ring

ring

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  1. J

    Extending ring

    Hi guys, I’ve just been to a customers house. It’s an old house which has a few radial and ring circuits for sockets. They want 4 extra sockets to be installed. The ring circuit is feeding the whole house (not kitchen) would it be ok to tap into the ring circuit feeding the house and add the 4...
  2. S

    Unbalanced final ring

    I have seen a final ring that had the heavy appliances on one leg (L1). Drawing 19.5 amps in total, one leg (L1) was drawing 82% of the 19.5 amps of current. If the ring went up to 32 amps the 2.5mm cable would in theory be just safe enough under the 27 amp maximum. My question is, if 32 amps...
  3. R

    UK Ring main or radial

    I am moving to a bungalow which I imagine will need a rewire. I've spoken to a local electrician and when I was asking if there would be a ring main for the kitchen and another for the two bedrooms and lounge he told me that ring mains are old hat saying that radial circuits are preferred. For...
  4. C

    Emergency stop buttons on workshop ring main.

    Please forgive terminology. This is a DIY question. Domestic Workshop in new (new to us - small charity) premises that has its own RCD consumer unit with a ring main circuit and a lighting circuit. Has a few single-phase bench tools, saws, pillar drill etc. It's an odd one, it really is...
  5. J

    UK Thermal constraints on a ring Electrical design question

    Hi all, I am working on my revision for the 2396 exam and wanted to see if someone brainier than me could advise, when completing the thermal constraints equation t=(k²*s²)/I² on a ring circuit do you input the ring for s² as (2*2.5)². Example1 : Fault current 211A t= (115² * 2.5²)/ 211²...
  6. T

    Working out the length of a ring finals circuit

    r1: 1.15 r2: 1.80 rn: 1.15 r1r2 0.69 To work out the length of a ring in 2.5mm twin would this be correct 0.69/(19.51/1000) = 35m or would you use the r1r2 before you divide it by 4?
  7. B

    Installing an energy meter on a ring main

    Hi guys, I have a client who wants to install meters on every power circuit in order to monitor energy consumption etc. Just wondering if there is a specific method to wire up such a configuration on ring mains? As far as I can tell, I'd need to come out of the RCBO to the meter, and then have...
  8. P

    UK Re using a 10mm cable to provide a new ring

    I would like to reuse a 10mm cable to provide a ring circuit in an area. The cable is currently used for an electric shower, still connected at present and is fine. When the shower is removed I intended to replace the 40A breaker with a 32A, slightly reroute the cable and add a ring to then...
  9. Magw1tch

    Ring spotlight on old house help

    Hi all, I’ve purchased a Ring Spotlight camera and decided to remove the old spotlight that’s currently installed on the house we recently purchased. After taking down the old spotlight, I found four wires: black, brown, unsheathed earth, and grey. However, the Ring only has the usual three...
  10. W

    Ring flood light conduit adapter box

    Hi all, Looking for recomendations for a junction box adapater for a Ring flood light to 20mm conduit, black preferably. Thanks in advance.
  11. M

    Extending ring mains on top of plaster

    Essentially I have a "normal" socket in a ring mains, i.e. one 2.5mm T&E going in and one 2.5mm T&E going out. I am looking to simply add two more sockets. Easy enough from a wiring perspective. But my question relates to the location of the wiring itself. The sockets will be cut into a new...
  12. N

    RING MAIN CONFUSION

    Hi guys. Having a weird problem in a house that has suddenly happened. One half of the ring main has 240ish volts (fluctuates of course), and the other half is dropping to 210v - This is when I test L-N and L-E…. N-E shows nothing. Whenever I plug a table lamp in the the faulty side of the...
  13. PENKETH

    Ring camera. Taking a feed

    Hi. Has anyone ever taking a feed from an outside light to use as a spur to fit an outside plug to plug in a plug in ring camera. The only feed nearby to where the camera needs to go is near to an outside light cable. ? Thanks
  14. D

    A spur off a ring with FCU (UK)

    Hi guys, newbie posting! Does the following sound ok... Existing circuit: SOCKET on a ring -> spur to SWITCHED 3A FCU -> SWITCH -> hardwired FAN Proposed: A new UNSWITCHED 13A FCU will be inserted between the SOCKET on a ring and the SWITCHED 3A FCU (which protects the FAN to 3A). Then that...
  15. C

    Help with spurs from ring main

    Good evening. Currently sorting out my girlfriend’s flat for rent. I’ve found all sorts of bad electrical work. Can anyone advise if this is an acceptable way of connecting 2 spurs to the ring main? It will all be connected in a double back box behind a blank plate on a wall using 32amp rated...
  16. T

    Ring wired doorbells (again!)

    I’m trying to install my Ring doorbell (2nd gen) and I’ve discovered that the transformer feeding my Freidland isn’t producing any power. I suspect that I connected the jumper lead between the wrong wires (thanks to Ring’s really confusing instruction!) so I now need to replace it. I don’t want...
  17. R

    explanation of using 2.5mm2 T+E for a spur from a ring 32A (ring)

    Why can we use 2.5mm2 for a spur from either the CB or a point on the ring ? Why does this not have to be 4mm2 when using a 32A breaker ?
  18. S

    3183yag cable 1.5mm flexible for lighting ring

    Hello all, I think I might have done gone and ducked things up. We got a timer frame single story extension put on( 35sqm) For the Lighting circuit i used 3183yag multi strand flexible 1.5mm 3 core cable. Should I have used single strand?
  19. G

    Moving a ring main socket further along a wall

    Hi all, I'm planning to remove a stud wall seperating my dining room and kitchen. On the dining room side of the stud wall, there is a double socket which I want to move about 2 feet approximately along, and onto the back wall. The wires will be coming down from the ceiling as they all do on...
  20. T

    Comsumer unit - upstairs/downstairs ring mains

    Hello, I bought a new build and noticed the upstairs MCB is controlling some sockets on the opposite floor, so if I flick the upstairs MCB it's also switching off a socket downstairs (I think it's a spur) in addition to all the ones upstairs Is there anything within 7671 that states this is...

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