Proximity to overhead lines?

[kerv]

I've been asked to install some lighting around an outside menage (horse paddock thing). The client wants metal halide floods on top of scaffold poles. The problem is the supply to the house and small industrial units next door run right across the middle of the menage on telegraph poles (33kv?) Apart from the obvious dangers with waving scaffold poles around under the lines how close to the lines can I put the fittings?

 

[johnboy6083]

Nowhere near. Keep well away.

 

[kerv]

Cheers JB, anyone be more specific? Next field? Next county? :wink5:

 

[UNG]

Try this document should possibly give you the info you need

 

[grantr37]

wouldn't go near, also a risk to the land occupants, unless it is a big metal workshop or a waste handling plant I don't think it will be 33Kv.....a photo of the lines would let me know by seeing, still wouldn't go near.....
I have been at housing schemes before with 172Kv and 300Kv lines going over about 20 feet above the roof ridge, which is not right to have that going over occupied land....there was kids swings set up in the middle of the pylon bases which in my opinion encourages climbing....
some other places I have been have had 11Kv Transformers at chest height you could lean over and touch.....not good either....

 

[kerv]

Thanks for the responses folks. Western Power are sending someone out for a site survey as no one seems to be able to give me any guidance over the phone.

 

[Knobhead]

wouldn't go near, also a risk to the land occupants, unless it is a big metal workshop or a waste handling plant I don't think it will be 33Kv.....a photo of the lines would let me know by seeing, still wouldn't go near.....
I have been at housing schemes before with 172Kv and 300Kv lines going over about 20 feet above the roof ridge, which is not right to have that going over occupied land....there was kids swings set up in the middle of the pylon bases which in my opinion encourages climbing....
some other places I have been have had 11Kv Transformers at chest height you could lean over and touch.....not good either....

I know things can be a bit weird north of the border. Didn't realise the distribution was different as well. 11, 33, 132 275 and 400 are normal voltages. As for the transformers, got any pictures? They would be interesting to see.

 

[Engineer54]

Don't forget the 66KV lines!! lol!!

 

[JD6400]

We unfortunately had to have Western Power out only yesterday to remedy a problem one of our lads had on site uhoh2::bigcry::sick: !), and while they were there i got chatting with the jointing team while we waited for the lines men to get there as well , about overhead supplies and they said that they are told (This is only their area though !) that if the wires are horizontal on the poles it means they are HV but and if they go vertically up the pole it means they are LV .

 

[Engineer54]

We unfortunately had to have Western Power out only yesterday to remedie a problem one of our lads had on site uhoh2::bigcry::sick: !), and while they were there i got chatting with the jointing team while we waited for the lines men to get there as well , about overhead supplies and they said that they are told (This is only their area though !) that if the wires are horizontal on the poles it means they are HV but and if they go vertical up the pole it means they are LV .

That's been the rule since time in memorial!! Not just in your area, or even just in the UK. If suspended on a single pole, on a single rail, HV horizontally, LV vertically!!

 

[kerv]

Horizontal. I hope the photos have appeared, not tried this from my mobile before.

 

[kerv]

Well that wasn't too bad, the photo's are there, just wrong way round! :dozey:

 

[Knobhead]

We unfortunately had to have Western Power out only yesterday to remedy a problem one of our lads had on site uhoh2::bigcry::sick: !), and while they were there i got chatting with the jointing team while we waited for the lines men to get there as well , about overhead supplies and they said that they are told (This is only their area though !) that if the wires are horizontal on the poles it means they are HV but and if they go vertically up the pole it means they are LV .

Clean you're ears out and ask again. You, dear boy, are talking compete and utter bo££ox

 

[AndyOz]

Tony is right.

 

[Silly Sausage]

Does this mean that the author of post number 10 is wrong?!

 

[JD6400]

Clean you're ears out and ask again. You, dear boy, are talking compete and utter bo££ox

Which part ?
One of them did say that just down the road it goes from horizontal to vertical and then back to horizontal on the same run within a couple of miles , but the others said that as we were on the boarder line of their patch it was not a line they knew and he was talking Bo!!ockz anyway !:lol: ( They all seemed rather jolly in their approach to each other and were actually quite amusing when they got going !)

 

[Geordie Spark]

Does this mean that the author of post number 10 is wrong?!

 

[Engineer54]

Does this mean that the author of post number 10 is wrong?!

Anyone care to post any photo's of DNO vertically hung MV/HV distribution lines on single poles?? lol!!

The only overhead vertically hung HV system distributions are on network pylons. There are reasons why they are horizontally hung on single pole installations too, and it's not just for recognition between MV/HV -LV either!! ..lol!!

 

[Knobhead]

Next time you're in the UK have a trip to Mansfield. Go in on the Sutton road. Look to you're right and........... You and I know there's never fixed rules. On LV, is neutral always at the top? Some locations have special requirements / dispensation due to environmental conditions that rule that situation out. Sorry for the long paragraph, new laptop and "Enter" won't give a line break on this forum.

 

[Knobhead]

Role on Monday and I get rid of this damn laptop for an older one that doesn't need Widows 8 to work.

 

[garrywatters]

Role on Monday and I get rid of this damn laptop for an older one that doesn't need Widows 8 to work.

Get a mac Tony.

 

[Knobhead]

I've got a raincoat, that would be better than this bloody thing.

 

[Engineer54]

Next time you're in the UK have a trip to Mansfield. Go in on the Sutton road. Look to you're right and........... You and I know there's never fixed rules. On LV, is neutral always at the top? Some locations have special requirements / dispensation due to environmental conditions that rule that situation out. Sorry for the long paragraph, new laptop and "Enter" won't give a line break on this forum.

Dispensations i can accept, as you say these things always crop up. But generally MV overhead sub-distribution lines will be run in a horizontal order!! As for overhead LV, the neutral is generally at the bottom, rather than at the top. Especially in the case when street lighting is taken directly from the overhead lines, via an extra timed phase lighting line, and using the common neutral!!


Question, ....Do they still allow MV and LV overhead lines to be run on the same wooden poles?? I did hear they were phasing this out, and that no new installations of this type were being installed.

 

[UKMeterman]

I know of a few places in Oxfordshire where there is some MV that is vertical, makes it easier to turn a sharp bend

 

[Knobhead]

There were a few places in the Peak District where MV & LV shared the same pole. Don't know if they're still there. The mention of another set of poles would have the Peak Park Planning Board throwing a hissy fit. I wanted an 11KV OH line put in. Gave up and installed a DG set, it was easier.

 

[Knobhead]

We had to hide the DG set in an old water mill. Anything you wanted to do you had the PPPB on you're back. Painting you're windows could land you in court. And did!

 

[Engineer54]

There were a few places in the Peak District where MV & LV shared the same pole. Don't know if they're still there. The mention of another set of poles would have the Peak Park Planning Board throwing a hissy fit. I wanted an 11KV OH line put in. Gave up and installed a DG set, it was easier.

Quite common to see this in Cyprus, (more so in the rural areas) and a good few other countries too. It can get a bit congested where pole transformers come in to play, especially when there is also an under ground MV SWA cable coming up the pole to feed another overhead string some distance away!! lol!!

 

[Knobhead]

From what I saw in north Africa, they could get anything up a pole. Except me! I'm just mad, not suicidal!