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  1. Wingnut1000

    Small off grid static 24V solar system earthing

    I have all the bits and am about to install a small off grid system. I will have qty 2 400W panels in series feeding a Victron 100/30 charge controller going into a 24V 100Ah LiFePo4 battery. I will then use a Buck converter to provide a 12V/10A output for 2 security camera systems and...
  2. R

    UK Earthing system

    I am a home owner, with no electrical qualifications, this is a question to see if my earthing is correct, Recently fitted and ev charger, the engineer who fitted told me my earth impedance reading is high and needs to checked by dno before starting to use. Dno came out and checked and told me I...
  3. Rockingit

    Linux based file server system

    Probably right up @Dan 's street.... I'm thinking of ridding myself of all the various cloud storage accounts that seem to be the disease of online life and instead convert a machine into a network file server to sit on my home network, accessible from the outside world. Thirty years ago I...
  4. D

    Battery How should I size battery system for a 75 kWh system powering a facility using 300 hWh a day. backup for short periods and peak hours but not prolong

    I have a basic model but not sure whats acually correct. I also want to have microinverters on each panel so any advice on that is appreciated.
  5. O

    Whole house ventilation / heat recovery system

    Ok, we are currently about to re-wire a fire damaged house and it has a fair bit of ducting running round the building, or did have. Downstairs has a duct in the kitchen, living room and downstairs toilet, two ducts then run upstairs (I think the kitchen and toilet are teed in together and the...
  6. M

    specify an appropriate wiring system for the luminaires in the main workshop, giving three reasons for your choice. thanks

    specify an appropriate wiring system for the luminaires in the main workshop, giving three reasons for your choice. thanks
  7. F

    Have a 2 plug socket in bedroom. Want to plug in 4 plugs from hifi stack system and one from electric heater via a 10 plug extension lead.

    Hi. Am new to this forum and i have an urgent question. Have a 2 plug socket in the bedroom and want to plug into one side of it an upright extension lead holding 4 plugs from a hifi stack system and one from an electric heater, making 5 plugs in the lead. Is this safe to do? Can one socket and...
  8. B

    Use vehicle generation system to charge leisure batteries, replace with B2B charger retaining the existing wiring, or replace everything?

    Hi all, I'm in the UK. I purchased a VW Crafter van and intend to convert it into a campervan. I'm currently stripping it of the original racking and equipment fitted by the previous company. One piece of equipment the previous company fitted was a generation system with a secondary...
    • bofhchaos
    • Thread
    • batteries charge charger everything existing generation leisure replace system vehicle wiring
    • Replies: 5
    • Forum: Auto Electrician Forum
  9. kt6345

    Advice re Grade A LD2 Fire Alarm System in Freehold Building

    HI, I'm a director of a freehold building which is 4 stories (one flat per storey), with a basement flat with its own separate entrance down some stairs outside the entrance to the main building. In our latest fire health and safety report we have been advised that our freehold building needs...
  10. Phillips007

    USA Designing an Electrical Power System for a rack

    Hi everyone, I’m in the process of designing an electrical power system for a rack(cabinet enclosure), and I would love some input from the community. The components I’m planning to use include: Circuit Breakers (Main CB: 35-40A, Other CBs: 2A) Surge Arrester Automatic Transfer Switch (ATS)...
  11. B

    TT system do I need to fit a main switch or time delayed RCD switch?

    Hi everyone I'm ready to do second fix on a rewire it's a tt system all my circuit will protected by individual rcbos Do I need main switch to be normal dp switch or time delay rcd please help.
    • baazab
    • Thread
    • delayed fit main main switch rcd switch system time time delay tt system
    • Replies: 7
    • Forum: UK Electrical Forum
  12. A

    Help with Drayton motorised valve heating system

    So I've recently moved into a house with gas central heating, before I have only had electric only flats so I'm a bit new to it. During the past cold few days I thought I'd test the central heating to see if there were any issues. The programmer is a siemens RWB29 and seems to work just fine, I...
  13. Admin

    Julie has so many likes she broke the badge system

    I just noticed @Julie. Didn't have Esteemed and was like she has DEFO got the criteria for it. But she not only had the criteria, she had so many likes per posts that she went over what I thought a maximum could ever be. SHE BROKE THE SCALES INTERNET MAN! So thanks @Julie. for what must be...
  14. J

    Lighting control system options

    Morning. I'm looking for some advice. I was a NICEIC QS about 8 years ago, but I left the industry and so I'm not across the new market products. Around 6 years ago I rewired my house and I prepared the wiring for a Rako system where is wired all switch lines back to a central hub next the...
  15. F

    TT System Existing is a multi9 13 way RCD main switch DB

    Hi Ive read a few discussions on the topic but what setup would you recommend for replacing a DB on a domestic TT system? I've moved house and need to get the meter changed ready for the car charger, I need to upgrade the severely dated DB at the same time. Existing is a multi9 13 way RCD...
    • fattony
    • Thread
    • existing main main switch rcd rcd main switch switch system tt system
    • Replies: 17
    • Forum: UK Electrical Forum
  16. 7029 dave

    DAY1 How old is this conduit system

    Took a few snaps of this conduit install in Poland, as you can see still functional my guess 1940.s
  17. G

    Modernising a Domestic Servants call system

    I have a house built around 1900 with a servants call system. The indicator/bell unit is similar to the one shown in the attachment and the push buttons are all in place. Internal wiring of the unit is complete and local tests prove it all works. Unfortunately, all the wiring from the push...
  18. N

    grade B ld1 conventional fire detection system

    Are fire alarm companies/engineers the only people who can certify Grade B LD1 conventional fire detection systems? It’s on a domestic house Or can any spark self certify them through their competent person scheme using the certificate templates provided? I’ve been asked to install a system...
  19. V

    surge protection for heating system

    last week, houses in the road had a power cut one evening, although we hadn't at that stage...then, in bed near midnight, we were dozing, then heard a loud pop in the hall....got up and smelt a very strong electrical burning smell (we were also then without power), it was coming from the...
  20. S

    Earthing roof beams and roofing sheets on an attached garage.

    My friend has a conundrum regarding earthing the metal parts of his garage. It's an extension to his home which is on a TT supply, It's of concrete block construction with a metal roof, attached to timbers but touching 3 RSJ's which supports the whole roof. None of which is bonded. There are...

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