system

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  1. S

    Advice on TT system

    When carrying out Ze with main earth disconnect I get a reading of 77.25 ohms. All good. When main earth is reconnected and all parallel paths in place reading comes down to 0.60 ohms. I have 3 lighting circuits not covered by an rcd all Zs readings are well in permitted Zs. Would any body apply...
  2. I

    TT system, earth to neutral not tripping RCD

    TT system, Zs on socket circuit is 77.2 down a good bit after I added a second earth rod. When I short neutral to earth RCD doesn't trip. Can anyone help me out and explain please.
  3. A

    House earthing from an off grid solar system

    Hi everyone, I live well off grid in Wales and am presently renovating a small property. As part of that renovation I have had a full off grid solar system professionally fitted coupled with a generator back up. The inverter charger has a neutral earth link as does the generator. The inverter...
  4. C

    Hi. I could use some official advice . Is the Old Twin Mains fuse system considered unsafe and worthy of a C2 on a Condition report?

    Hi ! I could use some official advice please. Is the old Twin Mains Fuse system considered unsafe and worthy of a C2 on a Condition Report ? My feeling is that it's technically unsafe. I'm wondering if it could be classed as a C3 if the rest of the installation is ok, only because I'm under...
  5. T

    Can you use a 240V breaker on a 600V system?

    This is hypothetical, I am just curious. Please give this some thought. I have a 600V, 5HP motor (3728.5 Watts) and a 600V panel I want to supply it from. If I use a 20A, 600V breaker - the breaker will see ~6A on motor run. (P/V=I , 3728.5/600 = ~6A) If I use a 20A, 240V breaker - the...
  6. A

    Smart alarm system recommendations

    Hello, I would like to upgrade our existing, wired, burglar alarm system for smart alarm system. We don't use it as the cat keeps setting it off, although it works fine. Rather than just get pet PIRs I would like to upgrade the whole system. I don't want to go down the WIFI or hybrid route, so...
  7. Z

    Can anyone help.earthing system

    Hello all, can anyone clarify what this requires on a dno supply that needs to be upgraded. In regards to the earthing system, the application has a tick box which I'm slightly confused about on what it required, it's the part on steel framed building and why this is done
  8. D

    DIY solar system rigging and general electricals

    Hi, i am from punjab, india. We have 4.8 kilowatt solar system (16 panels of 300 watt each), it powers the underground water pump on our farm. Pump is DC submersible motor. Hence there is no inverter, only controller (which is not like regular solar controller, it is for pump only, shows...
  9. S

    How do I comply TT system

    Hi guys wondering what's the best way to do this got a board change on a TT system 3 bed terrace. So we need to offer an SPD however can't have one in a metal C.U without RCD protection on the Tails because of the single insulation feeding the SPD. So to do that that we need an s type RCD...
  10. N

    Adding AUX lights (with switch button) to existing Fuse Block/Relay system - do I need another relay for the AUX lights?

    Howdy folks. Complete electrical numpty back again with another basic question with a basic answer that I can't find an answer to elsewhere online. I am setting up an auxiliary fuse block/relay set up on my motorcycle. I have attached a photo of what my basic fuse block/relay system will be...
  11. L

    Home alarm system

    I am looking for a home alarm without being recommended by ads and marketing. I would like a wired bell box and key pad, but wireless sensors and door contacts. As i prefer not to run out cables all over my house. Any recommendations please?
  12. jmmrly

    Texecom 'A System Low Battery Alarm Occured'

    Hi, I've just got a texecom connect notification that 'A System Low Battery Alarm Occured'. I'm wanting to find out what this means? I'm a total Texecom newbie but i'm wanting to see if I can sort it out myself rather than calling the installer back for a charge. I've had it around 2 years now...
  13. Strima

    Fire Alarm Circuit RCD Protection TT System

    Doing a board swap on a HMO property with a TT system later this week and I've been asked to add OCPD for an L1 fire alarm system. As usual the landlord is being a little cagey with letting me know the other tradesmans details so I can confirm this but I'm on the understanding that a fire alarm...
  14. S

    UK PILC mains cable to PME system

    How do uk power networks install a PME system on old PILC mains cable. Do they use the old cable and put a junction on, where it terminates in the property. Or do they put new cable in from the street. Do anyone know how much they charge for this. I'm getting the usual unapproved earthing clamp...
  15. Zerax

    Earthing system quiz

    What sort of earthing system would you say this is ?
  16. G

    If one plasters over electric radiant ceiling, will the system still work?

    If one plasters over a radiant ceiling heat system, will the system still work?
  17. R

    110v vs 220v dual system

    Let me pick y brains with something that might have an easy solution but I just can't decide what to do Building an Motorhome out of a bus. Will use for a couple years in the US (110v), then move to Europe (220). I'll have mostly 12v equip, but still some 110/220 stuff like AC and what not...
  18. J

    Cable Marking System

    Hi, i am looking for a cable marking system i can use from 1.5mm to 16mm. Would be great if had L1, L and L3 complete without my having to make them up. This is the nearest i can find but the buggers don't do L1, L2 and l3 in the larger sizes :-(...
  19. K

    Generator feed to 2L+1N system

    I live in the Philippines but I have the same US electrical system (2 x 110V hot + 1 x neutral). I have two ground rods buried 8 ft. deep and connected to the main panel. Netural and ground are bonded in the main panel. And from the main panel, all 4 wires (2L + 1N + 1G) go to sub panels. Ground...
  20. ArkBigFoot

    DIY Security System Do I need Steping Power Supply

    I am making a security door system with reed type magnet switch. I have tried it on my desk and it works. I can set the time to stay on for several minutes. I was wanting one which would stay on even if they closed the door back quickly. This does that. My questions are: Do I need a stepping 12...

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