4 ms·
Isn't it also to keep a pressurized environment in the can and prevent moisture leaking in, resulting in rust? I was reading up on these too recently. Oil is al
by i1856511 9y ago
Isn't it also to keep a pressurized environment in the can and prevent moisture leaking in, resulting in rust? I was reading up on these too recently. Oil is also used in large circuit breakers to extinguish electrical arcs.[1]
[1] https://youtu.be/rDiPKEThLVI?t=7m15s https://youtu.be/rDiPKEThLVI?t=7m15s