Is it ok to run cable within a boxed vent pipe?

[magicstu]

I may get my head bitten off for this, but please be nice. I want to get the supply to my cooker replaced from 6mm to 10mm, but the existing route is almost impossible, but there is an easier route following the vent/stench pipe (that is boxed in ) through the bathroom and into the loft, then across to the front of the house and back down to the consumer unit. One company said they cant do it, as it passes through the bathroom, another has said it's ok because the cable is not part of the bathroom, and the boxed corner is completely built into the wall, I want to run the cable myself and get the electrician to do the final burying of the cable in the kitchen wall for the last 1.5 metres, and the final installation at the consumer unit with a new breaker, neither have an issue with that, its just the cable running down the boxed in pipework- Can anyone tell me if there are any regulations that it breaches? Thanks

 

[Silly Sausage]

I want a job as a 'Final Connection Electrician', it sounds like the DB's!

 

[magicstu]

OK, to throw more lights on the subject, we are looking at replacing our existing standard cooker with a range type cooker, as our family is 2 adults and 4 teenagers, something like a BELLING Classic 100 Electric Range Cooker , and was informed by a friend (not an electrician) who done the same to check the supply, as he had trouble with his until they upgraded the cable. I know a little bit about electrics, as have done a C&G mechanical to electrical engineer multi-skill course, enough to know I am not qualified to mess about in the consumer unit, or make decisions about cable routes, but am more than capable or routing the cable through my house. As for finding an electrician I can trust, this is the first time I have needed to use one, and when 2 give opposite answers, I like to give my work to the one that is right, and hopefully then I can trust them, and I thought it was a bit strange about the cable not being allowed to run through the bathroom ( being as the ceiling lights for the kitchen underneath must be in a similar environment?). At the moment it's connected to 6mm cable with a 32 amp breaker, and was told it should be OK, but may have issues if everything is running??

 

[Silly Sausage]

Re getting an Electrician, one of the regulars off here, near MK, is your best bet.
Because when he lets us know what he's done, the slightest mistake, he'll get torn to pieces!

 

[Guitarist]

I would never fix cable to stench-pipes. Get a tie base in the wall and cable-tie it up.

 

[LED Lighting]

Just checked that cooker and max it will draw is 5kw. That's 20A at 230v and 25A at 254v.

6mm cable is fine mate!
your friend prob had 2.5mm cable in which is not suitable. Most older houses had the cooker connected to a socket ring.

yours is fine mate.

just make sure you have RCD protection and earth bonding!

 

[magicstu]

What's the load of this new cooker

If I go with the belling, then it does state in the instruction book (just downloaded a copy to see ) 45 Amp breaker,10mm cable to the control unit, and 6mm from the control unit to the appliance

 

[LED Lighting]

Sorry didn't see that. Just looked at data sheet on beling site which states 5kW.
in that case back to 10mm

 

[Geordie Spark]

Geordie, i have noticed as time marches on, things that dangle unsupported tend to sag.

Tell me about it!!

 

[Geordie Spark]

My question same as last 2, why are you changing to 10mm unless your cooker is over 8.5kW?
i have never had a cooker require a 10mm cable (except a commercial/industrial cooker!)

Neither had I until a few weeks ago when I fitted a gas pipe and radial at my mate's house for the gas hob and electric oven he was getting, then this bloody big all electric range cooker thing arrived - rated at 11kW ............ :32:

 

[Geordie Spark]

Which is where duct tape becomes useful. :rofl:

It's also useful for keeping trappy lasses quiet.

 

[telectrix]

as i've already said. 6.0mm on a 32A MCB will handle any domestic cooker. anybody heard of diversity?

 

[Spoon]

anybody heard of diversity?

They are a dance group

 

[telectrix]

there's always one..... :nopity:

 

[D Skelton]

Applying diversity to the 13.5kW max load we're talking either 22A or 27A if the cooker switch has a socket on it. Funnily enough I personally wired in a Belling 100 for a mate a few weeks ago on his existing 6mm and 32A breaker. He's had no problems at all.

Whoever wants to run 10mm is tring to pull a fast one! Either that or they are just another incompetent Electrical Trainee with no idea whatsoever about even the simplest aspects of circuit design.

 

[davethsparky]

as i've already said. 6.0mm on a 32A MCB will handle any domestic cooker. anybody heard of diversity?

Interesting, I've done two domestic kitchens with wolf ranges rated at 50A before any diversity is applied. Wired in 10mm on a 45A breaker the first time and low and behold it took it out when it was running on full chat!
It did indeed run draw the full 50A when it's self cleaning cycle started up.

I can only imagine how happy the client would be if I'd followed a blanket 'domestic cooker is always 6mm' rule!