That is sounding rather more sensible and cheaper to operate. You may have ti use a time switch/contactor combination to control it.
You need to still apply for the load permission though
Cable for 12kw electric boiler
- Thread starter Mike2007
- Start date
That is sounding rather more sensible and cheaper to operate. You may have ti use a time switch/contactor combination to control it.
You need to still apply for the load permission though
How on earth could one achieve that - if it really is a 'simple' 12kW boiler, then it will inevitably take double that current, no matter what the time of day/night.
As everyone has asked, what exactly is this '12kW boiler', and is there any facility (e.g. multiple switched elements) to run it at less than 12kW ??
Kind Regards, John
so it sounds like it is intended to be the permanent heater in the house, no gas boiler, so we can expect it to be running at full power for extended periods, mostly daytime, unless there is a large thermal store and it goes on an overnight economy rate.
This is not a common domestic installation.
If you use that type of boiler overnight, your house will be hot at night only. There is no 'charging' as there is nothing to store the heat.
It's also doubtful that a 6kW boiler will be sufficient, unless the house is tiny and exceptionally well insulated with minimal requirements for hot water.
Is there really no option for oil or gas? Either would be substantially cheaper.
It's also doubtful that a 6kW boiler will be sufficient, unless the house is tiny and exceptionally well insulated with minimal requirements for hot water.
Is there really no option for oil or gas? Either would be substantially cheaper.
Or biomass, or air source or ground source heat pumps. Basically anything is cheaper than electricity for heating.
I reckon it's one of these;
http://www.heatandplumb.com/acatalog/Trianco_Aztec_Classic_Electric_Boiler_-_12kW.html
Manual (including electrical ratings, which do state 51A); http://www.gotogasdocs.co.uk/f/m/Trianco Oil Boilers/Electric Boiler/Aztec Classic UISM.pdf
Though it does ring a slight alarm bell.
If the OP is considering this it suggests that there is no gas in the area which could be a rural property.
That could raise a question over transformer capacity and what other load is in the area
It isn't all about the size of the individual service
If the OP is considering this it suggests that there is no gas in the area which could be a rural property.
That could raise a question over transformer capacity and what other load is in the area
It isn't all about the size of the individual service
Yes, I found that too. There is an error in the docs though. It states the "RCD" value for this device should be 63A.
I rather suspect that should be the MCB value.
SO a nice meaty 16mm² cable from a switch fuse will do it.
re
As i mentioned above. You really should get an E10 supply.
The structure of the 10 off peak hours is as follows;
3 hours in the afternoon
2 hours in the evening
5 hours over night
Read more: http://www.ukpower.co.uk/home_energy/economy_10#ixzz3Nsb1qqfs E7
The off peak meter arrangement does all the switching, you do not need a separate time switch.
But it will require more than 50AMPS every time it is running.
Ye cannae change the laws of physics, Jim.
I rather suspect that should be the MCB value.
SO a nice meaty 16mm² cable from a switch fuse will do it.
re
As i mentioned above. You really should get an E10 supply.
The structure of the 10 off peak hours is as follows;
3 hours in the afternoon
2 hours in the evening
5 hours over night
Read more: http://www.ukpower.co.uk/home_energy/economy_10#ixzz3Nsb1qqfs E7
The off peak meter arrangement does all the switching, you do not need a separate time switch.
But it will require more than 50AMPS every time it is running.
Ye cannae change the laws of physics, Jim.
I have that problem, which is why I have to rely on LPG. Expensive though LPG is, it's a lot cheaper than electric heating would be, even if there were enough supply capacity!
Like others, I'm far from convinced that this 'plan' has been very well thought through!
Kind Regards, John
Starting the think electric isn't very useful for my needs here?? The place is quite small but old (stone walls) and gas is out of the question (no room for tank). Also oil storage tank would be a site problem, so I turned to electric.
Maybe just a regular E7 storage heater setup would be better?
Fair enough. If there's not enough space for an LPG tank, have you considered using LPG cylinders? A small neighbouring cottage here has that set-up - with a small bank of large LPG cylinders by the side of the building (with, I think, automated switching between them), and they don't seem to have to be changed very often.
That's a far more conventional option - and at least it is designed to make use of cheap electricity at night and store the heat for release during the day. I don't really understand how the 'boiler' system is meant to work (other than by using very expensive daytime electricity), since there will presumably be a minimal heat store. As others have said, E10 id probably preferable to E7.
Kind Regards, John
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