Square metres

[Farmelectrics]

Having brain freeze at mo after few beers so just a quick one a 20a radial your allowed no more than 50 square metres how do I calculate this to metres if it was a straight run for my radial

 

[Guest55]

So taking into account volt drop I would have to use 20a device Ie volt drop = 11x 20x43divided by 1000 = 9.46volts which is under the 5% allowed would you agree lads and that's me last post tonight going to watch the boxing thanks for your help

well if your calcs are borderline and high loads may be expected from the sockets theres nothing actually stopping you from using 6mm other than an extra £20 in cable.

 

[sparks1973]

i meant RCD at #11....lol...

 

[Geordie Spark]

well if your calcs are borderline and high loads may be expected from the sockets theres nothing actually stopping you from using 6mm other than an extra £20 in cable.

......... aye ... and how the Hell is he supposed to get two lumps o' that inter his terminals on the back o' his sockets ..... withoot giving them a haircut? :yes:

(6mm sq. cables in Geordieland are like me ... quite thick)

 

[Rauer]

^^^^^ hahaha I like the haircut terminology!!! I was thinking exactly the same! 4mm is bad enough!

 

[Guest55]

well you can run 6mm from the the cu to the first socket which is 28mtrs itself - having a 2.5 cpc for the longest section will bring your Zs right down ;-)
wimps , everyone of ya , i should have suggested 95mm swa lol.

 

[kingeri]

I wouldn't worry too much about the 50mm2/75mm2 floor area rule too much......getting the circuit calcs right is the main thing. The floor area limits are guidelines, actually I understand them to be historical guidelines........

 

[trev]

There's a big difference between 50 metres square and 50 square metres guys
50 metres square is 50m x 50m
50 square metres is 7.07m x 7.07m roughly

Don't worry I know where pedant's corner is

 

[Rauer]

well you can run 6mm from the the cu to the first socket which is 28mtrs itself - having a 2.5 cpc for the longest section will bring your Zs right down ;-)
wimps , everyone of ya , i should have suggested 95mm swa lol.

Stuff it lets get the 240's in or if its too heavy run two 120's !!

 

[Guest55]

actually I understand them to be historical guidelines........

correct , its based on the number of electric heaters per circuit needed to warm up living areas of a average size before the advent of central heating.

 

[Guest55]

50 metres square is 50m x 50m

no its not.
newcastle brown ale and maths dont mix lol.

 

[Geordie Spark]

no its not.
newcastle brown ale and maths dont mix lol.

Ye divven't wanna be mixin' it wi' owt bonny lad - that's sacrilege - just neck it oot th' bottle man !!!

 

[Guest55]

Ye divven't wanna be mixin' it wi' owt bonny lad - that's sacrilege - just neck it oot th' bottle man !!!

what i like about GS is he actually types geordie as well as speaks it lol.

 

[trev]

no its not.
newcastle brown ale and maths dont mix lol.

Yes it is Biff. 10 square metres is 1 metre x 10 metres. 10 metres square is 10 x 10

 

[Geordie Spark]

Yes it is Biff. 10 square metres is 1 metre x 10 metres. 10 metres square is 10 x 10

Noo that's summat ye divven't see very often ....... and educated Geordie. ......... Where's me gun ???? :83:

 

[trev]

Aye marra Aa had a canny gud edyukashun lyk