When a phase line touches the neutral by any conducting material means the Short Circuit. If there is a short circuit then the current in that circuit will be much higher and this increase in current may damage the the devices that are connected to that line.
Two phase-wires or lines of a three-phase supply provide a single-phase supply with a voltage 73% more than the line-to-neutral voltage. With a 240 v house supply as used in the UK for example, the 240 v is between one line and neutral, and the voltage between lines is 415 v. Connecting this will cause the bulb to be unusually bright but it would last only a short time.
If the "hot" wire comes into contact with the neutral wire it will cause, what is known in the trade, as a short circuit. A high capacity of current will be drawn and the protective circuit breaker will trip.
With luck it will blow the fuse and cut off the power . . . if that does not happen there is a possibility of a fire.
no use laying an earthing strip in a cable tray better tap both the ends of the earthing wire to the trunking,it will save your wire also,or lay out a cable in the other trunking where you have low voltage wire running in.
An earthing boss and earthing lug are parts of a grounding connection. An earthing boss is in a casting that allows for the drilling and tapping of hole. A earthing lug is used to bond a wire to the ground.
Generally if two phases are overlapped high voltage appears across the load . . . Before tht the generally a three phase 4 wire exists at outgoing of transformer hence at house hold applications the service mains trips . . .AnswerI think you mean. 'What happens when two line conductors touch each other?' The answer is that there will be a short-circuit, which will cause the protection system to disconnect the circuit.
NO! The voltages available in the 3-phase system are 480 (if you wire phase to phase) and 277 (if you wire phase to neutral) Don't try it!
The same as 'grounding' , putting a wire or metal stake into the ground so something attached to it has the same electrical potential
Yes
The earthing wire does not normally carry current.
Only if you are grounded and provide a return path for the current to travel.
GREEN
no use laying an earthing strip in a cable tray better tap both the ends of the earthing wire to the trunking,it will save your wire also,or lay out a cable in the other trunking where you have low voltage wire running in.
An earthing boss and earthing lug are parts of a grounding connection. An earthing boss is in a casting that allows for the drilling and tapping of hole. A earthing lug is used to bond a wire to the ground.
That would be a ground-fault if it occurs anywhere other than inside the service panel.
nothing happens if the thing attached to it is not turned on, you get electrified if it is on
Making a load On, By using a clamp meter for measuring the current in the wires : we find a reading in Amps. if we clamp the neutral wire. and zero when clamping the earthing wire.
earth wire not cnnected from main earth
A thick earthing wire, or a wide, flat conductor, is preferred, because it's more important to minimize henrys (inductance) in the earthing system than to reduce ohms (resistance). For the same reason, corners and small angles in an earthing conductor should be avoided, and the conductor should approach any connections from a parallel direction.
If a "hot" wire contacts the "neutral" or ground wire, electrical current flows to the ground.