How Many Amps Can A 6Mm Cable Carry

[kayone]

I,m getting a 14.8kW range cooker and want to know if it will be OK to connect to an existing 6mm cable to a 30amp fuse.

[EDDIE51]

I was told you need 10mm cable for a cooker.

[EDDIE51]

Just checked, 6mm twin and earth is only good for 11KW so you do need the 10mm , 6mm would be a fire risk don't use it !

[GRUMPY]

You need 10m cable for cooker with 30amp fuse!

[The Builder]

This can get quite complicated, kayone.
Because it's rare for every ring/oven to be in use at the same time, then something called "Diversity" is applied to the design.

Your cooker COULD draw around 65Amps....... this would need a 16mm cable!
However, Diversity brings this down to around 27Amps.
THEORETICALLY ... ok to use a 6mm cable with a 32A MCB.

You wouldn't fit that though. A couple of extra rings on, and your breaker would be operating too often (eventually causing it to wear.)

I say theoretically, because we have no idea of how the cable is installed. It might be covered in insulation, or have no way to dissipate heat.

The figures work ok for 10mm cable, BUT only if the cable run doesn't necessitate the cable being de-rated.

That's as definite as anyone can be without inspection.

[The Builder]

/// The figures work ok for 10mm cable, BUT only if the cable run doesn't necessitate the cable being de-rated. ///

I ought to explain that better.

The figures work ok for all the standard de-rating factors (different clipping methods etc).

I was just trying to be careful by pointing out that you MAY have other factors to consider on top of this (unlikely though)
Length of cable run is one factor.

Also, you mention a 30A fuse. I guess you have an old re-wireable fusebox?
Either fit a special MCB (40A or 50A) made to fit into the place where a fuse would go, or fit a separate additional consumer unit for the cooker only... with its own tails into the meter.

[BRIGHT SPARK]

If its being fitted in a kitchen and the cable/protection is being changed then it should go through local building control....dont shoot the messenger!

[The Builder]

...His Brightness speaks wise words............ what he's saying, and I have to agree, is that you'd be best off having a Part P registered electrician in to fit the new cable and protection.

No worries then :o)

[annieigma]

Must just add, a bit late, that a friend bought a new cooker, full size single type, oven, grill and four rings, was going to get an electrician to fit it, but when it was unpacked She found that it was fitted with a lead and 13a plug. So plugged it in, and all o.k. I thought that was very strange.

[whiskeryron]

// Must just add, a bit late, that a friend bought a new cooker, full size single type, oven, grill and four rings, was going to get an electrician to fit it, but when it was unpacked She found that it was fitted with a lead and 13a plug. So plugged it in, and all o.k. I thought that was very strange. //

Sounds a bit dodgy to me,was it made in far east ?

WR.