Pocster Posted November 15, 2023 Share Posted November 15, 2023 Sparky left me a collection of cables . The 10mm is mega chunky - assume I use this for ovens and hob ? 2.5mm for standard sockets ? Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Author Share Posted November 15, 2023 (edited) 1mm for low voltage lighting Edited November 15, 2023 by Pocster Link to comment Share on other sites More sharing options...
Temp Posted November 15, 2023 Share Posted November 15, 2023 3 minutes ago, Pocster said: The 10mm is mega chunky - assume I use this for ovens and hob ? 2.5mm for standard sockets ? Depends on the distances and load but yes the 10mm would be for an electric hob or combined oven and hob. Many Electric ovens (without rings/hobs) only need 2.5mm^2 and quite a few are supplied with a plug to suit standard socket.. 2.5mm is for sockets (ring mains effectively have two 2.5mm^2 in parallel as power flows both ways around the ring). The 1.0mm^2 is for lighting but some people prefer 1.5mm^2 as I think it can be covered with insulation without derating? However with LED lighting I don't think that's the issue it once was. 1 1 Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Author Share Posted November 15, 2023 5 minutes ago, Temp said: Depends on the distances and load but yes the 10mm would be for an electric hob or combined oven and hob. Many Electric ovens (without rings/hobs) only need 2.5mm^2 and quite a few are supplied with a plug to suit standard socket.. 2.5mm is for sockets (ring mains effectively have two 2.5mm^2 in parallel as power flows both ways around the ring). The 1.0mm^2 is for lighting but some people prefer 1.5mm^2 as I think it can be covered with insulation without derating? However with LED lighting I don't think that's the issue it once was. Yeah - I’ve seen ovens run off a standard plug . I’ll stick chunky 10mm in as a ring . Distance from oven / hob to consumer unit is under 10metres . I’ll daisy chain from oven to other oven to hob then back to CU . No insulation over my lighting wiring so I’ll leave as 1mm Link to comment Share on other sites More sharing options...
Temp Posted November 15, 2023 Share Posted November 15, 2023 I think two single runs in 10mm one to the hob and one to the oven area would be normal. The 10mm^2 would be terminated at the oven/hob end with a accessible Cooker(hob) switch and a Cooker Connection Unit (faceplate/junction box thing). Run a 2.5mm ring to sockets as well so you can choose later if you want to hard wire the oven to the 10mm^2 or just plug it into a socket. 1 Link to comment Share on other sites More sharing options...
Temp Posted November 15, 2023 Share Posted November 15, 2023 https://www.voltimum.co.uk/articles/technical-guide-installing-cooker-circuit 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted November 15, 2023 Share Posted November 15, 2023 27 minutes ago, Pocster said: .... I’ll stick chunky 10mm in as a ring . .... 10mm is 'king hard work....... Link to comment Share on other sites More sharing options...
ProDave Posted November 15, 2023 Share Posted November 15, 2023 41 minutes ago, Pocster said: I’ll stick chunky 10mm in as a ring . Do come and post pictures when you have done that. I will be surprised of you find a 13A socket that will actually fit two 10mm cables. 1 Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Author Share Posted November 15, 2023 2 minutes ago, ProDave said: Do come and post pictures when you have done that. I will be surprised of you find a 13A socket that will actually fit two 10mm cables. That’s the thing I thought . It’s well chunky ! . I’ll put the cables in position for oven / hob but not clipped . Sparky can then pull them out and replace if it upsets him . He left me 10mm ( actually got 2 rolls of it ) . Link to comment Share on other sites More sharing options...
ToughButterCup Posted November 15, 2023 Share Posted November 15, 2023 8 minutes ago, ProDave said: Do come and post pictures when you have done that. I will be surprised of you find a 13A socket that will actually fit two 10mm cables. Our cooker: 10mm feed intended - until reality struck. Now there's 10mm to a hewooooge socket and a 13 Amp plug to a Bosch (natch) induction fingy.... 10mm - I could hardly cut it with an angle grinder ...... 1 Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Author Share Posted November 15, 2023 18 minutes ago, ToughButterCup said: Our cooker: 10mm feed intended - until reality struck. Now there's 10mm to a hewooooge socket and a 13 Amp plug to a Bosch (natch) induction fingy.... 10mm - I could hardly cut it with an angle grinder ...... I struggled with wire snips to cut the 10mm . Better to over spec I guess ( as I have the cable ) and let sparky sort . Link to comment Share on other sites More sharing options...
Thorfun Posted November 15, 2023 Share Posted November 15, 2023 (edited) 10mm to the induction hob (11kW iirc) for us and 2.5mm feed for each oven (yes 4 cables!). Each will have an isolation switch in a kitchen unit. Edited November 15, 2023 by Thorfun Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Author Share Posted November 15, 2023 30 minutes ago, Thorfun said: 10mm to the induction hob (11kW iirc) for us and 2.5mm feed for each oven (yes 4 cables!). Each will have an isolation switch in a kitchen unit. I’ve resisted but I can’t any longer … why 4 ovens ? - forget SWMBO bs ! . What would you be cooking that requires 4 ovens ? . Indulge me ! 😊 Link to comment Share on other sites More sharing options...
