Electricians - Am I being over Quoted?

dodsi · Dirty Carny Joined: 06 Aug 2004 Karma :

Quick one, I am having a replacement Hob and Oven installed...

I am in no way an expert and certainly not in a position to undertake this work myself. And not withstanding any warranty I would want to keep valid with these (expensive) appliances.

The existing set up is a Single breaker into a switch and down to a junction which powers both the Hob and Oven (both electric).

(I didn't know this until last night when the guy came to have a look and quote which of course time = money)

New set up will be an induction hob (hard wired) and hard wired oven both which need to be on separate breakers due to the ampage (I think). So this will require a new circuit putting in for the oven - which the breaker box (fuse box? apologies for the terminology) is just next to where the oven is so any cable does not have to travel more than 3ft and as the fuse box is full to re-wire 2 different sockets onto the same breaker (these replaced electric heater points after we took out the electric heating) and convert the existing oven connection for just the Hob.

On top of this, the hole in the counter is not large enough (by about 1cm) for the new hob so we need a chippie to come and cut the hole to size.

Quote - £200 for all works... I didn't think this was totally unreasonable but having attempted to google and not get a straight answer does this sound ok?

I know AO who provided the appliances have a fitting service which may work out slightly cheaper but I wouldn't exactly trust their skill and most complaints on review sites come back to their fitting services not wanting to do certain things.

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

Thats sounds fair to me TBH.

Can you not cut a bigger hole yourself? It sounds like a 5 minute job with a jigsaw to me.

I recently wired in a new oven with the help of a mate, I used a single breaker with a 40a RCBO. That was spec'd to provide enough for the new oven and a future induction hob. However it depends on the rating of the appliances.

My oven was 4.7kw

4700/230(v) = ~20amps.

This means I can have a hob fitted that is up to ~5.5kw

5500/230 = ~24amps

You are allowed a fuse 90% of the total max rating because 'Diversity' which basically means it's unlucky everything will be outputting max power at once.

You may be able to do it on the same breaker but that depends on if the wiring is up to it and if the appliances are low enough.

You also should have an isolator switch for each appliance.
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bugeye_bob · World Chat Champion Joined: 05 Sep 2013 Karma :

amperage of oven and hob may help, a lot of ovens are just a 13A plug top, which wouldnt require all the electrical work for a new circuit etc.

dodsi · Dirty Carny Joined: 06 Aug 2004 Karma :

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

janner_10 · World Chat Champion Joined: 26 Sep 2011 Karma :

I haven't house bashed for many years, but £200 is a reasonable price, for in essence, is a days work perhaps.

Make sure you get the relevant certificates from the guy doing it. A new circuit is an addition, to change a circuit requires an alteration.

Also from memory, you can apply diversity to a hob, as in its unlikely you will have all 4 rings on, but you don't for an oven as it is either on or off (same as electrical showers)

The electrician must also be Part P registered as the work will be notifiable, however he should do all of that for you.

Unless you have just moved in, then offer cash to someone decent (or do yourself with guidance). "It was like that when I moved in"

OT: Years ago when I was on the tools, I could finish work having worked on 400v, 3ph systems at many hundreds of amps but not install an extra socket in my kitchen because I hadn't paid to be registered.
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dodsi · Dirty Carny Joined: 06 Aug 2004 Karma :

Thanks Janner, good to get some opinions to understand what things should cost etc.

In terms of the scopes of work I am happy with what is suggested because we spent extra (read hundreds extra) in order to have 4 x zones that can be used on a boost setting simoultaniously - had we not wanted to do this we could have spent a lot less on the hob.