rcd's | Page 3

rcd's

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  1. K

    2 RCD's on circuit

    Viewed a friends house where a 10mm cable from the consumer unit is feeding a Sub-consumer unit in the shed... The circuit itself is protected by a 32A MCB breaker under an 30mA RCD at the main consumer unit... The sub in the shed is a single RCD and with a single 32A MCB... Problem is that...
  2. P

    French wiring book showing Type AC 40a breaker with N and L wired opposite

    Hi all. I've just had my house in France upgraded to single phase. I've bought a consumer unit as i only want a basic set up (minimal electric is used in my house!) and am going to put it in myself. I have a book which teaches you how to wire up. The consumer unit comes pre-packed with one...
  3. G

    RCD's and large capacitive loads

    Hi all, just registered today and sorry to come straight in with a request for help. I wasn't sure if this would be best in the commercial forum or the domestic one as really it is using comercial type equipment on a domestic ring main. I have 2 large battery charger/inverters in use at my...
  4. H

    2 Rcd's?

    I'm thinking of having a new fuseboard fitted. The existing one has 8 fuse in it and is boxed in. The 2 electricians who have come to quotesay i need a board with A main switch 2 Rcds and 8 circuit breakers. the board will not fit in the boxing. My friend has a board with 1Rcd and eight circuit...
  5. Doomed

    RCD's and portable arc welders

    Replacing ring main in metal working workshop. They frequently have 2 portable arc welders on the go. The sockets are all now supposed to have RCD protection, but will the arc welders trip them out? Asking as had a problem potentially like this in a professional photography studio where several...
  6. D

    All three RCD's tripped

    Good evening every body. Im new here so hello to one and all I have a question. I plugged my new 1710 Megger into a TSO in a garage with a two way board on a 30ma RCD. I did an RCD check and my X1 took the RCD out in the garage and the board in the workshop and the main house one too.. I...
  7. H

    EICR- Are Rcd's necessary ?

    Hi all, I have been asked to carry out repair works in a house which has had a condition report completed by another electrician. One of the main problems they have outline is that the "entire property is not protected by RCD's - C2" The D.B is an old wylex board with rewirable fuse's so...
  8. C

    RCD's in office

    Hi. I have been asked to change a DB in an office that is going to be used as a call centre. The original wiring (which isn't being altered) is T+E in partition walls. With amendment 3 coming in and the removal of "under the supervision of skilled and instructed persons", would I be right in...
  9. V

    Rcd's that fail to operate in less than 40 m/s

    Hi All Ok...after many years of testing rcd trip times...having some failed or faulty rcd's....we are starting to come across perfectly good rcds / rcbo's . .from various makes....that wont trip at all..or wont trip in under 40 m/s. about a year ago...in a domestic property..we fitted a new...
  10. R

    Loop tests and RCD's

    Had an old Fluke for years, which has incidentally been faultless . Company purchased a Megger last year however when doing Internal earth fault loop impedance readings are far higher than expected. I.e..example Ze = 0.20ohms r1 + r2 = 0.15ohms Zs should be about 0.35ohms however coming...
  11. driverman

    2 x RCD's tripping

    Hi guys, tried searching,whereby explanations have been given as to why a RCD will trip by a fault on a circuit that ISN'T electrically protected by the RCD tripping. Typically crossed neutrals or borrowed neutrals. I'm not into testing. Company I work for been called out to an EV bollard with 2...
  12. M

    Rcd query.........??

    Hi Guys, does anybody know what the fundemental difference is between a type 1 rcd in relation to a normal domestic type to bs 61008. These have been mentioned for supplies to electric vehicle chargers....? Many thanks in advance ))
  13. C

    Settle when rcd's are required on sockets please

    Settle when rcd's / rcbos are required on sockets please I believe the way the regs are now written that they are required on all circuits unless they are risked out even in an industrial situation. I am told this is not the case in an industrial situation as they are completely installed in...
  14. Leesparkykent

    self made solution for testing for earth leakage on RCD's

    Can't work out if this is utter sh** or pretty good if you didn't possess a earth leakage clamp meter. Diagnosing RCD earth leakage breaker nuisance trips | eBay
  15. dlt27

    High zs on RCD's.

    Hi all. I carried out an EICR yesterday. It was a BG split load consumer unit and when testing I noticed the zs values were coming out high. I noticed on the 1 rcd there was 0.50 Ohms difference between feed and load side of rcd and on rcd 2 there was 0.60 Ohms difference. Just wondered if...
  16. S

    RCD's Misbehaving

    Hi, I have a problem with 17t edition consumer unit (MK Sentry) on a TT system that has completely left me baffled. I'd be very grateful for an advice. On the left hand side of the board I have a 100 amp main switch. Immediately next to that a 30ma RCD controlling 3 MCB's and 2 spare ways...
  17. C

    Newly installed Consumer Unit is tripping RCD's when hoover or kettle on

    Hi all, I'm new here so bear with novice questions pls. I have renewed an old CU (the one with pull out fuses) to a very new one with 2 rcd's and 10 MCB's. the old one had the kitchen sockets and the 1st floor sockets on the same ring (weirdly). Layout is this: RCD1 63A with: 1 x 40A MCB for...
  18. R

    Condition report for the old installations

    I have to do a Condition Report for an old installation. Everything is ok but the installation doesn't have RCD's, even for those circuits required by the 17th Edition. Can I write that the installation is "satisfactory" without RCD's ?
  19. D

    Bathroom RCD's

    Installing a fan for a bathroom the other day resulted in an interesting discussion with the client,who is a now frail but mentally intact long retired sparky. I had fitted an RCD FCU at the DB to the associated lighting circuit to cover the only bathroom circuit,as there were no RCDs present or...
  20. T

    Some theory about cable sizing, electrical circuits, RCD's, switchgears etc.

    Hi guys, As I post in the head of the topic I am loking for some theory about the above things.I was looked here in this chapter but I can not find nothing.So if somebody of you have some materials about that I will be very thankful to send it to me.Or paste some links here.I prefer somthing for...

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