Discuss Observations From France in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

in some cases we use both radial and ring circuits but they must be labeled correctly
same as the circuits in the cu
for example on a lighting ckt the label attached to the conductor would have the maximum breaker size info printed on it.
balancing loads in a radial is an impossibility for the average consumer as they rarely get training on it, and find out they have too much on it when the breaker trips out.
recently i was given a laptop comp with a uk plug on the power pack.
it was an auto switching power supply so it was just a cord swap to use it.
by the way i really like the way the uk plug is designed (fused and rock solid construction)

my biggest complaint with diy and some hack sparks is they will just tap the nearest live conductor without checking its loads and install a utility outlet for heavy loads.
or install a breaker that exceeds the ampacity of the conductors.
 
From living in North America, I found the NEMA plugs ok for size, but the blades far too flimsy (stand on one...it bends...stand on a uk plug pin...you come off worse)
Also know what you mean about overloaded radials, father in law has a compressor in the basement, turn anything else on while the compressor is running...breaker trips out...
Other thing about NEMA plugs that isn't the greatest is the ability to remove the earth/grounding pin with little or no difficulty....(usually to use them with 2 pin extension cords or ancient outlets...)
Stove plugs aren't a bad idea though...some serious connector pins on those. If I remember correctly theres different 220v plugs depending on the amperage i.e. dryer plugs (20 or 30amps), stove plugs etc...
Though why single insulated "flat" extension cords are still permitted escapes me.....
 
Also....I never quite got my head round the choice of black and white for conductor colours....though the different pin colours inside rewireable NEMA plugs isn't a bad idea nickel / brass
 
so i'm not sure what you mean by the UK being the odd one out?
I meant general use of ring finals. Higher circuit rating, more outlets per circuit, more diversity. You get more flexibility from 1x 32A than 2x 16A but at the cost of complexity and being able to overload the cable. It's a different kettle of fish to ring MV distribution.
 
haha, well the french government are still paying for the maginot line. money's got to come from somewhere. LOL.
 
I meant general use of ring finals. Higher circuit rating, more outlets per circuit, more diversity. You get more flexibility from 1x 32A than 2x 16A but at the cost of complexity and being able to overload the cable. It's a different kettle of fish to ring MV distribution.

Ah, i understand what you were referring to now, not that i would wholly agree with you on the matter though!! ...lol!!

MV ring's are rarely working in a ring configuration, they mainly operate as open rings. The main idea to MV rings is that you can totally isolate, say any RMU or interconnecting cable between RMU's while still supplying all the other RMU's on the ring. Or supply the whole installation from either of the two supply sources....
 

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