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  1. E

    Fuse rating confusion

    Described as a dual-element fuse .https://www.ebay.com/itm/274472990684
  2. E

    joining two feeds into one consumer unit.

    Single Phase small Bang, dual phase bigger bang- 3phase you may be looking at an early cremation.
  3. E

    joining two feeds into one consumer unit.

    I would ask your electrician now as he will be carrying out the work. You can spend a lot of time trying to make it work so why not just make a good job as the DNO will not connect if not happy with the install.
  4. E

    Type A rcd in series or change at the board

    Why not speak to the manufacturer, then you will be installing it to their specifications. Ask about any other requirements for a TNCS supply .
  5. E

    Type A rcd in series or change at the board

    So the EV charger does not have Rcd protection built in which surprises me. Rcd”s need to be A type now.In this case a Rcd that disconnects all live conductors.
  6. E

    Type A rcd in series or change at the board

    How about an EV Charger that already has a type A Rcd built-in. MCB off none rcd side to give you discrimination . Also you will need an EV Tester. What type of earthing arrangement does the property have ? Have you calculated Max Demand ?
  7. E

    Damaged 240 AC to 24V power block

    Just for the crack, do you mean ''Should ''as a Verbal form used in BS 7671 ?
  8. E

    twin and earth between block wall and dot dab - cable channels needed?

    I think as you said the cables could have been installed through the joists when exposed, either way, if you or someone at a later date need to access the cables for any reason it won't be possible. Obviously, if there is a removable floor above the ceiling then that would be great. You may be...
  9. E

    Ansell auto test emergency exit signs problem Model AENLED/3M/W/ST

    Should a fault occur then the following can be observed:  If there is a failure of the battery such that it becomes disconnected then there will be a continuous red LED.  If the system fails the 10minute / 3 hour duration test then the red LED will flash slowly  If the lamp / LED’s fail the...
  10. E

    Remedial work after EICR

    Would you need AFDD protected circuits as recommended for Certain areas of particular public risk.
  11. E

    Solutions to light switch dilemma

    How about leaving the switch, fit a smart bulb, switch it on & control from an app on your phone, most people are glued to their phone, or ask Alexa.
  12. E

    Recent EICR unsatisfactory w/ C2 and FI... advise needed!

    I have had more time to view the report and I would say the test results are incorrect or made up as most entries do not add up. Max Zs values & R1 +R2 entries & measured ZS values less the Ze especially.
  13. E

    12v power supply units for cameras

    Depends what cameras you are using, are you talking old coax Analoque or cat 5 digital. I think 100metres max would be okay. I have used cat 5 twisted pairs for power & video. You will need video baluns at each end to convert .
  14. E

    Recent EICR unsatisfactory w/ C2 and FI... advise needed!

    Is there only one single-phase service supply or is it 3 Phase? As I did spot 2 meters unless one is a secondary check meter. Initially, I would be concerned as there is a lot of Henley Block connections for C/Unit tails. I think you need to be a bit more specific as to the properties use , I...
  15. E

    Continuity test after Ring Circuit

    Without R1+R2 ohm values, how will you know whether your overcurrent device will function under fault conditions, or have you chosen the correct one.
  16. E

    log tables for actual disconnect time

  17. Adiabatic Equations.PNG

    Adiabatic Equations.PNG

    • Electro-tech
    • Media item
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    • Category: Electrical Videos
  18. E

    log tables for actual disconnect time

    Table 41.3 page 68 for Max earth loop impedances general RCBO's no specific manufacturers. Useful video.
  19. E

    log tables for actual disconnect time

    Do you have a copy of the 18th edition Regs book or onsite guides?
  20. E

    Non Qualified Workman

    If he is working with you then you will need to make sure regarding public liability cover as you will be named as the main contractor. Even if he has public liability any claim would be down to you. I am a one man band & if I require help, for around an extra £120 premium a year or so I am...

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