I found an old lightning arrester outside in a pile of old junk wire from the previous building that was here. It looked just like this, I wish I took a picture before I smashed it with a hammer. I think it may have been this exact one, or at least the same brand.
Here's what's inside, my question is this, how can three wires, sunk into what looks like a ceramic plate, stop lightning?
The three bare wires came out of the top to be connected to the protected device, and the wires with the "crimp" looking things were just embedded inside of that ceramic material.
To me, it looks like three wires separated by about a half inch of ceramic.
If anybody could explain how one of these works, I would be very grateful, I can't seem to get a satisfactory answer on any other site.
I recently installed a Siemens FS140 SPD, and that thing is quite a device, it has microcontrollers and all types of things. This little screw in doohickey has none of those, not even a single component. Maybe I'm just completely missing something, but I don't understand how that would arrest a lightning strike in any way.
Here's what's inside, my question is this, how can three wires, sunk into what looks like a ceramic plate, stop lightning?
The three bare wires came out of the top to be connected to the protected device, and the wires with the "crimp" looking things were just embedded inside of that ceramic material.
To me, it looks like three wires separated by about a half inch of ceramic.
If anybody could explain how one of these works, I would be very grateful, I can't seem to get a satisfactory answer on any other site.
I recently installed a Siemens FS140 SPD, and that thing is quite a device, it has microcontrollers and all types of things. This little screw in doohickey has none of those, not even a single component. Maybe I'm just completely missing something, but I don't understand how that would arrest a lightning strike in any way.
