metal

metal

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  1. L

    Metal conduit

    Does metal conduit need earthing , and if so what size ? I’ve pulled twin and earth double insulated cable through old metal pipes, previously used for singles, the circuit is on a RCD.
  2. T

    Metal back boxs and r2 reading

    Might be a dumb question, but do metal back boxs have an effect on the R2 reading I feel like they dont as when you times r1 or rn by 1.67 you get the expected r2 of the cable
  3. KungFuTurkeyLeg

    Rammed metal trunking

    Hi all After some opinions from a job I did previously. I was installing fibre into the existing trunking, and not touching the electrics. It was a 16 floor council block with 4 risers on each landing. Made up of 2x1 framing and MDF boards with firestop board screwed to the back of them. Rough...
  4. V

    EICR code for no upfront rcd on TT split load metal board: poor install

    See this time after time - poor installation: new split load board on a re-wire tt installation. The main switch is not a time delay rcd. The board is metal and there are split load single insulated conductors before the 30mA rcd's. If these conductors touch the metal work the board may...
  5. J

    Extraneous metal staircase

    If you were to test a metal staircase on the side of the house on insulation resistance and it gave you a dead short. Would that need bonding. Test was done at the MET with all parallel paths disconnected. Staircase next to class 1 metal light fittings
  6. T

    Can SWA be run in the same metal trunking as singles?

    I have checked the regs and can't find anything to say this can't be done. Although I'm worried about cable movement in the case of short circuit damaging singles in the trunking
  7. J

    Metal building with living quarters rough in

    Metal building with living quarters the panel is on the outside and about 20 feet away from new build that will be 2x6 what type of shielded wire do I need to run and will it need a junction box to convert it to romex? Would it be best to add a secondary panel inside of the new build I would...
  8. K

    No flex earth only fly earth in metal light fitting

    Hi, I do basic electrical DIY like changing light fittings and have got a light to put up that only has a fly earth and no flex earth (see pic). I’ll be buying a junction box but just wondering why I’ve no flex earth? Do I just use the fly in the junction box alone? TIA
  9. N

    Best practice earthing metal plates and/or back boxes - fly lead or not?

    Hello everyone, Following on from my previous post where I received advice on taking a spur off a 40a feed (thank you). I performed the work today, installing a surface fixed metal faceplate and back box. When terminating to create the spur (tight fit into terminals with both 6mm and 2.5mm!)...
  10. R

    Metal Tool Box or Alternatives

    I’ve been looking on eBay for a new tool box. My Stanley one has cracked. I’ve seen this. But I’m not sure about the depth of the draws for hand tools...
  11. newfutile

    ANPR metal housing not connected to electrical earth

    As above the chest level from ground ,metal ANPR housing has no connection to earth ,it has monitors modems and a camera inside with a 230 volt supply run from out totem pole lighting . Its on a 6 amp rcbo. the ZS measures 1.93 ohms cpc to metal case measures 158 ohms so its an extraneous...
  12. rduna755

    Metal shielding and neutral , Monophase

    Hi I know its dangerous but if there is no grounding and if I connect metal sheet to neutral will it empty rfi hitting on it?
  13. R

    Circuits earthed on metal box/conduit: Does it need a rewire?

    I'm getting an old fuse board upgraded in an office block. The electrician has just told me that most of the circuits don't have earth cables coming directly from the fuse box. I've taken a photo of one of the light switches. (attached to post) 1. It has the earth attached to the metal switch...
  14. ReevesMA

    Does 48v DC running Into my residence have to be in metal conduit?

    I have a nickel iron battery I have chosen to put into a shed with Ventilation added for the hydrogen off gassing. I am planning to run the dc from this battery over to the soffit then across an attic space and down into a hybrid inverter that will be in my garage. I am planning to run 4/0...
  15. D

    item with a metal case and no earth wire in the plug

    Performing the PAT inspection on some science equipment and I have found some items that were passed by the previous company that performed it however it failed the earth bond test and has a metal case its a air pump. upon closer inspection, I found that they only have two core wires and have...
  16. J

    Is there a 20mm PVC/Plastic similar to a 20mm Metal Flanged Coupler Galvanised ?

    Hi All. I was wondering if there is a 20mm PVC flanged coupler version, similar to a metal flanged coupler galvanised ? Kind Regards. Jag.
  17. F

    Can I run mains cable inside hollow metal lintel?

    Hello I’m going to install a hard wired 230v security camera, incorporating floodlights, outside and above garage door onto brick. An exposed expanded metal lintel (that is hollow) runs across the garage door opening. Outside it has a decorative brick facing. The brick is not load bearing. I...
  18. nick9one1

    shock from metal lightswitch in kitchen

    UK here. I've noticed the light switch in out kitchen gives a small tingle when you use it with bare feet. I ran an extension from another socket in the house and found that that there is 240V between the switch and earth from the socket. I tested resistance between the known good earth and...
  19. I

    UK SPD in Existing metal clad CU?

    Hi all! Does an SPD have to go at the front end next to the main switch or can it be fitted with its MCB at the end of the row of MCBS on an existing CU to the far left? EG main switch on the right, end of MCB row on the left will have the OCPD for the SPD, and then the SPD sat to the left of...
  20. HappyHippyDad

    Metal blanking plate to protect from wood burner stove?

    My customer is having a wood burner installed. The stove installers have said he needs to get the 2 sockets that are directly behind the new stove position removed. They are approx 9-12" away (guess). It would be a right pain and expensive for the customer to have the cable removed from the...

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