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system

  1. timhoward

    Halogen Lamp heating system, diversity?

    I'm in the middle of preparing a quote for installing 12 x 3Kw and 4 x 2Kw halogen heaters in a church. The system design was provided by a specialist company. This sort of thing: The system is specified to be split into five zones to be turned on depending on occupancy. Unless the church...
  2. HappyHippyDad

    What is a 'plug in' solar panel system?

    My best mate has been medically retired from the prison service at the young age of 52 and has time on his hands :D He's looking at a 'plug in' solar panel system. I've a read through it and with my limited experience of solar it looks like is is no different to a normal solar panel system...
  3. K

    ZE on tnc-s system

    Evening everyone . I was changing a fuse board today . Everything tested out fine and good . Until I measured the Ze which is on a tnc-s system . The result was 0.36 ohms now I know the max value for tncs is o.35 ohms . What would you guys do in this event call the dno or accept the result ...
  4. L

    What supporting equipment is needed to install a balcony photovoltaic system?

    Hi everyone, I am new to photovoltaic system installation, can you guys give me some advice. Currently I plan to purchase a Maysun Solar 800W balcony photovoltaic system. By understanding the accessories information, I found that there is currently a lack of special input sockets matching the...
  5. S

    Wet UFH/ Radiator system

    What’s the best setup for a system that has a heating system with existing radiators but a wet underfloor heating system is being added to a new extension. I will need a 3 channel programmer I assume? The plumber mentioned having it on all the time but just working on/off the independent stat in...
  6. Calebp43

    What earthing system have we got here?

    Went to a house to extend a circuit and upon doing the minor works I couldn't figure the earthing system. There was no DNO cutout and L and N came from overhead powerlines. I followed the main earth cable down and it went half a foot below the consumer unit to a connector block with 3 small...
  7. N

    TT System High Ze leading to possible Zs fails

    Doing a lot of EICRs at the moment and have came across what I'm sure is a common enough problem. In an off grid rural cottage I have a TT system, Diesel Generator that runs and charges batteries when they are below 10 percent or so. Ra is about 150 Ohms... was about 3 ohms for Ze before main...
  8. W

    Proposal for an inverter for a solar system on a balcony

    Hello everyone, I currently have two solar modules left over from an installation and I would like to use them to set up a solar system on the balcony. The system has an output of 800 W. Can you recommend a suitable inverter for me? Thanks for the help.
  9. B

    Is the earthing system TNCS or TT

    Carrying out a EICR in a commercial setting. In the main intake room the DNO supply comes in and it states clearly this is a PME system. 5 years ago it had a 120mm earth from the head going on to the MET which then had separate earths to each isolator on the panel. Within that time a new pumping...
  10. I

    TT System with TNS reading

    Shop with no earth coming from head, overhead lines in sight everywhere - definitely no earth from the DNO. Two 10mm earths going into the DB. One going to the water and another which disappears through a wall somewhere heading towards an external area never to be seen again. Customer doesn’t...
  11. G

    Multi door entry system

    I was working on a small door entry system today (4 flats ). It got me thinking , that say it was 16+ flats system , how would you go about dealing with the 16+ cables at the main entrance . Obviously a junction box system would probably be required , but was wondering how to over come that...
  12. Tom the Elder

    Installing groundwire system

    My 1951 CA home (none of original wiring grounded) has 7 receptacles* that have a separate ground wire extended into the subfloor and connected to the galvanized water pipes. Those pipes will soon be replaced with PEX. My plan is to drive ground rods with a new ground wire extending from the...
  13. B

    Regarding TT earth system

    Hi How do i access the earth rod to service it, where abouts will it be located and does a tt system have upfront rcds which will be probably in another enclosure? cheers B
  14. cliffed

    TT System with Upgraded DB/CU

    Big argument with a newly qualified electrician with all the necessary qualifications Had to give him a hand later on during the day, nice DB fitted &to be fair quite tidy too , with SPD…It’s a TT System with a good Ze 24.8 ohms. All Rcbo’s except for the Mcb supplying the SPD, which I pointed...
  15. S

    Heat Saver system what is it?

    Hi. I'm on my way to remove a faulty one of these. A 'heat saver' device fitted to a boiler. I haven't seen it yet but it seems to be a relay connected to a boiler thermostat. Has anyone seen these before? I'm guessing I can remove it all and just hard wire the system so it doesn't interfere...
  16. P

    2 pumps on one system

    Hi there, the heating system I am working on has 6 zones and valves for each zone which was working fine with one boiler and one pump. some rads weren't getting hot so the plumber has installed 2 x pumps, one for 3 zones and another for 3 zones, the problem is I originally had all the oranges...
  17. R

    Adding PylonTech batteries to a system with a PW2

    Good Evening All, I'm not an electrician but I'd like to pick the brains of those that are please. Note I intend getting a qualified electrician to do the installation work, this is not a DIY job. I have a SolarEdge based 10.7kW Solar PV system and a Tesla PW2 c/w Gateway and am export...
  18. T

    Van der valk rail system - good or not

    Has anyone used van der valk rail system - specifically pitched roof with their hooks & is it good? Thanks
  19. CCinPA`cr

    Visonic Powermax (Check system for troubles)

    Removed the associated phone-line. How do I permeably silence this message?
  20. J

    MCBs ADS in TT system

    Quick Question. Despite being 50 I am a newbie electrical installer. Preparing for my retirement from public service. Anyways - my Question. How the hell do MCBs work on a TT system. Say Ze is 33 Ohms with a 240 supply the PFC will be just over 7 Amps. How does that trip MCBs or is there were...
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