Onoff Posted November 15, 2023 Share Posted November 15, 2023 4 hours ago, Pocster said: I’ll stick chunky 10mm in as a ring . This I have to see! 😂 Generally 10mm2 should just come as a radial from your cooker / hob breaker and terminate in a 45A cooker switch. From there, again in 10mm2 to a cooker connection plate. You can get "double enders" so you can feed the hob and oven. Please go into the wholesaler and ask for such: https://www.tlc-direct.co.uk/Products/AA45DCOP.html 1 Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Author Share Posted November 15, 2023 6 minutes ago, Onoff said: This I have to see! 😂 Generally 10mm2 should just come as a radial from your cooker / hob breaker and terminate in a 45A cooker switch. From there, again in 10mm2 to a cooker connection plate. You can get "double enders" so you can feed the hob and oven. Please go into the wholesaler and ask for such: https://www.tlc-direct.co.uk/Products/AA45DCOP.html All for a double Ender 😉 Link to comment Share on other sites More sharing options...
Pocster Posted November 15, 2023 Author Share Posted November 15, 2023 So ! Do I want CU to oven switch 10mm then this to oven to 2nd oven to hob 6mm for those ? or - should each have a seperate ( 6mm ? ) run from oven switch ? I.e radial from that ? Link to comment Share on other sites More sharing options...
Onoff Posted November 16, 2023 Share Posted November 16, 2023 8 hours ago, Pocster said: or - should each have a seperate ( 6mm ? ) run from oven switch ? I.e radial from that ? -10mm to the cooker switch. -10mm to the double cooker connection plate. -2 seperate runs from there one to each appliance. 6mm I imagine will be fine to each but check the loads. Also that it will fit in the appliance. Sometimes a butyl flex is better. Link to comment Share on other sites More sharing options...
MikeSharp01 Posted November 16, 2023 Share Posted November 16, 2023 14 hours ago, Pocster said: actually got 2 rolls of i Rich beyond the dreams of avarice. Link to comment Share on other sites More sharing options...
SteamyTea Posted November 16, 2023 Share Posted November 16, 2023 15 hours ago, Pocster said: 1mm for low voltage lighting A 10 m run of that will have a percentage volt drop, at 1 A/12V of 7.3%. I think that is outside the regs. Link to comment Share on other sites More sharing options...
Pocster Posted November 16, 2023 Author Share Posted November 16, 2023 4 minutes ago, SteamyTea said: A 10 m run of that will have a percentage volt drop, at 1 A/12V of 7.3%. I think that is outside the regs. Nah nah - all are well under 10m Link to comment Share on other sites More sharing options...
Pocster Posted November 16, 2023 Author Share Posted November 16, 2023 30 minutes ago, MikeSharp01 said: Rich beyond the dreams of avarice. Not sure why he got me to buy 2 rolls of 10mm …. Link to comment Share on other sites More sharing options...
ToughButterCup Posted November 16, 2023 Share Posted November 16, 2023 12 hours ago, Pocster said: I’ve resisted but I can’t any longer … why 4 ovens ? - forget SWMBO bs ! . What would you be cooking that requires 4 ovens ? . Indulge me ! 😊 Hmmm, easy.... the discussion goes like this.... Muggins " How many ovens do you need love?" SWMBO "4" Muggins "Wha? 4 ... why ? SWMBO "How many cross-cut saws have you got ... and I think I saw about 6 or 7 drills - some of them huge in that massive cupboard of yours, then there's the table saw - and the 'spare' in the other container . And (warming to her annoyance) how much did that lot cost eh? Tell me that ? LONG PAUSE ................................................. Muggins "Well ducks, ya should have told me that a year ago when I asked you to approve the kitchen plan. ... not enough space now " I have learned the hard - very hard - way that when I play an ace, I should never - ever - ever - grin. 2 Link to comment Share on other sites More sharing options...
joe90 Posted November 16, 2023 Share Posted November 16, 2023 33 minutes ago, SteamyTea said: 1mm for low voltage lighting Some People don’t realise that low voltage often needs bigger cables !!! (Less volts = more Amps) 1 Link to comment Share on other sites More sharing options...
Pocster Posted November 16, 2023 Author Share Posted November 16, 2023 19 minutes ago, joe90 said: Some People don’t realise that low voltage often needs bigger cables !!! (Less volts = more Amps) I do have a confession here . I haven’t actually used any of the 1mm for anything . It’s solid core and makes it difficult with the light fittings . Link to comment Share on other sites More sharing options...
Thorfun Posted November 16, 2023 Share Posted November 16, 2023 14 hours ago, Pocster said: I’ve resisted but I can’t any longer … why 4 ovens ? - forget SWMBO bs ! . What would you be cooking that requires 4 ovens ? . Indulge me ! 😊 2 x ovens for cooking meals in. also one child has an allergy so for some foods we need to cook separately. 1 x microwave. then 3 ovens wouldn't look right so to even it out we got a steam oven as well. makes everything look aligned and appeals to our compulsive natures. 1 Link to comment Share on other sites More sharing options...
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