scott wrote:
>> But trees encroach on power lines all the time.  I can look out my 
>> window and see half a dozen...
> 
> You have one of these outside your window? o_O
> 
> http://www.idonohoe.com/biking/gallery/pylon.jpg

Ah, no, although I know of some within a few miles of here.

No, I mean the stuff that runs down your street and branches to every house.

> If you mean the low voltage cables on wooden poles that are much closer 
> to the ground, then maybe those ones are insulated (we don't have many 
> of those here, the cables mostly go underground once they come off the 
> pylons)?  They don't have to go long distances so the extra cost is 
> probably justified by the high risk of stuff hitting them.

OK, so the local stuff is probably insulated due to risk, while the high 
voltage stuff used for long-distance transmission is left uninsulated. 
That makes sense.

...Chambers

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