โOct-09-2019 07:19 PM
โNov-07-2019 05:49 PM
โNov-07-2019 12:23 PM
Dutch_12078 wrote:In CA, General Order 95 (GO-95) states that radial clearances of bare line conductors up to 22.5kV (22,500 volts) from tree branches or foliage is 18" (I'm looking at the GO-95 specs as I type this; Table 1, case 13). Higher voltages are typically Transmission, and are usually on very tall poles/towers, and as such are not normally an issue for tree clearance. As Dutch said, those clearances are based on a formula rather than a fixed number, and are more based on clearances between the lines themselves rather than between the lines and vegetation.
I was told by an Asplundh tree trimming supervisor the standard used by most power companies is 18 feet, not 18 inches. Asplundh is a line clearance contractor that works for many power companies in the US, Canada, Australia, and New Zealand.
โNov-05-2019 04:44 PM
โNov-05-2019 03:04 AM
โNov-04-2019 03:38 PM
โNov-04-2019 01:20 PM
WVcampground wrote:I agree, 18" is not nearly enough. But you also have to remember that CA is inhabited by environmental tree-huggers; they'd prefer that nothing be done to a tree in any way. :S4x4van wrote:
Also, it is State Law that trees are trimmed a minimum of 18" from electric lines.
That's a stupid law, only in California could they have something that.
Here they clear cut the entire right of way easement back to a vertical line, at whatever the edge of the easement is. It's a heck of a lot further than a foot and a half. You can have an 80' white pine on your property with half of it in the easement, and they'll trim the entire one side of it off to a nice plumb straight vertical plane so fast your head will spin.
โNov-01-2019 05:49 AM
4x4van wrote:
Also, it is State Law that trees are trimmed a minimum of 18" from electric lines.
โOct-31-2019 08:52 PM
4x4van wrote:T18skyguy wrote:No offense to you or your BIL, but I highly doubt that. I work for RPU (Riverside Public Utilities), and we have a constant, ongoing tree trimming program that costs us more than $100,000 per month. LADWP's territory is many times larger than Riversides', so they are undoubtedly spending even more. Also, it is State Law that trees are trimmed a minimum of 18" from electric lines.
My brother in law is very high up at the DWP in Los Angeles. He told me those tree trimmers only trim the tree back a few inches from the lines. That keeps them employed because they need to be called again next year to trim again.crawford wrote:50 million dollars wouldn't underground even a half mile of high voltage transmission lines. Just how many miles of overhead lines do you suppose there are in California? 25,000 miles of transmission lines ($150 million PER MILE) and 160,000 miles of distribution lines ($1 to $3 million PER MILE). Do the math: it would cost over $4 TRILLION to bury all of the electric lines in CA.
Just thinking what was said for a extra 50 million isn't worth it after all the the homes that were burnt the the ground not just a few and over the past 5 years or so really makes little sense IMO that is.
โOct-31-2019 05:12 PM
ArchHoagland wrote:
We keep our coach parked next to the house with a full tank of gas.
If power goes out for a long time I can fire up the generator and run an extension cord to the freezer and refrigerator inside our house.
75 gallons of gas would be good for about a week or so.
In the Loma Prieta earthquake we lived in Salinas and had no power for several days. Discovered you can't buy gas when power is off for days so now my vehicles never get below a half tank and my coach is always full when stored by the house.
Having a free standing generator could be a problem without a lot of gas stored at your home.
โOct-30-2019 02:05 PM
T18skyguy wrote:No offense to you or your BIL, but I highly doubt that. I work for RPU (Riverside Public Utilities), and we have a constant, ongoing tree trimming program that costs us more than $100,000 per month. LADWP's territory is many times larger than Riversides', so they are undoubtedly spending even more. Also, it is State Law that trees are trimmed a minimum of 18" from electric lines.
My brother in law is very high up at the DWP in Los Angeles. He told me those tree trimmers only trim the tree back a few inches from the lines. That keeps them employed because they need to be called again next year to trim again.
crawford wrote:50 million dollars wouldn't underground even a half mile of high voltage transmission lines. Just how many miles of overhead lines do you suppose there are in California? 25,000 miles of transmission lines ($150 million PER MILE) and 160,000 miles of distribution lines ($1 to $3 million PER MILE). Do the math: it would cost over $4 TRILLION to bury all of the electric lines in CA.
Just thinking what was said for a extra 50 million isn't worth it after all the the homes that were burnt the the ground not just a few and over the past 5 years or so really makes little sense IMO that is.
โOct-30-2019 08:30 AM
โOct-29-2019 09:15 AM
โOct-29-2019 08:57 AM
โOct-29-2019 08:53 AM
wa8yxm wrote:
Learning more about this every day
IT would be best to properly trim trees and maintain lines.
Or bury the lines
But when PG&E sends out tree trimmers residents send lawyers "THey are ruining our trees" and now that they are turning off power "They are spoiling our food" will be the lawyer's claim.. Sadly I suspect the residents will pitch a complaint if they bury the lines too.. but .. Well..