Today's Job

craneguy1 said:
Around here (n.e. ohio) a power kill on primaries doesn't exist. Paulin i would like to know who you work for. pm if you prefer.
Click to expand...

You don't EVER get a power shut off around here either but you might get a rubber sleeve job. I cleared lines all rope and saddle for 3 full years in Raritan Township NJ by myself after 3 Mile Island Nuclear Reactor incident as electric clearance crews were shut down. Keep your clearances and you will do ok.
 
Reilman said:
I have a question about electric lines that are post transformer and running to service drops. I've been working around them a lot lately. 2 or 3 wide bare copper, tree limbs touching em, and I'm in a spider lift. I'll just chop suey little stuff with my top handle, making sure I don't land a piece that connects two lines. I'll avoid direct contact of wires with my boom and myself.

What's the risk with these post transformer, exposed copper lines?
Click to expand...

Those copper lines are open wire secondaries (120/240 volt stuff most likely). Once upon a time, there was probably a covering over them, but it wears off with time. That's old school construction, and is usually replaced with the triplex (two black conductors wrapped around a bare neutral conductor) that you are probably more familiar with.

In many ways, secondary conductors are just as dangerous than the higher voltage primaries. People feel safer around them because of the lower voltage and the protective covering on the wires ... the minimum approach distance for secondary wires under 1000 volts is to simply avoid contact, so people just get right up there next to them and think "well, as long as I don't touch it, I'm fine". While that is true, the closer you are, the more likely it is that you'll come into contact with the wires. Don't let the protective covering fool you ... it's not there for insulation purposes, it's there to protect the conductors from abrasion. The bare neutral can also carry current and voltages high enough to kill, especially under unbalanced loading conditions.

Without getting into things too deep ... yes, the voltage on secondary conductors is low, but there is still a lot of fault current potential on secondary wires. You risk serious injury/death by touching them.
 
I had a silver maple removal all up in 3 phase lines so I told the HO I'd call national grid. She beat me to the punch and got a hold of them for me and called me when they cleared the lines.
I was expecting them to do the least amount of work possible but low and behold when I got to the job they cut literally half the tree for me. A half day job went down to a little more than an hour. All at no cost. I wonder if they respond better to homeowners than tree guys?
 
d49bd3d6180903c9a9df4b01d23b833a.jpg
18ea6fd2b975ba8ef45619a3baaf7c85.jpg
a09cf31bc8268ca2f7aa7add77fbdbc8.jpg
e81731b15ee378c3715ff12f68cf55fc.jpg
8ce0b5e60087b9591cef10146d90945a.jpg

Large black walnut removal we did from September
 
Looks good Deevo. One comment you probably know already but I have to; Be careful of the sling riding on the pin of the shackle on the second picture. Even if you know that already it's probably good to point out for someone else that might not. Thanks for the pics!
 
MARK_CHISHOLM said:
Looks good Deevo. One comment you probably know already but I have to; Be careful of the sling riding on the pin of the shackle on the second picture. Even if you know that already it's probably good to point out for someone else that might not. Thanks for the pics!
Click to expand...
yeah thanks Mark, the crane op tensioned it up before i set it and rolled a bit, he thought after i did the spider legs i was done and he put some tension on it which did that! good eye! I knew someone was gonna point that out! That pick was light, only 850.
 
deevo said:
yeah thanks Mark, the crane op tensioned it up before i set it and rolled a bit, he thought after i did the spider legs i was done and he put some tension on it which did that! good eye! I knew someone was gonna point that out! That pick was light, only 850.
Click to expand...
that is a stand-up 35ton grove right there. stout as hell looks about 1980 vintage.
 
You are almost dead on! 1979! My crane guy has 5 cranes and they pretty much restored the old girl last year! Funny seeing all the controls in there compared to all his newer cranes ! All his others are 2010 and up! None the less it's a great crane and can set it up in right spaces!



Sent from my iPhone using Tapatalk
 
Here's one from last wedneday, a part time tree company rented our crane to help him remove this backyard EAB ash tree. I'm running the crane he's climbing, the home owner was running the drone and also had 2 gopros setup. The last pick came off a little cockeyed because the original plan was to cut it at the height of the deck floor, then the HO decided he wanted to make a table out of it.


 
classictruckman said:
Here's one from last wedneday, a part time tree company rented our crane to help him remove this backyard EAB ash tree. I'm running the crane he's climbing, the home owner was running the drone and also had 2 gopros setup. The last pick came off a little cockeyed because the original plan was to cut it at the height of the deck floor, then the HO decided he wanted to make a table out of it.


Click to expand...
Nice! Made quick work of that, nice to see the above drone video and ground level video!
 
You must log in or register to reply here.

New threads New posts

Back
Top Bottom