Hello,

We live in a telephone house built in 1958, with a basement. Located in Uppsala. Now we are going to build a greenhouse and place footings about 80 cm deep. Unfortunately, the power line from the street to the house runs right where the greenhouse is to be placed. A stretch of 13 meters from the street to the house.

From the old drawings I have retrieved, it shows that the line runs here, but it is so imprecise that it is not possible to know anything other than +/- several meters.

Is there anyone knowledgeable here on the forum who knows what to expect:
- How deep does the power line usually run approximately?
- What does it look like, how thick, type, is there normally gravel around it.
Simply building code from that time....

Grateful for any answers.
 
BirgitS
Welcome to the forum!

Ledningskollen is a good start: https://www.ledningskollen.se/
There are other things than electrical cables in the ground.

When you see how it looks when they dig up the streets, it seems there might be electrical cables about half a meter down, but on private property, it can probably vary a lot.
 
If the cable is before your electricity meter, then use ledningskollen. Those who measured for us managed to find the cable very precisely whether it was 70 or 90cm down. (it was different with the telephone line which they managed to mark out 40cm wrong when it was at a 40cm depth)
 
You cannot expect anything if you don't bring someone in to mark out the line on site.

I was going to bury a hose for water and electricity through the driveway, knowing that the fiber was laid along the same path, so I hand-dug. I knew there were shortcuts taken during the fiber installation, but it was quite extreme in certain places, too close to the ground surface by several decimeters in some spots, and the tape that should lie a few decimeters above the fiber to warn so it doesn't get cut was at worst 2cm above the fiber.

I also found the electrical line to the house; the protection for it was about 40cm deep. The cable is probably buried a few decimeters deeper but likely not at 1m as an installer said they aimed for.
 
You do a staking, nothing strange and simple. Then you know exactly where the power cable is.
 
Mattias Andreasson Mattias Andreasson said:
You can't expect anything if you don't bring someone in to mark out the line on-site.

I was supposed to dig a trench for water and electricity through the driveway, knew that the fiber was laid along the same path, so I dug by hand.
I knew shortcuts were taken with fiber installations, but it was pretty extreme in some places, too close to the surface by several decimeters in some places, and the warning tape that should be placed some decimeters above the fiber to prevent cutting was at worst only 2cm above the fiber.

Also found the electrical line to the house, the protection for it was at about 40cm depth, the cable is probably a bit deeper but likely not at 1m as an installer said they aimed for.
You at least got a tape, my fiber is 20-40cm down, without tape, and not where they said it should be...
 
Thank you so much for all the valuable answers! We will definitely order the staking of the cable.

Attached is the old drawing I have of how the cable runs (right under where we are going to dig). Is it possible to interpret anything from these numbers, type of cable / depth, etc?
 
  • Old schematic showing cable layout and measurements, including numbers and technical specifications for cable type and position related to excavation.
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