New Cooker Cable

[shnabz]

What kind of cable do I need to wire a new 7.9kW cooker?

 

[Leesparkykent]

What kind of cable do I need to wire a new 7.9kW cooker?

A small one.

 

[shnabz]

1.5mm?

 

[Leesparkykent]

1.5mm?

No....

 

[shnabz]

Why? Table 4D2A says 1.5mm can carry 22A

 

[Leesparkykent]

I'm on tapatalk and didn't realise you are a trainee. Have you looked in the manufacturers instructions?

 

[shnabz]

Yes, it doesn't say which size cable to use...

The cooker can draw 34A at full load, but with diversity applied, it will drop to 22A (including the socket outlet)

 

[Leesparkykent]

Yes, it doesn't say which size cable to use...

The cooker can draw 34A at full load, but with diversity applied, it will drop to 22A (including the socket outlet)

What size ocpd are you going to use?

 

[shnabz]

Am I forgetting something? ...ambient temperature

 

[shnabz]

......

 

[shnabz]

What size ocpd are you going to use?

There's already a 32A type B MCB, and the circuit is 30mA RCD protected. I don't plan on altering the circuit.

 

[topquark]

Are you asking for cable for the supply circuit to the cooker outlet or from the cooker outlet to the cooker? If the latter the manufacturer will often specify it (and occasionally supply it).

 

[shnabz]

Sorry I wasn't very clear, from the outlet to the cooker. The new cooker didn't come with a cable.

 

[telectrix]

6mm T/E, unless you want to use butyl flex and ferrule the ends.

 

[Leesparkykent]

4mm butyl with eye crimps or ferrules.

 

[topquark]

If not specified in the manuf instructions, then something like 4.00mm 3183TQ should do. Most manuf specify one of the HORxx type cables though so have a read of the installation instructions.

 

[shnabz]

Why is it a smaller size with the butyl? Is it because they can reach a higher temperature without setting on fire?

 

[topquark]

The butyl has stranded cable not solid core so handles the heating from the current better. The butyl is also more suitable to the environment (grease/oil etc). Wouldn't use it on an oven install but usually do for a cooker.

 

[shnabz]

Also, is there a reason in particular that the ends need a ferrule?

 

[davesparks]

As a rule of thumb use the same size conductor as the supply circuit. So for most domestic cookers a bit of 6.0mm T&E is the norm

Every fine stranded cable requires ferrules at the terminations unless connected to a terminal specifically designed for fine stranded cables


Sent from my iPad using Tapatalk