Cable for 12kw electric boiler

[flameport]

So how is it meant to be installed? Its designed for domestic use?

Whether designed for it or not, installing one on a typical domestic supply is likely to be impossible.

The storage heating situation is not comparable, as they only operate at defined times, typically at night when the load on the network is significantly lower.

Was intended to heat the property prior to being occupied.

Why would anyone want to heat an unoccupied property?
Even if this was required, what will be the heating source when the property is occupied later on?

 

[westie101]

The storage heating situation is not comparable, as they only operate at defined times, typically at night when the load on the network is significantly lower.

I suspect this is a wet system designed for off peak use possibly connected to an AGA. (partially based on a previous thread by the OP)

http://www.diynot.com/forums/electrics/time-switch-for-e7-range-cooker.376705/#2880106

I must have missed this but in reply to that, time switches are no longer fitted.
The switching is done either by a radio teleswitch or a meter including an integral radio switch.

If the two threads are connected perhaps the OP could tell us so and include pictures of the meter.
That way he can be helped, even if it needs ENWL to visit the property

 

[Taylortwocities]

Probbaly would use E10 tariff.

I have installed a couple of Sadia Electromax systems, but I thought that 9KW was the largest that they do.

OP, what make and model is this 12KW system please?

 

[JohnW2]

The storage heating situation is not comparable, as they only operate at defined times, typically at night when the load on the network is significantly lower.

I suspect this is a wet system designed for off peak use possibly connected to an AGA. (partially based on a previous thread by the OP) http://www.diynot.com/forums/electrics/time-switch-for-e7-range-cooker.376705/#2880106[/QUOTE]
The Aga linked to in that thread appears to call for only a 30A ("usually E7") supply - not exactly "12 kW". I must say that I didn't think that electric Agas had the facility to do any 'wet heating' (although Agas with other fuel types can have a limited 'wet heating' facility {1or 2 radiators}).

Kind Regards, John

 

[Nozzle]

..

 

[Nozzle]

The Aga linked to in that thread appears to call for only a 30A ("usually E7") supply - not exactly "12 kW". I must say that I didn't think that electric Agas had the facility to do any 'wet heating' (although Agas with other fuel types can have a limited 'wet heating' facility {1or 2 radiators}).

The AGA (Rayburn) that is installed in my house, (not by choice, it was already here when we moved in), provides heat to the whole house, hot water and does the cooking as well. There is a separate burner for the cooking side, and a modern-ish timer for the CH/HW. (It's natural gas powered)

Nozzle

 

[JohnW2]

The AGA (Rayburn) that is installed in my house, (not by choice, it was already here when we moved in), provides heat to the whole house, hot water and does the cooking as well. There is a separate burner for the cooking side, and a modern-ish timer for the CH/HW. (It's natural gas powered)

Although made by the same people, Agas and Rayburns are (at least, were - unless things have changed whilst I wasn't looking!) totally different kettles of fish (at least in non-electric versions). Rayburns can effectively be used as CH boilers and, as you say, can be used to run the CH of a whole house. However, at least in the past (and I think still now), with those branded as "Aga", the most one can do is have a small 'back boiler' which is designed to just run DHW and/or one or two radiators.

That all relates to gas, oil and solid fuel ones. As I said, I didn't think that the 'boiler' facility existed at all in electric models (perhaps for the reasons being discussed in this thread) - but I may be wrong. 'Basic' Agas, like the one I have, only do cooking (plus whatever heat radiates into the kitchen!)

Kind Regards, John

 

[Nozzle]

Ah, I never knew there was that quite substantial difference... thanks for the info.

Nozzle

 

[JohnW2]

Ah, I never knew there was that quite substantial difference... thanks for the info.

You're welcome. I think you'll find that the 'substantial difference' exists also in terms of price - ironically the more expensive brand being the one which can't do much CH! The prices of Agas were ridiculous enough when I bought mine about 30 years ago, but they are, IMO, now 'totally ridiculous'!

Kind Regards, John

 

[Nozzle]

I want to get rid of ours and replace it with a normal oven/hob and boiler... the missus does not agree! They're not worth a great deal second hand, that is for sure.

 

[JohnW2]

I want to get rid of ours and replace it with a normal oven/hob and boiler... the missus does not agree! They're not worth a great deal second hand, that is for sure.

That may possibly be true of your Rayburn, but it's still probably worth a fair bit. I think that one tends to see working secondhand 2-oven Agas in reasonable condition going for prices in the £2,000 - £4,000 range (4-oven ones up to around £6,000).

Kind Regards, John

 

[Taylortwocities]

Like many threads, we can chat and guess all that we like (and we do like to GUESS!!), but there is no point expending any more energy until the OP has responded to the several questions that have been asked of him.


I think I will refine the above and make it a standard text input for 80% of the topics on DIYNOT.COM...

 

[Mike2007]

100A, but the supplier may not allow that sort of load if it affects neighbouring properties.

What if the boiler was operational on E7 during the night at 26amps (much lower than storage heater circuit). So after this "charging" period of heating if a boost is required it will not exceed the 26amps from a 6kw boiler? Reducing the risk to the supply.
What kind of timed switch could be used for this load?
Let me know what you all think?

 

[flameport]

As suggested already by others several times, we need to know what this 'boiler' actually is, and what the intended purpose of it is, the type of property it is being installed in etc.

 

[Mike2007]

As suggested already by others several times, we need to know what this 'boiler' actually is, and what the intended purpose of it is, the type of property it is being installed in etc.

Domestic property 100amp supply
Aztec boiler
Space heating and hotwater

I don't view this site every day and I also go to bed, so sorry for my late reply