:thumbsup:
All this because the OP couldn't distinguish between the shunt trip coil in a circuit breaker or disconnect switch and the button that operated it.
At least I haven't seen anyone suggest we go to Wiki for an official opinion.
I like you response you don't have a clue to what your talking about .
Yes we know what a shunt trip BUTTON is ! Theirs a big difference between a SHUNT BUTTON and a shunt breaker. We install them on every building or project we do its building fire code. My question was on a SERVICE and if you read the post they changed it to a elevator which has nothing to do with my original question so go back and read the first post. I wanted to know if it was in the NEC code that's why I came to Mike Holts .
A elevator is controlled by a heat detector in shaft if it detects heat it flat out trips the breaker controlling the elevator and it stops period . That's what happens in our state and its inspected by the state elevator inspector on every job.
A service is controlled by a shunt trip mushroom button.
Mounted in a N3R glass box a tiny metal hammer is used to break the glass that covers the button . When you need to shut power off this is for the fire dept they smash the glass it sends 120v or 24 volts to shunt coil on main breaker . So they don't get electrocuted when they put out the fire inside building . Its mounted at 7 ft because that's a building code in our state or city. You don't fight a fire with electric on.
We even shunt trip generators but that button is mounted on the outside on generator itself.
So question was totally different then answers there was only one guy who actually answered my question .
