415v air circuit breaker acceptable value of 0.01 ohms and lessthan
400mega ohms acceptable....
30 micro ohms
This is a small electromagnet whose coil is in series with the relay contacts and whose contact is in parallel with them. The electromagnet is energized, closing its contacts in parallel with the relay contact as soon as the trip coil is energized, and drops out when the circuit breaker opens.
The Star-Delta control circuit diagram shows the delta contact and the main contact.
An open circuit has a break in it somewhere, so the circuit is not complete and electricity cannot flow. When you power off a light, for example, with an on/off switch, you open the circuit, turning off the light as desired. When there is an unwanted open circuit, for example from a damaged wire, the device or system is unpowered and cannot operate. A short circuit has some unwanted contact between points at different voltage levels, such as from hot to neutral or ground, or between positive and negative. When a short is in a circuit, electricity will take only that path of little or no resistance. The rest of the system is deprived of power, and the conductors feeding the point of the short will likely overheat or burn unless a fuse or breaker operates, creating now an open circuit.
A low voltage (less than 1000 VAC) circuit breaker for 15 A typically has a contact resistance of 0.01 Ohm or less.
You need to be more specific. Do you want a contact telling you if a circuit breaker is on? If that is your question, the answer depends on the model of the breaker.
GFI is a mini circuit breaker that responds to shorts or contact with water
the circuit breaker spark when it comes an over load, loss contact,but the probable cause is loss contact...and also the circuit breaker is going to be damage or destroyed.
In a vacuum breaker the moving contact and fixed contact are sealed inside a vacuum chamber. Electrons cannot flow in a vacuum, therefore as soon as the moving contact seperates from the fixed contact the arc meets an infinite resistance and is immediately extinguished. Because of this, the gap between the fixed and moving contacts when the breaker is open need only be a tiny amount.
400mega ohms acceptable....
30 micro ohms
The neutral is in contact with the ground at some point of the circuit.
132kv MOCB acceptable value of somthing 150 micro ohms.
Breaking Current: The r.m.s value of short circuit current at the instant of contact separation.
The Circuit Breaker on a 1995 Jaguar XJR is located under the firewall in place of the blue hydro chronic area that is in between the legs of the upsidedown woman that fell on to her knees when the location of the firewall was found to make contact with the engine at 3.2 seconds then became the location of the circuit breaker of the 1995 Jaguar XJR. Your Welcome.
the hot wire in the circuit has come in contact with a ground ------------------------------------------------------------------------------- not true, if a circuit is grounded properly the outside ( as in the outside of a drier ) is connected to the ground to prevent shocks . it gives electricity a route to go that is away from you. <<>> The first answer is correct, because the circuit is grounded. The second answer refers to equipment grounding for safety reasons. <<>> The first answer is a short circuit which will blow a fuse or trip a circuit breaker. If a circuit is grounded in AC it's for saftey like the second answer, in DC it's the route the electricity takes back to the battery from the circuit.