Safe distance between the high voltage tower and the residential buildings 4

[h-badawy]

Dear experts

What is the safe distance between the high voltage electricity tower or electricity wires and residential buildings.


Thank you

 

[davidbeach]

It depends, in part, on the governing codes. Where are you?

 

[jraef]

Far enough that if a cable breaks, it cannot hit your house or land in your yard where your kids or pets can come in contact, because that is the only known danger.


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington

 

[davidbeach]

I've seen Google Earth images that suggest that the Europeans don't even require that much distance; it just depends.

 

[itsmoked]

I have a friend who has 69kV lines running over his back yard shade lattice about 10 feet out his back door. Barbeques there creep me out.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[h-badawy]

thanks all

i am worry about Health effects caused by the electromagnetic field (EMF) and concerning about ACI-code in my case i have two towers far from my building about 88 to 100 meter and the wire connected between them far from the building about 30 m , also i think the distance is function in the voltage and i think the electrical system is 400 kv

Thank you

 

[jraef]

There is no known effect, a fact now proven by very reputable and extensive studies. There were a few junk science studies published years ago, debunked many times hence, yet the myth persists because scaremongers have found a way to make money by stirring up fears and reciting these studies without mentioning that they have need disproved.

Anecdotally, I have lived under 250kV power lines for 18 years now and raised two children here for much of their lives with no ill effects on any of us. Many of my neighbors have lived here since the housing development was built in 1970, nobody has reported any effects whatsoever. Yet, whenever a house goes up for sale in this neighborhood, the realtors make the rounds wanting to know who around here got cancer, who suffers from psychological disorders etc etc. They almost seem disappointed in our answers, because I think they are looking for reasons to de-value the properties and sell them faster. So far, they have been out of luck.


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington

 

[bacon4life]

OHSA 1926.1408 Table A requires at least 25 ft (7.6m) at 400 kV for cranes.

https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=19

 

[jghrist]

If you're in the USA, I'd check the NESC (National Electrical Safety Code) for required clearances.

 

[stevenal]

Magnetic field strength is a function of current and distance, not voltage. If you were to measure it, you'll find the fields near your electric oven, dryer, water heater, etc. are much higher.
Link

 

[cranky108]

I would say the house should not be within the easement of the transmission line. Otherwise you may be forced to move your house.

Why did you not look at the transmission line before you bought your house?

If you would feel better, most utilities will bury the line if you are willing to pay for the cost.

 

[LDKGR]

I agree with jraef. In Greece there were many fights with puplic power corporation for the same reason. Nobody wants a transmission line near his house. Now there is a rule of thumb "Don't buy a house if there is a transmission line in a distance of 50m".

 

[bacon4life]

The NESC horizontal distance to 400 kV is about 4.4 m (15 ft). Although the NESC govern the minimum clearance acceptable to a utility, the clearances listed only allow for qualified high voltage electricians within those limits. In order to allow for the safety of regular construction workers to maintain the exterior of the building, using the OSHA distance plus room for scaffolding/ladders is more typical in my area.

 

[cranky108]

I believe there are a bunch of tricks that home builders use to hide things that people find undesirable. And one of the undesirable things are power lines.

Have you seen the extra large backyard, where the home builder dos not build a fence. Power line, or gas line.
Have you seen the stockade fence at the back of a back yard to hide a open storm drain that the buyer dos not know he is buying.

 

[FPelec]

As regards EMF health issues, here in Italy new buildings and new power lines (both overhead lines and underground cables) must fulfill the 3 uT limit on magnetic induction at full rated power, which leads to about 45 m distance between line axis and residential buildings.
If instead you consider the international (ICNIRP) limit of 200 uT, the distance from line axis is almost zero.

Si duri puer ingeni videtur,
preconem facias vel architectum.