diversity on a cooker ring

[malcolmsanford]

no way , straight swap means no increase in current being used, from what you have described id say an increase in power, therefore rewire. and notify before work commences, or be a competent person, then you wont need to ask the question. fairly standard install.

fairly standard indeed as it was then as it is today

 

[Engineer54]

no way , straight swap means no increase in current being used, from what you have described id say an increase in power, therefore rewire. and notify before work commences, or be a competent person, then you wont need to ask the question. fairly standard install.

Are you actually being serious here?? So what would you suggest he rewire to, ...10mm, for a calculated load of 21A??

 

[randym68]

engineer54 I WAS REPLYING TO DADOFTWO probably didnt make it that clear, i did realise date too late so pointless , but most wiring isnt adequate, if its older than 20 years the insulation and sheathing are usually degrading and never acheive the 2 M ohms IR, i was saying it should be qualified person in a special location,

yes special locations are special locations, as i said i believe over kill, but imagine the Zs isnt adequate, hell of a kick waiting for your semi enclosed fuse to blow, wet hands from sink, no cpc.... bye bye owner,

not in this case, but imagine old house on a ring circuit which does the whole house, for some reason they did a spur off the ring , very quickly you get the cable warming and fires start this way...

engineer54 i know you have knowledge , we both know how to do cable cals, but not every DIY person or even so called electricians understand the risk, i know some don't even get the idea of PFC's or disconnection times. Ive also had a PAT tester cruising for work tell me that RCD doesn't operate fast enough, on existing circuit when i added 2 new circuits on rcbo's for extention

personally i like to sleep at night, and i couldn't do that letting someone out there spread the idea that any tom dick or harry can do electrical work.

and current is very important, volts jolts current kills....

 

[Engineer54]

Unless PVC insulated and sheathed cables have been continuously stressed, i can assure you they do not degrade after just 20 years. Were not talking about the older VIR/TRS cable types here, ....and even they lasted more than 20 years when not stressed. If the IR values are good, there is absolutely nothing Wrong with this cooker cable/circuit...

The OPs question regarded to whether or not a 6mm cable was suitable for the new cooker appliances load, which it surely is!!! There are always going to be DIY'ers, even the better ones that are going to make mistakes, same goes for electricians too, this is a fact of life...

There shouldn't be any need or requirement for using over-kill, as your means of being safe. You design and install an installation, no-matter where it be, special location or not, to the basic electrical principles of the current regulations. From what the OP has described to-date on his original thread, there is absolutely no requirement for this cable/circuit to be re-wired....

Anyway, seeing as the original thread was posted 3 years ago, ....It's a little too late to be offering advice now!! That trainee spark is probably now a working Electrician in his own right!! ...lol!!!

 

[pushrod]

but most wiring isnt adequate, if its older than 20 years the insulation and sheathing are usually degrading and never acheive the 2 M ohms IR, ....

Mmmh, not in my experience , have come across lots that is 40+ years old and is just fine.

 

[telectrix]

i'm well over 40 and i still IR at around 1k.

 

[Chr!s]

i'm well over 40 and i still IR at around 1k

Well if its starts getting lower best start getting into rubber lol

 

[Des 56]

What a wierd thread this was
It was resurected from the dead
The reply was possibly to the dead
There was a description of the MPs daughter, dead
Views on the life of installations that are Dead in the water
Just need somethiong about Dead testing to round it off

The ops argument was left for Dead by Engineers reasoned comprehensive reply

 

[telectrix]

ok des. lets all hold hands and try to contact the living