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protection

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  1. HappyHippyDad

    Does this require RCD protection?

    I have been asked to connect a 9kW kiln to the consumer unit. The consumer unit is in the garage and the kiln will also be in the garage. All the cable will be surface mounted, probably in conduit. It's a steeple series E consumer unit with spare ways on the non-RCD side and no spare ways on...
  2. Ian1981

    Overload protection to a central heating pump x2

    Is it a requirement to provide overload protection to a central heating pump rated at 2.77amps? I’m kinda under impression that an almost 3 amp pump jamming will get rather hot. I mentioned this to the heating installer who has requested we just installed 2 x isolators for the pumps through a...
  3. spud1

    Why does AFDD protection need to be per circuit?

    Hi again! Why does AFDD protection where provided need to be installed per circuit instead one AFDD covering several circuits, like for example RCDs in domestic split load CUs? Is there a technical reason or is it another manufacturers money making myth!? Thanks.
  4. J

    Protection Against Voltage Disturbances

    Quick Q. Am doing 18th edition at the mo. Reviewing chapter 44 (from p95). Calculated Risk levels for the the use of SPDs. When you have calculated the risk level (CRL), what do you compare it against to know whether the risk is accelerate or not? Worked examples are in the regs book with...
  5. J

    RCD protection in a warehouse

    Is there such thing as a three phase RCBO??! Needing to install a three phase circuit for a 8kw three phase heater- connection by a 20a comando I want to use the metal trunking I will be installing for various 13a sockets- so the circuit doesn't need the rcd protection- but i beleive the 20a...
  6. spud1

    RCD protection maths?

    Hi all, My colleague and I were having a discussion today about RCD protection, as you do, and the reasoning behind why it is stipulated that 30mA should be the rating of an RCD for additional protection. Now we all know the rules regarding the maximum trip times for the various tests, but I...
  7. A

    New Socket Protection Question

    I have to install 2 new sockets into a garage, but unfortunately the consumer unit has all spaces allocated. One of the circuits has a 40Amp circuit breaker that is feeding a CU out into a summerhouse. The maximum load in the summerhouse would be around 10Amps with the summerhouse heater...
  8. L

    Frost protection in attic/loft

    Hi, Last year we had a burst pipe in the loft - made a heck of a mess! I would like to try and get some frost protection up in the loft. Originally I was thinking of some trace heating cables but having been up there I can see there are a lot of pipes! They are all insulated with 20-30mm foam...
  9. D

    Lightning protection system

    HI All, Does anybody know something about requirements about lighting protection system?
  10. Andy-1960

    Surge Protection Devices

    Thought I’d do a bit of browsing on this subject and stumbled across this video from the grand old US of A by a guy who calls himself the ‘Surge Protector Guy’.. great I thought this could be informative... I watched and was left thinking ..Why?
  11. M

    Fire rated back box advice

    Hi all, I was wondering what some of you recommend with regards fire rated back boxes. this is an install in my own home and want the best option available (cost not been an issue) scenario : timber frame house semi detatched and currently no outlets on party wall (double boarded) I will be...
  12. Andy5678

    Adding RCD protection to existing circuits

    Here’s a commercial scenario for you to comment on over you nightly dram. So there is an existing consumer unit with older style MCBs or bs88 fuses. RCBOs cannot be added to existing and customer wont pay for a new consumer unit. My soloution is to add a garage unit onto the side. Remove...
  13. B

    Outside light RCD protection

    Hi all, Just a quick question. Would a new installation for an outside light require an RCD switch if there is no RCD protection at the CU? The cable will be clipped direct to inside of porch wall. Thanks Beeg
  14. HappyHippyDad

    Code for no 30mA protection on lights?

    I'm getting in a bit of a muddle as to whether this is a code C3 or no code. This is an EICR. The CU has a 100mA main switch. The lights have 100mA protection the rest of the install has 30mA protection. It is a TT. The Best practice guide clearly says no RCD protection in this scenario is a...
  15. J

    Advice on surge protection

    I've got a fair bit of computer equipment at home which I need to protect as best I can. I use surge-protected extensions and these have been needed a couple of times. At least I think they have, the warning lights have come on, presumably because they've diverted a surge once too often. Is it...
  16. S

    Does this bell transformer have overload protection?

    Hi Folks I bought one of these Door Bell Transformer | Stevenson Plumbing & Electrical Supplies - https://www.stevensonplumbing.co.uk/door-bell-transformer.html?gclid=EAIaIQobChMIwLOp8p7A3QIV7grTCh3TzQvbEAkYAiABEgIxmvD_BwE as it's SELV and supports illuminated pushes, but can't find any...
  17. Gazthesparky

    Peoples thoughts Rcd protection

    I can not make up my mind what to do for the best. I've now encountered this a few times so just want peoples thoughts on this situation I have a customer who wants single socket fronts swapping for double conversion sockets they don't want the mess to the decoration. I went out to quote for...
  18. D

    rcd protection on sockets

    hi guys if a bank of 20 sockets wired in surface trunking on a radial circuit,these sockets would be used for computers gameboys and music equipment,my question is would they need to be rcd protected ? i know normally they would not,it's just that my mate said if protecting computers they...
  19. C

    EICR tick sheet other methods of protection

    Hi all, iv recently passed my testing and inspection course and have landed a job doing EICRs iv noticed that people I work with are ticking all the boxes in the section for "other methods of protection" I dont believe they should be. Can anyone give me a break down of what each point means...
  20. N

    TT and RCD protection

    Just noticed that the requirement for RCD protection has been removed for TT installations.

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