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Armoured Cable
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Rob R



Joined: 28 Oct 2004
Posts: 31902
Location: York
PostPosted: Thu Oct 20, 05 9:42 pm    Post subject: Reply with quote
    

Treacodactyl wrote:
Would it be possible to lay a pipe that the cable could be routed through at a later stage?


I would always put a ducting in for electrics & other wires, then you could save on not having to have amoured cable & be flexible to replace it at a later date if necessary. If you also make sure you leave a draw rope in when the cable is in place then you'll easily be able to add additional wires/cables too.

Second hand cable may also be an option? We got some big stuff through ebay a lot cheaper than it would retail new & it was as good as.

Treacodactyl
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 25795
Location: Jumping on the bandwagon of opportunism
PostPosted: Fri Oct 21, 05 6:02 am    Post subject: Reply with quote
    

Thanks Rob, that was my thoughts exactly. There's also the possibility of running a second cable if you require one at a later date.

Jonnyboy



Joined: 29 Oct 2004
Posts: 23956
Location: under some rain.
PostPosted: Fri Oct 21, 05 8:44 am    Post subject: Reply with quote
    

We paid the electricity board £1300 quid to run a 185 cable 50m, that cable is about 2 inches thick and totally minimised the volt drop as we were 150m away from the transformer already.

If you are going to lay the cable yourself you need to dust over the top of it and put a caution tape down too so that anyone who digs up afterwards will hit the tape and be warned before hitting the cable.

High Green Farm



Joined: 30 Nov 2004
Posts: 349
Location: Mid-Suffolk
PostPosted: Fri Oct 21, 05 8:58 am    Post subject: Reply with quote
    

Quote:
I would always put a ducting in for electrics & other wires, then you could save on not having to have amoured cable & be flexible to replace it at a later date if necessary. If you also make sure you leave a draw rope in when the cable is in place then you'll easily be able to add additional wires/cables too.

Second hand cable may also be an option? We got some big stuff through ebay a lot cheaper than it would retail new & it was as good as.


We've looked on Ebay for cable, but I think the chances of finding 175m are slim.

Whilst the cost of the cable is related to it being armoured, I'll still need a thick cable to minimise volt drop. I think it highly unlikely that I would be able to pull a minimum of 16mm cable down any ducting, given the layout of the land, with corners and ditches.[/quote]

High Green Farm



Joined: 30 Nov 2004
Posts: 349
Location: Mid-Suffolk
PostPosted: Fri Oct 21, 05 11:08 am    Post subject: Reply with quote
    

Now I have another thought! Do I run twin core and use the sheath for earth or do I run three core and use one of the cores for earth? I think twin core…..but not 100% sure.

Things are never simple!

Jonnyboy



Joined: 29 Oct 2004
Posts: 23956
Location: under some rain.
PostPosted: Fri Oct 21, 05 11:28 am    Post subject: Reply with quote
    

High Green Farm wrote:

I think it highly unlikely that I would be able to pull a minimum of 16mm cable down any ducting, given the layout of the land, with corners and ditches.


The guys installing ours used a winch cable connected to the end and just peeled it off a drum, it took less than five minutes

dougal



Joined: 15 Jan 2005
Posts: 7184
Location: South Kent
PostPosted: Fri Oct 21, 05 11:39 am    Post subject: Reply with quote
    

High Green Farm wrote:
Now I have another thought! Do I run twin core and use the sheath for earth or do I run three core and use one of the cores for earth? I think twin core…..but not 100% sure.


Take expert advice!

My 2p worth:
If your system earths through a "spike" on your property then I can't see the harm in using the shield as the earth conductor, and tying it into that earthing system.
However, that could be a bad idea if your earthing is done at the local sub-station.
https://www.epanorama.net/documents/groundloop/earthing_arrangements.html
Running cable with a dedicated earth conductor couldn't be wrong... its just a matter of whether its required! (Have you got access to "The Regs"?)

Jonnyboy



Joined: 29 Oct 2004
Posts: 23956
Location: under some rain.
PostPosted: Fri Oct 21, 05 11:49 am    Post subject: Reply with quote
    

Having seen my earth spike put in there ain't much to them either.

High Green Farm



Joined: 30 Nov 2004
Posts: 349
Location: Mid-Suffolk
PostPosted: Fri Oct 21, 05 11:56 am    Post subject: Reply with quote
    

dougal wrote:


Take expert advice!

My 2p worth:
If your system earths through a "spike" on your property then I can't see the harm in using the shield as the earth conductor, and tying it into that earthing system.
However, that could be a bad idea if your earthing is done at the local sub-station.
https://www.epanorama.net/documents/groundloop/earthing_arrangements.html
Running cable with a dedicated earth conductor couldn't be wrong... its just a matter of whether its required! (Have you got access to "The Regs"?)


Agreed....need to find good local electrician to do this.

We have a PME, so as you say, I can't go wrong by chucking in 3 core!

Rob R



Joined: 28 Oct 2004
Posts: 31902
Location: York
PostPosted: Fri Oct 21, 05 7:59 pm    Post subject: Reply with quote
    

Jonnyboy wrote:
Having seen my earth spike put in there ain't much to them either.


Two quid from Screwfix

As for ducting it can go under ditches, round corners (provided they aren't too sharp) & with the right duct, the cable will go through OK, as JB says, if its too big to pull by hand just winch it through. It's a lot easier (and cheaper) than digging it up again- you'll never regret putting a ducting down but you can often regret not putitng one in.

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