Table of Contents
What happens when two Hotwires touch?
A short circuit happens when a “hot” wire (black) touches another hot wire or touches a “neutral” wire (white) in one of your outlets. When these two wires touch, a large amount of current flows, creating more heat than the circuit can handle, so it shuts off.
What happens when you touch 2 phases together?
If two phase wires touch each other it is considered as a fault, the great Line to Line fault . This causes huge current to flow. If the circuit breaker is operative it will trip if it doesn’t there will be huge heat causing fire or melting of the wire.
What happens if you wire two circuits together?
With two wires connected to the same breaker or terminal, the circuit breaker could overheat. If the two wires are not fastened tightly enough, this could result in arcing. A fire may also occur if your circuit breaker is double tapped. You may be able to view for yourself whether your circuit breaker is double tapped.
What happens if you connect two positive wires?
If two positive wires (referenced to the same common potential) touch then current will flow from the higher voltage to the lower voltage. Assuming that where the touch has negligible resistance, then the current will flow at a level that will equalise the voltages at that point.
What happens when two wires of different phases touch to each other?
If you want to say two wires of different phases touch to each like in 3 phase supply any of two phase touched to eachother then the current will flow according to the voltage difference between these phases and this will be the condition of short circuit and it makes a flow of large current.
Why do Star connected loads work in unexpected ways?
Since the line and phase currents in star connected systems are the same, the currents in the lines change as well. The change in voltage and current causes the change in the electric power, and this the reason why the loads work in unexpected ways.
What happens if you touch a phase conductor without load?
Consider a three phase, 480/277 VAC system. Each phase has potential to ground/neutral. So if you touch a phase conductor to ground, without a load in between, that 277V potential will create a high short circuit current which is limited only by the resistance in the wire and ground. The same is true for phases.
Can you connect two phases of a 3 phase power supply?
Only if you think there is no voltage difference between the two phases. If you connect between 2 of the phases of a 3 phase supply, the result will still be a sine wave of the same amplitude as any of the single phases. There will just be a 180 degree phase shift relative to the reference phase. Click to expand…