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systems

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  1. S

    CH/DHW Systems

    I've been wiring a few S/Y Plans recently and there's one thing I can't for the life in me figure out. What is (or was?) the CH OFF terminal used for on some programmers? I know the DHW OFF terminal is used in a Y Plan setup but haven't seen any other methods that require the CH OFF terminal.
  2. W

    Comparing my PV output with other nearby systems

    When I was researching PV through this site I am sure I found a link to a website where countrywide, or even internationally folk were uploading their generation data. Having spent a good hour googling and searching within the forum I have drawn a blank. Can someone help please. Thanks.
  3. Worcester

    Re-commissioning an "old" Solar Thermal system

    Looking for some advice here. Went to see an existing solar thermal system installed 10 or so years ago it has soldered connections - allowed at that time iirc. Anyway custard is having lots of work done including installing a new unvented dhw cylinder and has asked us if we could drain down...
  4. B

    Emergency Power Systems / UPS

    I am trying to find more information on emergency power systems in public buildings. Is there a definitive source of information out there that I am missing? A Guide, code of practice, regulations, etc.
  5. A

    Earthing systems with agricultural premises

    Hello all I've just been recently asked to do some remedial work in a farm for insurance. The supply is 3 phase and the existing earthing system is TNC S and I am going to convert this to a TT system which is in a cattle shed. From the main consumer unit I intend to resupply a consumer unit in...
  6. N

    The problems with installing HVAC systems in existing buidings.

    Hi gents. I have an exam question next week about the complications with installing HVAC systems in existing buildings. We've been asked to focus on things such as fire barriers, asbestos, room for plant and pedestrian access. Just wondering if anyone has ever had any experience with this and if...
  7. timo1

    Underfloor heating...

    Hi, Has anyone used this company before? underfloor heating mats Its for a bathroom approximately 5m square, is the 100watt man enough or should I recommend the 150 - 200 watt? Any alternative suggestions welcome, thankyou.
  8. Eco Chap

    Storing Battery Storage Systems safely

    Hi all, apologies if this has been covered before, had a search but didn't come up with anything. Score is were installing a Sunny Island unit next month on a pre existing pv system. I'm happy with the installation as far as the Sunny Island go's and confident SMA service can help out with any...
  9. SolarCity

    Daily Mail customers

    We went to look at an electrical job on Saturday and to cut a story short, the work they wanted doing simply wasn't feasible. Anyway, having noticed our van, the guy then proceeds to tell us that solar PV just doesn't work and that he is looking at solar thermal instead as it is much better...
  10. J

    French Heating Systems

    Hi guys, does anyone have a wiring diagram for french heating systems? I know they use a lot of electric heaters over there but I need a standard gas boiler/valve set up. Will it be the same as a British one? Thanks in advance!
  11. R

    TL inverters and TT earthing systems?

    HI Im after a bit of advise. Im a suby for british gas wiring heating systems. When a salesman goes to quote a job they have to do a "socket and see" test on a circuit to see if the main earth is sufficient. (not a great way to test it by hay-ho). Anyway this installation fails the test. so...
  12. yellowvanman

    Wireless PIRs?

    Hopefully someone may have come across something like this. Customer has a remote garage and wants a PIR on the garage and one on the house to jointly control a number of lights on both buildings. Getting a cable between the buildings would be a pain (not impossible), if there is a wireless...
  13. T

    testing voltage on 110v systems

    Hi guys, not really done any 110v work and not something we ever covered in detail in college. A workshop with fixed 110v outlets was having trouble with a 110v appliance, Upon voltage testing the outlet I got the following readings: L-N - 57v L-E - 0v N-E - 57v Are these readings what I...
  14. C

    MCS012 Accreditation for PV Mounting

    Is anyone else getting bother by the fact that in two weeks time (from 1st April) we need to be installing mounting systems that comply with MCS012 and yet there are only a handful of systems that are currently listed as being accredited on the MCS database? Is there a backlog of stuff waiting...
  15. T

    Solar PV Slates

    Has anyone had experience of PV slates / tiles? We have a customer who likes the idea:banghead:
  16. S

    How much do you guys in the South charge for wiring basic S and Y plan systems?

    As title suggests - labour only??
  17. C

    Advice on anything GSM related - Security, Door Entry, Monitoring or Control Systems

    Hi All, Very friendly offer of advice with anything GSM related. It's what we do. Cheers Noel 7 day Tech Suport
  18. jon jordan

    My first 3 phase solar pv systems need help

    Hi guys need a little guidance on a install I got to do this week we got a bungalow on a 3phase supply with 3phase cu The kit we have is as follows 3 x inverters 3.6 growatts 1x 3 phase meter i was thinking of taking a 3 phase supply to workshop Not far so thinking of 6mm swa on a 3p mcb...
  19. N

    Electrical wiring for heating and hot water systems domestic and basic commercial

    Is there any courses you would recommend regarding heating and hot water systems domestic and basic commercial. I need some practical experience and qualification thats ideally recognised. Just a 2-5 day course. I am from cheltenham so anything in the south west of the UK. Thanks any advice welcome
  20. S

    Designing photovoltaic systems

    Any advice on software for doing this. I have a trial of PV*SOL, but before I invest too much time and money I want to be reasonably sure its going to be the right one. I wounder how big the user base might be and also what training is available. How long do you think it might take to become...

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