Discuss Overhead property supply clearance requirements in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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Hi, we have a single phase overhead supply to our property, and are constructing a garage with a corner near the center of the ~15m span. What is the minimum separation to the structure? Is it possible to secure the cable at the midway point on the new structure?

Thanks!
 
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ashrow

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Arms
The best thing you should do is contact the company that maintains the over head cables
If they are bare conductors they may need to provide an insulation/cover to these prior to you commencing the works (this should be free)
 
The cable is fully insulated if that helps...
Depending on the age of the supply it could be paper insulated with red lead jute binding or hard drawn VIR, both by now will be knackered and dangerous. I wouldn’t touch ether with a barge pole.

Get in touch with your DNO.
 

snowhead

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Mentor
Does this cable only supply your property or does it go on to supply another one?

You need to speak to the D.N.O / cable owner, they will assess whether they need to fit extra protection or even divert the cable before work starts.
And then to advise what further work is required.

I would speak to them immediately as I wouldn't be surprised if they have the legal right to stop you working adjacent to it.
 
Re DNO requirements: When workmen on a roof, they must not be able to touch the O/H cables. I think the guide line is, plus 1 meter further than average persons out stretched arm.
There are other issues also. DNO guy will discuss with you. Are the existing O/H cables old ?
If so DNO may alter / replace FOC
Do they feed other properties ie neighbour?
Would it be possible to go underground? You dig reinstate trench, DNO do the electrical connections, to keep any costs down.
 

Megawatt

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Arms
Re DNO requirements: When workmen on a roof, they must not be able to touch the O/H cables. I think the guide line is, plus 1 meter further than average persons out stretched arm.
There are other issues also. DNO guy will discuss with you. Are the existing O/H cables old ?
If so DNO may alter / replace FOC
Do they feed other properties ie neighbour?
Would it be possible to go underground? You dig reinstate trench, DNO do the electrical connections, to keep any costs down.
Driver man the guideline is 28 meters
 

Megawatt

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Arms
Driverman I was try to tell you 8 foot clearance but be like y’all and do it in meters and I can tell you I must have layed out of school that day because I don’t know the metric system and I don’t know y’alls clearances hell if I could go a day without Dave getting mad at me I wouldn’t know what to do anyway the clearances in the USA 8 feet
 
Driverman I was try to tell you 8 foot clearance but be like y’all and do it in meters and I can tell you I must have layed out of school that day because I don’t know the metric system and I don’t know y’alls clearances hell if I could go a day without Dave getting mad at me I wouldn’t know what to do anyway the clearances in the USA 8 feet
Hey, no worries
 
Your local PoCo and AHJ will give guidance on this matter.

If the AHJ inspector “red tags” the install you’re in for a rough ride.

This side of the pond we would refer to it as an improvement order. I’ve only seen one instance of an improvement order being issued, it wasn’t pleasant.

Remember, BS7671 is a code of practice, NFPA-NEC is statute law.
 

Megawatt

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Arms
Your local PoCo and AHJ will give guidance on this matter.

If the AHJ inspector “red tags” the install you’re in for a rough ride.

This side of the pond we would refer to it as an improvement order. I’ve only seen one instance of an improvement order being issued, it wasn’t pleasant.

Remember, BS7671 is a code of practice, NFPA-NEC is statute law.
Carl that is so right in the USA, I just found out yesterday that an electrical company had done a job and still didn’t get the problem fixed so they called me and I found the problem in 15 minutes and it was an earthing problem. It burnt up there TV, refrigerator, microwave etc. they didn’t even draw a permit and changed a panel that wasn’t the problem and charged them $ 1100.00. I told the customer to call code enforcement and turn them in. Got a call from the customer yesterday and told me they found him guilty, fined him $ 1000 and suspended their license for 1 year. In America they don’t play if you don’t follow their guidelines and rules.
 
For those who don’t know, AHJ = Authority Having Jurisdiction = building control with teeth. Something we should have on this side of the pond. A red tag means the installation can’t be made live.
 

Dan

Admin
Steady on lads. :)
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Carl that is so right in the USA, I just found out yesterday that an electrical company had done a job and still didn’t get the problem fixed so they called me and I found the problem in 15 minutes and it was an earthing problem. It burnt up there TV, refrigerator, microwave etc. they didn’t even draw a permit and changed a panel that wasn’t the problem and charged them $ 1100.00. I told the customer to call code enforcement and turn them in. Got a call from the customer yesterday and told me they found him guilty, fined him $ 1000 and suspended their license for 1 year. In America they don’t play if you don’t follow their guidelines and rules.
Did they get their money back too or not?
 
