Eicr

[westward10]

Cable size Rating in Amps
1mm 15
1.5mm 19.5
2.5mm 27
4mm 36
Rating of t/e cabling

Yes those ratings are for clipped direct or for a cable in masonry with no mechanical protection. If the cable is contained in oval conduit then the rating is greatly reduced. But I suspect you are not really interested in alternative opinions.

 

[Taylortwocities]

Pls reply cliffed to confirm the situation.

Then I am confused about these




@cliffed Clarification pleeeeeeze!

 

[westward10]

I can only assume the op is poorly worded and it is actually two circuits, but who knows.

 

[Wilko]

Hi - from afar it's hard to say definitively - but 4mm probably best protected by 20A mcb, unless the circuit can be visually confirmed as being clipped direct the whole way (as other folks have said )

 

[cliffed]

Pls reply cliffed to confirm the situation.

Sorry,2 cables installed,these are 4.0mm t/e,one for each cooker

 

[cliffed]

Hi - from afar it's hard to say definitively - but 4mm probably best protected by 20A mcb, unless the circuit can be visually confirmed as being clipped direct the whole way (as other folks have said )

Agree also on this, shouldn't think cookers would be over this when being used.

 

[cliffed]

Yes those ratings are for clipped direct or for a cable in masonry with no mechanical protection. If the cable is contained in oval conduit then the rating is greatly reduced. But I suspect you are not really interested in alternative opinions.

Thanks

 

[Midwest]

Call me an old traditionalist, but in general terms I would install a 6mm for a cooker circuit (i.e. 32a supply) & 10mm for a shower circuit (40a supply) in the absence of any known appliance. Otherwise, the home owner may have to rewire that circuit ever time they get a new cooker or shower, or when there's a change of ownership.

That said, my really expensive Hotpoint Range cooker , has 1.00mm flex (manufactures). So I could probably run that off the lighting circuit. I'd better go turn it on now, to warm it up for the roast dinner!

 

[westward10]

Quite right, don't know where this 30 years ago it was okay business comes from. I have never put in a 4.0 cooker supply.

 

[Andy78]

Quite right, don't know where this 30 years ago it was okay business comes from. I have never put in a 4.0 cooker supply.

I have, plenty of times. Obviously it's reference method dependant though.

 

[westward10]

I have, plenty of times. Obv
iously it's reference method dependant though.

Really well there you go, would never have thought it.

 

[Midwest]

I have, plenty of times. Obviously it's reference method dependant though.

Cheapskate

 

[Andy78]

Really well there you go, would never have thought it.

Where I can guarantee that the cable is fine for 32A, which is quite often in domestic rewires/refurbs, it's a no brainer really.
The situation the OP has where there is a separate oven and hob supply is also more common due to people wanting them in different locations on a kitchen fit. A 6mm to each is not really warranted in that case.

In the OP's situation I have to say that I would be tempted to drop the MCBs down to 20A or 25A though, dependant on measured current draw of the installed appliances and manufacturer's guidance.
No-one can rightly say that the 4mm installed is or isn't suitable for a 32A OCPD, although a reduction in MCB size could help with safety concerns. Certainly a lot easier than pulling in new 6mm cables for an uncertain safety issue.

 

[Andy78]

Cheapskate

Ha, it's more to do with ease of installation and connection.

 

[cliffed]

Call me an old traditionalist, but in general terms I would install a 6mm for a cooker circuit (i.e. 32a supply) & 10mm for a shower circuit (40a supply) in the absence of any known appliance. Otherwise, the home owner may have to rewire that circuit ever time they get a new cooker or shower, or when there's a change of ownership.

That said, my really expensive Hotpoint Range cooker , has 1.00mm flex (manufactures). So I could probably run that off the lighting circuit. I'd better go turn it on now, to warm it up for the roast dinner!

Good shout,but in the old days,this was fine,& I certainly wouldn't want to rewire it in 6.0 mm for the sake of it.

 

[cliffed]

Where I can guarantee that the cable is fine for 32A, which is quite often in domestic rewires/refurbs, it's a no brainer really.
The situation the OP has where there is a separate oven and hob supply is also more common due to people wanting them in different locations on a kitchen fit. A 6mm to each is not really warranted in that case.

In the OP's situation I have to say that I would be tempted to drop the MCBs down to 20A or 25A though, dependant on measured current draw of the installed appliances and manufacturer's guidance.
No-one can rightly say that the 4mm installed is or isn't suitable for a 32A OCPD, although a reduction in MCB size could help with safety concerns. Certainly a lot easier than pulling in new 6mm cables for an uncertain safety issue.

Cheers for your remarks,all taken on board.

 

[Midwest]

Good shout,but in the old days,this was fine,& I certainly wouldn't want to rewire it in 6.0 mm for the sake of it.

Why its only a couple of quid.

 

[westward10]

Good shout,but in the old days,this was fine,& I certainly wouldn't want to rewire it in 6.0 mm for the sake of it.

What do you deem as the "old days"

 

[cliffed]

What do you deem as the "old days"

1970's the good old days then,only cos we were younger I guess.

 

[cliffed]

Why its only a couple of quid.

Why its only a couple of quid.

But would it be only a couple of quid.
Reckon at least 4 hrs,up heavel of floors up,its in a kitchen,with cupboards,posh tiling,hoping you could pull down on sheathing.....