pjost 
Felt like breaking stuff today, so I am tackling my pile of HV arrestors.
On the ends is a nut, usually stainless. This one wasn'tthen a stainless wire clamp, holding a nice chunk of copper.
The next nut is usually a nice hunk of yellow brass.
The other end has a plastic cap that just pops off. Then a stainless nut (usually) another clamp, an hopefully another chunk of copper.
The fun part: whack with BFH. Wear safety glasses obviously, and a breathing mask. Last time I busted up a bunch of porcelain I had a bloody nose for 2 hours.
Inside is AL or steel Tubes, a spring, maybe ceramic or lead stuff, some AL, stainless, or tin disks and if you are lucky some brass contacts and a little bag like you find in your bag of beef jerky.
If someone who knows more about these could chime in, id like to know if those big disks inside are lead.
Idk if I'm making any money breaking these down, some days it's just fun to break stuff.
Just thought somebody out there might be curious as to what's inside the stuff you see hanging off the power poles.
Bookmarks