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Cable size for grouped cables

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Discuss Cable size for grouped cables in the UK Electrical Forum area at ElectriciansForums.net

J

Jimmyb

Hi all been working on site today with another sparky and was only helping him out but i was questioning his cable grouping, he has grouped cooker (32A-6mm) and Kitchen Ring & Down Ring all though same holes for 3meters which i said i just would do this, but like he said if you work the calcs out its fine.

I know for rings each leg has to carry min 20amp so when i got home and worked it out it doesnt seem the rings are ok but cooker is, have i done it wrong ?

Please help :( lol

Many Thanks

Jimmy
 
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drill 4 holes at least 3 diameters apart...make the holes large enough to get cables through without burning them whilst pulling them in.....
you should have enough holes to carry the cables through..(for a avarage house anyway)...and as long as the diameter is a 1/4 of the joist depth and is set so the top and bottom of the holes drilled are a minimum of 50mm from either the top or bottom surface of the joist....then your good
christ...whats hard about that?
 
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Sharpend said:
You haven't seen what he's drilling with!
Click to expand...

oh...its one of these is it...

[ElectriciansForums.net] Cable size for grouped cables
 
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Cut out some notches top and bottom and just lay the cables in - much easier than yanking them through holes. If its good enough for plumbers... :D

(Note: do not do this. Drill your holes in the correct zones as described in the OSG or EGTTBR)
 
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