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Megawatt

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Arms
Steady on lads. :)
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Did they get their money back too or not?
Dan no they didn’t get their Money back because the lady of the house canceled the check before they had a chance to cash it. I kind of felt bad about that company loosing their license for a year but follow the guidelines set by the NEC and NFPA and you will stay out of trouble.
 

telectrix

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Mentor
Arms
Esteemed
Driverman I was try to tell you 8 foot clearance but be like y’all and do it in meters and I can tell you I must have layed out of school that day because I don’t know the metric system and I don’t know y’alls clearances hell if I could go a day without Dave getting mad at me I wouldn’t know what to do anyway the clearances in the USA 8 feet
we all think in feet and inches but have to work in metres/millimeters, (except the under 30's who don't know any better). it's better for you as everyone there uses feet and inches.
 

Megawatt

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Arms
Steady on lads. :)
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Did they get their money back too or not?
we all think in feet and inches but have to work in metres/millimeters, (except the under 30's who don't know any better). it's better for you as everyone there uses feet and inches.
Telectrix I know that there is 25.4 mm to 1 inch and that’s it. I’m 61 so it’s to late for me to get into metrics
 

telectrix

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Mentor
Arms
Esteemed
y'all over there stand up for your beliefs. over here, EU says "jump" and our pathetic clowns of a government say "how high?".that's why we voted for brexit. sooner we get out the better. let them get on with their frogs legs and worst. long live the Confederacy. ( oops.hope Carolina wasn't a yankee state. :):):)
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Telectrix I know that there is 25.4 mm to 1 inch and that’s it. I’m 61 so it’s to late for me to get into metrics
me too. just can't visualise xxx mm. have to use a dual standard tape measure. we have a buiding reg. forheight of sockets and switches ( for new builds), 450mm to 1200 mm from floor. to my mind that's 18" to 42".if no tape measure handy, then it's knees to tits. that's for a standard, non-metric electrician @ 5' 8".a tall guy would be inaccurate.
 
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Megawatt

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Arms
y'all over there stand up for your beliefs. over here, EU says "jump" and our pathetic clowns of a government say "how high?".that's why we voted for brexit. sooner we get out the better. let them get on with their frogs legs and worst. long live the Confederacy. ( oops.hope Carolina wasn't a yankee state. :):):)
Post automatically merged:


me too. just can't visualise xxx mm. have to use a dual standard tape measure. we have a buiding reg. forheight of sockets and switches ( for new builds), 450mm to 1200 mm from floor. to my mind that's 18" to 42".if no tape measure handy, then it's knees to tits. that's for a standard, non-metric electrician @ 5' 8".a tall guy would be inaccurate.
Hell telectrix pack up and come on over here but we are no where even perfect we have our problems but in the UK y’all don’t stand a chance all the power company’s then the meter company who you pay your bill to when y’all go out it appears to me that they paperwork y’all till you feel like throwing up. I do like our situation I draw a permit go put the job in call in for a final inspection he comes stays maybe 2 hours checking then puts a sticker on the cover off the meter he even calls the power company and I’m done
Post automatically merged:

y'all over there stand up for your beliefs. over here, EU says "jump" and our pathetic clowns of a government say "how high?".that's why we voted for brexit. sooner we get out the better. let them get on with their frogs legs and worst. long live the Confederacy. ( oops.hope Carolina wasn't a yankee state. :):):)
Post automatically merged:


me too. just can't visualise xxx mm. have to use a dual standard tape measure. we have a buiding reg. forheight of sockets and switches ( for new builds), 450mm to 1200 mm from floor. to my mind that's 18" to 42".if no tape measure handy, then it's knees to tits. that's for a standard, non-metric electrician @ 5' 8".a tall guy would be inaccurate.
I get so lost when y’all speak in mm wire size I don’t have a clue what y’all are talking about
 
I'm looking forward to the UK going back to pounds, shillings and pence ! (20 shillings to the pound and 12 pence to the shilling... for those that didn't know). We'll need to arrange counselling for all the youngsters ! Some can barely cope with the decimal system !
 
I'm even more confused now.
I retired early due to ill health. I had to find something to do, other countries wiring methods interested me.

I can state quite categorically that BS7671 comes 2nd in the male bovine excrement race!
 

Megawatt

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Arms
I retired early due to ill health. I had to find something to do, other countries wiring methods interested me.

I can state quite categorically that BS7671 comes 2nd in the male bovine excrement race!
Carl I also are in the same situation as you are and that’s why I joined this forum. I love it and it helps to keep my mind sharp, and please don’t let some of the reply’s bother you but beware they will test you. LOL welcome to the forum
 

Megawatt

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Arms
I retired early due to ill health. I had to find something to do, other countries wiring methods interested me.

I can state quite categorically that BS7671 comes 2nd in the male bovine excrement race!
Carl if you don’t mind what’s wrong with your health ?
 

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