LandcruiserLad
Member
Required electricity cable +
Fibre cable +
.. 2 extra ducts for future proofing? Of a similar size?
..sorry lost me a little at the end..
Cheers
Thickness of new underground cable?
- Thread starter LandcruiserLad
- Start date
Required electricity cable +
Fibre cable +
.. 2 extra ducts for future proofing? Of a similar size?
..sorry lost me a little at the end..
Cheers
Copper ethernet is limited to around 100m, fibre will easily do several km and has the advantage of not being susceptible to lightning. Armored fibre suitable for directly burying will cost around £1/m, non armored will be less than half that but will need to be run in a duct. 4in duct in 6m lengths (the purple stuff you see on motorways) costs around £1.50 per metre.
renewablejohn
Member
- Location
- lancs
Really need 3 additional ducts for future proofing so that you can run 3 phase with 1 phase per duct with the original duct then becoming the service duct.
Robigus
Member
The answer is definitely to put conduit in to future proof it.
I can't advise on cable sizes but as for technique we have a 14 Megawatt generator going in and they are laying three phase cables two miles to another substation.
They are 300mm2 armoured cables and there are only three of them as they use the armoured layer as the earth.
All three cables are pulled into a single 200 (250?) millimetre conduit.
They pull all three cables together in 1,000m sections using a good winch and plenty of grease.
They've laid 30 tonnes of this stuff. The second conduit is for fiberoptics.
Last edited:
Can't remember, and I don't have the documents to hand.
i dont think (though very likely to be wrong) you can go theat far on Ethernet cable - i installed some CAT6 and was allegedly on the limit at 100 metres?
Would need to go for fibre of line of sight etc
For the power cable, you dont need an earth conductor - you should not be "exporting" your earth that far.
If you do, when you connect it, you will notice a very small spark, this is because the earths potential differs slightly in different places (thats how it was explained to me)
You should install a ground spike for your earth at the point of use.
Would need to go for fibre of line of sight etc
For the power cable, you dont need an earth conductor - you should not be "exporting" your earth that far.
If you do, when you connect it, you will notice a very small spark, this is because the earths potential differs slightly in different places (thats how it was explained to me)
You should install a ground spike for your earth at the point of use.
- Location
- Boroughbridge, york
not sure why sparkies put an earth in with mine then, and earthed the smaller cable that ran on further from the first broiler shed to the new shed.
earth spike is located at the source of the main cable where the meter and backup genny are located
earth spike is located at the source of the main cable where the meter and backup genny are located
simon-0116
Member
- Location
- Sheffield
Old earwig
Member
- Location
- North o' the border
I have done this and the duct was in 25m lengths with a string in it so we fixed it in one bit at a time and pulled a much stronger rope then that was used for the main cable. Do not try putting light cable in with the big one as it just gets buggered by twisting! Better running another small duct.