radial

  1. N

    10mm radial ?

    i have a spare 10mm cable under my kitchen cabinets which i ran in ages ago intending to use it for power outside, however i changed my mind and used 16mm instead. so was thinking of putting all appliances on 10mm radial with fcu's. can anyone think why this would be a bad idea ? cheers
  2. Scolmore

    The Ring is dead, long live the Radial!⚡

    The Ring is dead, long live the Radial!⚡ When wiring socket outlets do you: 1. Use ring final circuits 2. Use radial circuits
  3. H

    Verifying polarity on radial ccts

    Hi I've got my 2391 assessment at the end of the week and I've managed to confuse myself (and not for the first time) I get how performing R1+R2 and R1+Rn on a ring also confirms polarity. The thing that is confusing me is how does performing only a R1+R2 on a radial socket cct (and operating...
  4. mak

    Is there a max Zs for lighting circuits?

    I can't find anything related to this in the regs so I probably misunderstood the question. The way I see it the max Zs for any lighting circuit depends on the circuit breaker for that circuit. Say we have a lighting circuit with 100x36W ceiling lights which gives us a load of 16A, we choose the...
  5. N

    4mm radial from ring feeding CUs

    Afternoon all, my boss is trying to have me sign off a job someone has done. 4mm radial off a ring main feeding 2 CUs in shed all MCBd correctly. RCD protected. NOT FED OFF FUSE SPUR Is there any reg this may no satisfy. It all seems okay due to ratings of cable etc but I’m not confident thanks
  6. T

    “Phantom” Short on radial circuit

    Hi, I’ve been recently working on a living trailer for a friend, when they have the supplies connected (240VAC 16A) they have nuisance tripping on the RCD. I’ve traced through and found an outside waterproof socket to be at fault, short circuit between live and earth. Removed the socket and...
  7. M

    Suitable MCB for Radial Circuit?

    Hi all, I am installing a Radial A2 circuit which by rule it should have an MCB of 32Amps, but when I reference the table 4D1A using reference method A or B, current are 26 and 32A respectivitly.. So the question is why we go for a 32A mcb and not 25A one? Thanks
  8. T

    Cooker circuit used as kitchen sockets radial

    Hi all,I found a 6mm “cooker” circuit feeding 4 sockets in the kitchen as a radial. R1+R2 tests fine and Zs is low. Can’t see where they are jointed but it goes from 6mm to 2.5mm. If everything tests fine, can’t see a problem leaving it as is. Will have to downsize the mcb as it’s currently on a...
  9. P

    Can I join 6mm and 2.5mm cable in radial circuit

    Hi all, I’m new to this forum so please bear with me. I live in a bungalow and would like to repurpose an unused shower cable to supply one new double socket. The radial shower circuit cable is 6mm and protected by a 40A mcb. My plan is to connect the 6mm cable to a length of 2.5mm cable which...
  10. Mark Wright

    Maximum Branches from Socket on Radial that's acceptable.

    What would be the maximum amount of Branches from a Socket on a Radial that you would find acceptable? I've seen 4 I'm not talking about Design or being Tidy or keeping it nice for testing but how many would you say No that's just too many?
  11. J

    4mm radial from 2.5mm ring on 32A?

    Go easy I’m new to this but.. I’ve just come across a 4mm radial (garage) being fed from downstairs 32A MCB ring. Trying to locate the connection but question is does this comply with BS7671? I can’t tell if it’s on a 13A FS or not at the moment.
  12. T

    Kitchen on a 20a Radial

    Hi all, just looking for your thoughts on this. Been to look at a job where there is existing kitchen wiring that needs moved about etc. Having looked at it, rather than extend cables etc im going to pull a new circuit in for the kitchen. Currently the DB has no RCD coverage, so im putting a new...
  13. EastCoastPete

    Contactor for Heating Radial

    Hello All, I've a 1 bedroom flat installation. All standard but the customer will AirBB it and wants a master switch to encourage guests to turn off the (3x 1Kw) wall heaters when they leave. I'm thinking 16A contactor, any good /bad makes or takes on this route? Thanks, Pete
  14. L

    radial circuit to power washing machine, dryer and dishwasher

    Now chaps, Will a radial circuit on a 20amp rcbo be enough to power a washing machine, dishwasher, dryer and fridge freezer? At the moment the radial has a 2 gang to power 2 appliances and a 1 gang to power fridge freezer, possibility of spuring of this circuit to power an extra appliance...
  15. Nelder

    Non Domestic 20A Radial

    Hi, I'm curious to get peoples opinions on this non domestic situation please: A 20A SP&N radial Fed from a 20A MCB 70 degree singles, grouped in metal trunking fails with 2.5mm singles and even 4mm singles. I vaguely remember reading something that, if a cable is loaded to less than 30% its...
  16. K

    Can anyway help with Radial circuit maximum floor area help?

    Hi everyone I am doing level3 design andI have a circuit to design but I have confusion with radia circuit maximum floor area to understand? I have a socket to feed on the design and floor area according to my knowledge is Length multiply width so in that case it exceeds 75 m square so I am...
  17. M

    Dividing radial off FCU. Is it ok?

    I have a radial running from the CU to an FCU then to 2 outside sockets. Can I add another socket going from the 1st in another direction? I have included a diagram. thanks for the help people :)
  18. D

    Adding a radial lights

    Hi Guys, I'm trying to add 2 new pendant lights to my hallway. I originally had one pendant and have added two more in a radial configuration rather than a daisy chain. I cut the cable to the original light and added a 4 way junction box (see diagram). I have connected all the live/neutral and...
  19. J

    Low IR on new radial circuit

    Hi All, I have a very mystifying problem on a very simple circuit. It is a new radial circuit for a garage power supply, it's wired in 2.5 T&E 16A MCB 30mA RCD. The cable goes directly from the dis board up the wall in trunking to the roof space where it is clipped to the joists before...
  20. D

    Ring, Radial and Earth

    Hey guys! Hope some of you can help me out quickly! So I've got incoming PV and battery supply of 2000W at roughly 8.7A. This is through an RCBO and to a RCCB 30mA garage style consumer unit, just with a 16a and 6a MCB. The 16A serves 5 sets of double sockets with about 15M of 2.5mm. 1st...

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