Interesting to watch Nagy at 2:18 and how much pressure he is putting on his torque screwdriver to get it to click over, seems to fly in the face of those that told me that 2.1N is only just over hand tight.
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Discuss Why does the UK use rings for sockets? in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
He may be putting more downwards pressure to stop it camming out the screw head.Interesting to watch Nagy at 2:18 and how much pressure he is putting on his torque screwdriver to get it to click over, seems to fly in the face of those that told me that 2.1N is only just over hand tight.
I’ve got the same torque screwdriver, you do have to apply a bit of pressure on the 2.8Nm for the Hager mcb,s , Schneider rcbos are from memory around 2Nm so not so much pressureInteresting to watch Nagy at 2:18 and how much pressure he is putting on his torque screwdriver to get it to click over, seems to fly in the face of those that told me that 2.1N is only just over hand tight.
Some places in Pak use RFCs.I take it you're allowed to use radials for sockets?
So why does anyone bother with rings, seems like extra hassle to me.
You occasionally see rings on 20A fuses (or upgraded to plug-in breakers). They work fine but obviously a higher risk of tripping if a lot of loads on them, and slightly poorer selectivity with end equipment fuses as the instantaneous trip is around 100A instead of 150A.Just a few things i'm throwing out - Rings seem like they would be safer on 20A MCB but I guess there's very few accidents for this to be questioned by the powers that be.
Other way round. The use of the RFC (or lots of sockets on a high current radial) is possible with fused plugs.If rings disappeared hypothetically would we loose the fused plug?
They do. Many former commonwealth countries continued with the old 5A/15A round pin plugs with many radials (e.g. India), or a few moved to the 13A plugs due to ties with the UK extending beyond the post-WW2 introduction of them (e.g. Hong Kong).I think a few other Asian countrys use them and wonder if they use Fused Plugs
I have got a copy of L'installation Ă©lectrique so have to look at that again but I'd love to see some books from other European country's
Ah my copy is from 2009 (a mate lent it me) and then you could only use five sockets on 1.5mm and eight on 2.5mm. Should probably get an updated version.In France radials are eight sockets on 1.5mm on 16amp MCB, twelve sockets on 2.5mm on a 20amp MCB, recently been updated to a double socket counting as two, this used to be only one, so there was the possibility of having twenty four sockets on 2.5mm, maximum of eight MCB's/RCD, not forgetting beside the obvious ones, ventilation, well pumps, alarms, heat pumps, UFH, electric radiators, Jacuzzi, Swimming pool, door entrance system, intercoms, electric gates, window blinds, towel rails, washing machines, dish washers, tumble driers and any type of water heater have to be on their own circuit, not sure if they have included fridge's and freezers yet, but there was talk of this, all off the top of my head, so I may have forgotten a few salient points.
So they are very much only short circuit protecting the final cables then?In France radials are eight sockets on 1.5mm on 16amp MCB, twelve sockets on 2.5mm on a 20amp MCB,
Reply to Why does the UK use rings for sockets? in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net