Radial Circuit

[Sparky Ninja]

shall we start a radial appreciation society?

maybe a new thread with a poll to start it off? It's been debated many a time before

 

[Hawk81]

shall we start a radial appreciation society?

Excellent idea

 

[JonathanP]

But not aware that a 20 amp radial is okay???

 

[telectrix]

preferably wired in 7/029?

 

[Sparky Ninja]

But not aware that a 20 amp radial is okay???

One area of being absent minded doesn't mean we should assume on there being others.

 

[telectrix]

But not aware that a 20 amp radial is okay???

think that,s if he was born after 1955 he been brainwashed into "ring for all sockets"

 

[JonathanP]

And when all's said and done, there's more said than done.....!

 

[tony mc]

Talking about Radials is there a quick calc re volt drop simular to what is used in a ring

ie 4 x max vd x 1000 / ib x mV/A/M

 

[telectrix]

VD = (mV/A/m) x (I x L) /1000 . the factor of 4 is only used on a ring as it's a. half the length. b. 2 cables in parallel.

 

[nickblake]

Think you 'll find it on Table 8A page 158 of the on site guide its classed as an A3 radial max floor area served 50 square meters , you may well find that over the next few years the ring could be phased out always loads of talk about it , so your circuits at the mo are A1 which is your ring A2 radial which is 4 mm cable protected by a 32/30 amp fuse mcb and as mentioned the A2 radial

 

[tony mc]

Thanks having one of those blank moments.

Just thinking that with a 20 A mcb useing 50m(area 50 sq m) the lowest vd on 2.5 would be over 11.5v
But it a radial and all the ccts in theory is not going to be fully loaded all the time .

 

[Deleted member 26818]

Unlikely that the RFC will be phased out, anytime soon. Not with the price of copper as it is.