Wire through a duct

Location
Cumbria
If the alarm is low voltage, it's not supposed to be in the same duct, for safety, but also it will pick up induced voltage and make you pull your hair out.
Not for alarm so no problems there, just using that size wire. But thinking about it , does that mean it will just not work (and make one pull their hair out ) or give a charge to the wire (and make your hair stand on end)
 

milkloss

Member
Livestock Farmer
Location
East Sussex
Bit of nylon line tied to two (for strength) carrier bag handles So it's like a parachute. Air compressor behind it will blow it through. Progress to larger rope big enough to pull your wire.
 

TheTallGuy

Member
Location
Cambridgeshire
Not for alarm so no problems there, just using that size wire. But thinking about it , does that mean it will just not work (and make one pull their hair out ) or give a charge to the wire (and make your hair stand on end)
There's two issues, firstly is that it's possible for the mains cable to induce noise onto the low voltage cable & without knowing what it's doing it's difficult to say if its likely to work - for example with alarm systems the induced noise can be enough to cause false triggers. The other & more important is that if the insulation on the mains cable degrades then there is a risk that the low voltage cable will not withstand the voltage and thus the low voltage cable could end up energised with mains.
 

Highland Mule

Member
Livestock Farmer
Fine fishing filament, a small magnet on the end of it and a much bigger magnet to slide along the outside, pulling the little one along inside the pipe. Get someone to keep an eye on the fishing filament and let you know any time that contact is lost/ the line stops being pulled.
 

Bury the Trash

Member
Mixed Farmer
Joking aside
its Quite simple really unless you are thick just disconnect one of the electric wires and pull a lightweight piece of duct string through with it (y)i would've done it days ago ' bide posting every basic question on a forum instead of working things out for yerself :rolleyes:
 

robs1

Member
Joking aside
its Quite simple really unless you are thick just disconnect one of the electric wires and pull a lightweight piece of duct string through with it (y)i would've done it days ago ' bide posting every basic question on a forum instead of working things out for yerself :rolleyes:
The only issue with that is if it gets stuck on a corner the op will have lost part of the power, if I went down that route I would connect a new cable properly to the first one so if it got stuck it would still work, just tie a draw string to the join . Unless it's under concrete or tarmac might just as quick to RIP it up and start again
 

Bury the Trash

Member
Mixed Farmer
The only issue with that is if it gets stuck on a corner the op will have lost part of the power, if I went down that route I would connect a new cable properly to the first one so if it got stuck it would still work, just tie a draw string to the join . Unless it's under concrete or tarmac might just as quick to RIP it up and start again
The light string would be used to pull through a heavier or light rope , like bt use or used to ..
Then use insulation tape to bind... smoothly .... that string to rope ,rope to new ( or old ) cable .
 

CHAP Webinar - Innovative tools to overcome the challenges of Regen Ag

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Applying principles of regen ag can incur a range of on-farm challenges. Learn how innovative tools & machinery can help with these hurdles.

This event will be held online from 1pm to 2pm on Thursday 2nd December 2021 so please block it out in your diary.

About this event​

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