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  1. 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
  3. C

    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...
  4. 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...
  5. 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...
  6. 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...
  7. 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
  8. CCinPA`cr

    Visonic Powermax (Check system for troubles)

    Removed the associated phone-line. How do I permeably silence this message?
  9. 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...
  10. newfutile

    Type of earthing system

    This states a SNE system, do I list this as a TN-S system. The heads look the same as the PME types. Our NICEIC area engineer was also not sure about this!
  11. S

    Suspected Broken PEN conductor on TNC-S system

    Hello everyone, I’m based in the ROI and live in a rural location. Yesterday evening my electricity supply started to switch on and off randomly. After waiting for the evening for it to come back on it still has not. I checked my neighbors who are on the same DSO as my house and they all have...
  12. T

    Grid Tied generator system

    Re:Grid tied System. Could someone advise please on the following. I wish to install a 3 phase (input) Grid Tied system to my home (2 - 5kw). My problem being that I'm told that a certified (SEG) Company needs to do the installation, although I know I'm capable of carrying out this job. Plus...
  13. HappyHippyDad

    Adding an earth rod IN ADDITION to a TN system

    I have just watched one of John Ward's interesting videos - It all makes sense apart from one of the final points involving adding an earth rod to an existing TN system. Not making a TT, but using the rod in addition to the TN system. This part is at 20 minutes and 8 seconds if you want to...
  14. N

    Older home with no grounding system and pool pump

    Installing a small above ground pool with a 1/2HP 120v pool pump. The house is older and has no grounding system that I can tell. Outlets are two prong. I know I need a gfci outlet to plug pump into but will this be safe and work as intended with no grounding system and only a hot and neutral...
  15. M

    The names of the parts for PLC System

    SNMP or Modbus TCP/RTU Protocols to connect the PLC to external HMI LCD HMI LCD with graphical representation & ability of issue control commmands power supply for all system components with backup batteries built in web browser (http/https) Different users' levels SNMP protocol Email...
  16. A

    Unexpected/weird On/Off switch behavior in 12v DC System

    Here's the setup: 400ah battery bank on 12v has a positive line that connects to a 400a fuse, then to a Blue Sea On/Off Switch, then to the positive Bus Bar, then to the Fuse Box, then to the Loads. Loads come back on the negative to the Fuse Box, then the negative Bus, which goes to the...
  17. D

    Cables run in Wolf Easi joist system

    Hi Guys Im wiring a domestic dwelling that has the Wolf Easi joist fitted. The central web is great is running services, but how do you fix cables running with and at the normal to the joists? My first thought was mini trunking say 100 by 100, then we should to do grouping calcs. Why trunking...
  18. fourtytwo

    Does anybody recognise this mounting system please ? SOLVED

    Does anybody recognise this rail profile please ? Its from an existing system I wish to extend. EDIT SOLVED....I think it's PV-EZrack pro series here
  19. J

    AM2 NET Marking System?

    Yo I recently sat my am2 this week and I am awaiting my results this week, just wondering how stringent NET are with the marking side of things, is each segment passed on a percentage (say 80%) or is a 100% required throughout. Thanks in advance ⚡️
  20. Chas70473

    Smart start system installation

    Hi I'm trying to install smart start system in my mazda6 2009 gh tamura. But can't understand wiring diagrams. Trying to find negative door lock,unlock door trigger and ground wire on bcm. Any help would be appreciated.
  21. G

    TT Eathing system to be installed

    Will a TT earthing system be complicated to fit to a block of 6 flats and 1 communal area And is it expensive UKPN have told me this is there preferred option rather than a new supply from the road which would be very expensive

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