telasin's got the right answer. Part of it, at least.
Some breakers have NO CENTER POSITION. They trip to OFF, the trip action opens the contacts and resets the mechanism in one continuous move. This is common on miniature circuit breakers, both residential and commerical.
I worked at a...
I was thinking about wind turbines and suddenly noticed that the big rigs, like the ones utility companies are adopting, are usually higher than anything else around them. Furthermore, the motion of the blades causes friction with the air which could conceivably create static charges. If such is...
What terms do you use in english when an engine (typically diesel) overspeeds out of control? This is typical of big diesel truck and generators, when the injectors fail in such a way that the engine accelarates out of control and the only way to shut it down is by cutting the fuel supply. I...
To expand.
GF protectors are available in various models. By GFI one usually means a device for personnel protection. Like stevenal says, these devices trip under grounded neutral conditions (even if there is no load), as well as grounded hot line. The reason for this is that people could...
