yes obviously you would be a fool not to follow the regs and like you say if you get dragged into court your goosed. And yes it wasn't really the most helpful of things, but it is a fact.

 

[Amp David]

Anyone connecting fixed equipment to a CU with RCD's and not having DP isolation is a fool IMHO.

Second this point

 

[telectrix]

Well yes obviously you would be a fool not to follow the regs and like you say if you get dragged into court your goosed. And yes it wasn't really the most helpful of things, but it is a fact.

well, if following regs. meanss drilling into a RFC in the wall, i'd be wary. LOL. :furious3: