Pissing about with only half a clue on the shed site.

[Stroppymonkey]

I’ve got a couple days off booked around Easter and need to get some drains and service ducts laid in. I am going to be picking up 3ph from next doors shed. Will be about 100m run of cable for that. I already laid in some 63mm stuff under the track way, and I will have chamber access to both ends of that. The next section will be about 600 deep going across to shed and under stone yard will be taking a 25mm cable / 25mm water line and and probably a 6mm cable as well. Slightly bewildered by all the duct choices available Any reason not to shove it all through a 110mm waste pipe with slow radius bends at the end? I have blue 63mm duct on-site so can separate the water easily enough.

 

[DaveDCB]

elec supplier will give you a spec of duct you need to use… don’t deviate from that!
Dig to the correct depth and tape / sand it up too!
Don’t put it in a 110 drainage pipe

 

[Stroppymonkey]

elec supplier will give you a spec of duct you need to use… don’t deviate from that!
Dig to the correct depth and tape / sand it up too!
Don’t put it in a 110 drainage pipe

Electric supplier not involved in this . Coming out of dads shed (via appropriate metering and fusing etc)

 

[DaveDCB]

Ah.. well that does change things a little.
You don’t need to duct it, just sand and tape.

If you want to duct don’t put it in something that someone may identify as something else in the future.. ie blue for water, brown drains etc
You can get plain black duct cheap enough.

Underground Cable Ducting - Flexible Utility Ducting - JDP

Flexible coil and twinwall underground ducting products for underground cable ducting, utility services and general purpose from JDP.

store.jdpipes.co.uk

 

[Stroppymonkey]

Ah.. well that does change things a little.
You don’t need to duct it, just sand and tape.

If you want to duct don’t put it in something that someone may identify as something else in the future.. ie blue for water, brown drains etc
You can get plain black duct cheap enough.

Underground Cable Ducting - Flexible Utility Ducting - JDP

Flexible coil and twinwall underground ducting products for underground cable ducting, utility services and general purpose from JDP.

store.jdpipes.co.uk

Need to duct it as yard surface will going down before cables coming in. So want a duct that will be easy to draw through. Think I will go for the 110mm twinwall ducting (which looks identical to twinwall drainage?) And use some premade bends. I always duct my water anyway in 63mm blue so will use that and keep it seperate.
We have reams of appropriate warning tapes

 

[CPS]

Electric supplier not involved in this . Coming out of dads shed (via appropriate metering and fusing etc)

My only 2 cents it this is, don't put the electric in the same duct as a telephone line (if you're puting one in) it can effect the signal

 

[Lancs Lad]

My only 2 cents it this is, don't put the electric in the same duct as a telephone line (if you're puting one in) it can effect the signal

Deffo, more likely be cat6 if it's yourself and afaik BT aren't pulling copper now. Or aren't supposed to be.
Bigger is better and leave a draw rope in your future self will thank you

 

[V8Druid]

My only 2 cents it this is, don't put the electric in the same duct as a telephone line (if you're puting one in) it can effect the signal

and if you are including any two way/remote lighting switching for LEDs, you'll need to fit 'snubber' capacitors at the light units to stop them triggering from inducted current from either the control lines or any other cables in the duct - don't bother asking how I know

 

[groundworker]

Need to duct it as yard surface will going down before cables coming in. So want a duct that will be easy to draw through. Think I will go for the 110mm twinwall ducting (which looks identical to twinwall drainage?) And use some premade bends. I always duct my water anyway in 63mm blue so will use that and keep it seperate.
We have reams of appropriate warning tapes
View attachment 70932

100mm twinwall is what you want but buy it in coils rather than sticks and you won't need to buy the premade bends as it's fairly flexible.

A drawpit is a good idea every 50m or at any (significant) change of direction.

 

[Stroppymonkey]

100mm twinwall is what you want but buy it in coils rather than sticks and you won't need to buy the premade bends as it's fairly flexible.

A drawpit is a good idea every 50m or at any (significant) change of direction.

Ta - Will check it out. Thanks for advice. Due to the layout and ther fact I have already put a 63mm duct under the lane ( in the middle of the overall run) I will do a catch pit both sides of that, so nothing more than 50m in one go. I think it will be 25mm cable going in. Never done it before but reckon its fun to pull through. Might be after some tips for that when the time comes.

 

[DaveDCB]

Decent blue rope, cable reel one end with someone manually turning it, mini digger other end jacked up in the air and wrap the blue rope around one track, gently move track lever and hey presto a cable puller

 

[Lancs Lad]

Decent blue rope, cable reel one end with someone manually turning it, mini digger other end jacked up in the air and wrap the blue rope around one track, gently move track lever and hey presto a cable puller

Lube and a Chinese finger are worth their weight in gold if you have any tight bends.
ive never used it for cables yet but thinking my eder capstan winch will be damn handy on any future cable jobs..

 

[Stroppymonkey]

Had to google Chinese finger! Will they work on water pipes as well?

 

[V8Druid]

Had to google Chinese finger! Will they work on water pipes as well?


View attachment 70934

yeh they're bloody good .. got a couple of different sizes here ... that's a very expensive sock ..

Pardon our interruption...

 

[V8Druid]

and as said above and just to reiterate ..... make sure you put another draw cord in with the cable you pull, for future use, once you've pulled what you have in there

 

[6feetdown]

Ah.. well that does change things a little.
You don’t need to duct it, just sand and tape.

If you want to duct don’t put it in something that someone may identify as something else in the future.. ie blue for water, brown drains etc
You can get plain black duct cheap enough.

Underground Cable Ducting - Flexible Utility Ducting - JDP

Flexible coil and twinwall underground ducting products for underground cable ducting, utility services and general purpose from JDP.

store.jdpipes.co.uk

Yeah electric duct is cheaper than soil pipe, I think 63mm is about £1 a metre

 

[Lancs Lad]

Had to google Chinese finger! Will they work on water pipes as well?


View attachment 70934

I did try it on a very stubborn armoured Flexi 20mm conduit once combined with a forklift and a strop but that's another story

I think it'll try and crush a pipe though

 

[Stroppymonkey]

and as said above and just to reiterate ..... make sure you put another draw cord in with the cable you pull, for future use, once you've pulled what you have in there

Yes, always do this with water

 

[Stroppymonkey]

Yeah electric duct is cheaper than soil pipe, I think 63mm is about £1 a metre

Optimum size conduit for 25mm armoured ? Think it’s about 26mm OD. I’d be happy pulling 25mm MDPE through 63mm….

 

[6feetdown]

Optimum size conduit for 25mm armoured ? Think it’s about 26mm OD. I’d be happy pulling 25mm MDPE through 63mm….

Not sure as most of the cables we pull are not drawing huge amounts