rcbo

  1. Y

    Can I use a 32 amp rcbo on a radial circuit.

    Hello Is it OK to use a 32 amp rcbo on a radial Circuit. Cable size is 6mm2, cable length is about 15 m. There are 4 double plugs on the circuit. Loads are kettle 2.2 kw, washing machine max 2 kw, electric cooker 1 kw. Cheers
  2. ELECNEWT

    Testing RCBO at Light Switch

    Is it acceptable, using a two-wire RCBO tester, to test at a light switch using the phase and earth wires? If it is acceptable are there any disadvantages?
  3. T

    Board change (RCBOs) Lights trip sockets

    Evening all, I changed a board today in a ground floor flat. 3 circuits with separate RCBOs (Shower 40A, sockets 32A, and Lights 6A) Switching on any light switch causes the both RCBOs for the lights and sockets to trip. Insulation resistance results are in the 100s between conductors on...
  4. R

    Electrician Jobs RCBO trip test query - Testing wrong or is there a fault?

    Hi, Can anyone please explain why my friend's 30mA trip RCBOs passes the trip test (e.g. x5 is less than 40ms) when the test is done at the consumer unit but fails when the test is done at the sockets. Is he doing something wrong or is there a fault somewhere (the RCBO or the circuit...
  5. D

    Selling old MCB'S and RCBO's

    Hello everyone, I have a garage full of electrical gear as i'm sure many of you do, various bits left over from jobs. Part on my lifelong mission is to keep getting bits out and not just getting gear in, as it's all money! So i literally have thousands of old MCB's, RCD's, RCBO's fuses...
  6. MFS Electrical

    Aye or Naw? Trimming RCBO Leads

    I was always taught never to trim RCBO leads. I noticed on another thread the other day/earlier on that someone said they did. What’s the general consensus on the subject? The reasons explained to me as to why we shouldn’t cut them were the RCBO was calibrated with that length of cable on so it...
  7. Alrebcon180

    Dangerous upgrade to crabtree rcbo's

    Has anyone installed the new compact rcbo from crabtree and noticed a flaw that they have introduced that doesn't exist on the older larger model starbreaker rcbo.. The basics of it are that the new compact rcbo when plugged into the busbar in a circumstance that many will come across where you...
  8. P

    Wylex RCBO no earth tail

    recently brought a new Wylex RCBOb NHXSS1B16 It has not come with a earth tail like all the older NHXSBS1B16 but had the neutral tail. Do I just connect the earth from the cable I’m feeding into the earth bar ? Just curious tbh ....
  9. soms

    RCBO for old Square D distribution board

    Hi, A relative has moved into a flat with a mid-80's Square D QO1 12F distribution board, which has MCBs on all outgoing ways. There are proposals to update the kitchen with a desire for some additional socket outlets. To meet the requirements of Part P and by extension, BS 7671, RCD protection...
  10. Marcus Vaughan

    Square D MCB to RCBO

    Hi All, I have just been to to view a job on my way home. The customer is asking for a new double socket immediately below the consumer unit (that's convenient!). It's an old Square D board without an RCD in sight. I guess it would be very easy to install an RCD socket outlet - spurring from...
  11. M

    RCD on feeder to other DB

    Hi Guys, I am new here and would like you have your expert advice. So I have a dwelling with 4 floors - basement, ground, first floor and roof and I was going to make 2 DBs, one in the ground floor and in the first floor. Ground floor DB will cover basement and ground floor. First Floor DB...

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