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  1. #1

    Electrical supply

    Its got to be an armoured cable whether its underground or hanging from a fence or a wall, I got this bit right I think? But what about the source?

    I have a newly constructed conservatory that's not yet been wired, I intend eventually to rout electricity from the conservatory to the pump house and pond, so I need to get the conservatory wired up correctly in order to do this. I can easily extend the ground floor ring main out to the conservatory (currently there's only six 2 gang outlets on it) and I was thinking of adding another four in the conservatory, however I read online, that these days conservatories are usually radially supplied via a RCD protected fused switch plate, next I discover that individually protected socket outlets are required in conservatory's, now, and now I'm lost I can easily install individual RCD protected two gang sockets at additional expense but how do I then connect the armoured cable going out to the pond from this extended ring main circuit, or do I have to go right back to CU adding a new link? please help me, so I can wire my new conservatory (extension new build or what ever the f..in things called?) correctly so I can supply the fish pond.



  2. #2
    Extreme Koi Member Rank = Jussai RJW2012's Avatar
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    Electrical supply

    I don’t think your meant to extend the ring main anymore?

    My electrician ran new 3 core from a spare connection on one of the two RCB’s, out through the external wall, terminating here:



    (Ignore the earth, that’s from the gas meter).

    Then armoured cable onto the Filter House (under the decking, etc.) terminating at a fused socket.

    3 core cable from that fused socket into another fused socket, then onto 3 double plugs.

    As I say I’m no electrician so my first statement might be complete guff - get an electrician!

    Rob.



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    Last edited by RJW2012; 28-11-2017 at 11:57 PM.

  3. #3
    Moderator Rank = Supreme Champion Feline's Avatar
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    Definitely a job for a sparkie. With this kind of thing, if you need to ask then you shouldn't be doing it in my opinion. Better to be safe than sorry.

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  5. #4
    That's right RJW2012, not allowed to extend ring main to conservatory, cant even take it though a cavity wall now.

    sparkie is needed Feline your right.

    I rewired this house myself in 1983, it had rotting rubber insulated wire with a buried in plaster naked multistrand earth connected to the copper water feed pipe coming to the house at the stop cock, it had those horrible wire fuses that people used to wrap with aluminium fag packet papers if they had run out of fuse wire. I installed a modern CU with a single 100 mili amp earth leakage trip switch and miniature circuit breakers, its worked fine ever since but I'm now going to up date it, I'm getting a pro in and he's going to stick a new CU in with separate RCCB for cooker circuit and ring mains as well as one for the conservatory, and while he's here I'm going to pick his brains as to if I need and extra RCCB protected supply off the CU for the pond or if its possible to spur of the conservatory instead. I've been wanting to get these electrics done for years and now there's good enough reason. If anyone can prime me with the 'appropriate questions' to put to my sparkie in relation to powering up a pond I would love you to do it

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  7. #5
    You will need to take the feed for your pond directly from the consumer unit.

  8. #6
    Quote Originally Posted by Leepodsmith View Post
    You will need to take the feed for your pond directly from the consumer unit.
    Do not forget that you need Residual current circuit breaker 30mA on anything close to water (bathroom as well as your filter house) - fitted behind conssumer unit on the lead to your filter house - really job for electrician - nothing to save here - it is your life at stake ultimately....

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  10. #7
    Senior Member Rank = Grand Champion andikoi's Avatar
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    think the only question you need to ask your sparkie loadbragle is "how much will it cost to do this,and when can you do it "lol,andi

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  13. #9
    Junior Member Rank = Fry DG71's Avatar
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    Hi There, if I'm not to late you would be better running another individual circuit from you consumer unit with an individual 30mA RCD form the consumer unit to your shed.
    This should give you a separate isolation to your shed than using circuits in your house, this should then eliminate nuisance tripping in either your house or shed should faults occur on either.

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  15. #10
    Thanx DG71 for advice on running a separate 30mA RCD circuit from the CU to a pond, and I need every bit of advice I can get too .

    I'm totally in to 'electrics' now and this thing about wiring up a pond has made me realise I need a complete electrical makeover. While I'm at it (electrical makeover) I'm also thinking about future proofing for 'car battery charging ' this shits going to impact us all eventually, so when I get my sparky in I'm going to insist on provision for a separate car charging circuit installed in advance. Now who knows any good sparx in north Birmingham?

  16. #11
    Moderator Rank = Supreme Champion Feline's Avatar
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    I wouldn't bother fitting a charging point for an EV until you have one- there is currently a £500 grant towards the cost available to EV owners and primary users only. You would need to know what your intended new car in the future would need. Currently the choice is mainly 3kW, 7kW or 22kW, but I expect that will change in time.

  17. #12
    Hi all

    As previously stated, you are better installing a dedicated supply for the pond in 4/6 mm 3 core armoured cable. Installing a larger supply cable will give the option to add to the current install at a later date, the problem with spuring off the ring final circuit in the conservatory is you would only have a 13 amp supply to the pond if done correctly. I would ask your electrician to install you a amendment 3 five way consumer unit in the filter house allowing a separate mcb for lighting, sockets, heating etc. Cheers

    james

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  19. #13
    Ummm interesting info Feline, I still have my faithful manual Passat diesel bought new 2003 and it's been an incredible car too, eons better than the one I had before it, that one what was a MK1 Golf,also bought new 1982, it had paper thin rusting steel (more probably the problem was a primitive inefficient paint system), but Giugario's designs were sublime back then.

    Was currently thinking of a diesel Skoda 7 speed Superb, a massive car for 20 grand that could possibly outlive me from new, or even you lol.


    but nobody knows anything these days, what the hells coming next? its all NUTS.

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  21. #14
    Extreme Koi Member Rank = Nanasai Rog.G's Avatar
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    Quote Originally Posted by Loadbragle View Post
    Ummm interesting info Feline, I still have my faithful manual Passat diesel bought new 2003 and it's been an incredible car too, eons better than the one I had before it, that one what was a MK1 Golf,also bought new 1982, it had paper thin rusting steel (more probably the problem was a primitive inefficient paint system), but Giugario's designs were sublime back then.

    Was currently thinking of a diesel Skoda 7 speed Superb, a massive car for 20 grand that could possibly outlive me from new, or even you lol.


    but nobody knows anything these days, what the hells coming next? its all NUTS.
    I think you’re on the wrong forum������

  22. #15
    Yes Rog, sorry about that m8.

    I'm fitting a 'High Integrity Dual RCD CU' fitted with two independent RCBO's one each for a conservatory and the pond, I'm wondering what rating RCBO the ponds likely to need, I wont be heating the pond but there might be a small pump room with lighting and an outlet in case I need to use a power tool.

  23. #16
    Senior Member Rank = Hassai dc197's Avatar
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    Add up the wattage of all your devices and dive by 240 for your pond's amperage needs. The pond won't require much at all without a heater. A power tool is likely to be many, perhaps 10, times what the pond needs.
    Example, my pond uses 150w, drawing under 1 amp, but some power tools may draw 10 amps.

    So add your pond's need to your fattest power tool's need and that is the rating needed for your circuit breaker.

  24. #17
    I discover that an 'RCBO CU' is best way to go now, I can get a six-way populated unit with blanks for four more RCBO's for £114 and its same size as my old CU, see pic, so easy and quick to swap.DSCF3823.jpg

 

 

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