Advice on Pulling 6 mm2 single core cable through 20 mm Conduit

[Maximus Rumpas]

Hi,

I would like to ask your advice about how difficult it might be to pull cables through 20 mm plastic conduit. (easy, moderate, hard, impossible)

I am running two separate lines for a cooker and hob in 6 mm2 single core stranded cable. Both runs will follow the same route.

4 meter run from distribution board via 90 degree inspection bent to an inspection box next to soil stack.

Next 2.5 meter run through Bathroom/Kitchen wall to an inspection box under sink (minor set to allow for wall levels)
Then either
4 meter run, chased into wall via 90 degree inspection bend to a third inspection box.
or
4 meter run via 300 mm drop to Floor level - two 90 degree inspection bend to the third inspection box.

Lastly 1.5 meter run to cooker or hob isolation switch.

On completion permanent access to inspection boxes - limited access to 90 degree inspection bends.

Your thoughts please.

Kind regards
Max

 

[Sintra]

Mate they make conduit in larger sizes than 20mm. I would go 25mm.

 

[Maximus Rumpas]

Thanks Sintra,

Due to limited clearance in some areas I would like to avoid using a larger conduit if it were possible to use 20mm. If the advice is that it is impractical then I will have to use a larger size.

Max

 

[gazzaabc]

I'm not understanding you? Can't you just tell us how many cables are in any one conduit and the sizes of the cables? You will struggle with 6mm in 20m conduit a specially with a bend. I think that's a no go

 

[ayjay]

you need 25mm and a spring to bend it and some lube
or use singles,not twe

 

[gazzaabc]

Lol@ the lube technique fairy does the trick every time. U will get 10mm if you use fairy lol jokes

 

[Maximus Rumpas]

Hi Gazzaabc,

I thought I had - separate feeds to cooker and hob in 6 mm2 single core stranded cable Live, neutral and a smaller earth. Three cables in total in one conduit run. I thought I might struggle and that I should go for 25mm but wanted to check first.

Kind regards
Max

 

[Maximus Rumpas]

Hi ayjay,

Never mentioned twin and earth. Question stated single core.

 

[gazzaabc]

If the earth is smaller you will defo get 3 cables down a 20m pipe if only 2 of them are 6mm. You won't even struggle

 

[gazzaabc]

Max if your using plastic pipe you can buy 2 types of elbows! Buy the larger type. it's a bigger and longer bend but its not as harsh on the bend as the smaller one and makes life a lot easier.

 

[Sintra]

If the earth is smaller you will defo get 3 cables down a 20m pipe if only 2 of them are 6mm. You won't even struggle

OP stated "I am running two separate lines for a cooker and hob in 6 mm2 single core stranded cable. Both runs will follow the same route." I am taking this as 2 circuits 6 x 6mm singles.

 

[Maximus Rumpas]

Hi Sintra,

O, I see how I might have confused you, sorry. One run for the cooker and a second for the hob. each conduit carries 2 x 6 mm2 + 4 mm2 earth. Apologies to all.

Max

 

[Sintra]

All clear now lol.

 

[ipf]

Max if your using plastic pipe you can buy 2 types of elbows! Buy the larger type. it's a bigger and longer bend but its not as harsh on the bend as the smaller one and makes life a lot easier.

One's an elbow, the other a bend.........I believe!

 

[GLENNSPARK]

Lol@ the lube technique fairy does the trick every time. U will get 10mm if you use fairy lol jokes

washin up liquid eh?.....jesus wept...don`t you dare!!
to the O/P.....go and get some 77........