The outside of cables is coated in a protective sleeve - that insulates the wire from the weather. So long as the bird doesn't touch the conductor - it's fine.
Unless the bird contacts two wires at the same time, the electric current will not pass through the bird.
The wires are coated in rubber.
Yes, a bird can get electrocuted if it comes in contact with two bare power lines. The power lines are spaced apart so only the largest birds (buzzards, eagles, etc.) would be able to touch two at the same time.
The wingspan on a big bird is large enough to touch two wires at once. Any difference in voltage between the wires will cause current to flow through the bird, perhaps killing it. Small birds can only touch one wire at a time.
To get electrocuted you need to complete an electrical circuit. That takes two wires or a wire and an "earth". A bird on a wire is not making a connection to a second wire or to the earth. Therefore no electricity flows and they are perfectly safe.
the bird
For an electric current to pass through the bird's body, there must be a potential difference (voltage) across its legs. But its legs are connected to a very good conductor which means that the bird's legs must be at the same potential -no potential difference, no shock!
Birds don't get electrocuted unless they touch something else besides just the wire -- the electricity will then flow through their bodies toward whatever they're touching. Sometimes you do see birds that have been killed by the electric wires.
Power lines are insulated and as long as they don't touch the ground (or another object) they won't be electrocuted.AnswerMost power lines are not, in fact, insulated because they are already surrounded by an insulating media -air.The reason that birds don't get electrocuted is because each foot is at the same potential and, for current to flow (it's the current which causes electrocution) through its body, each foot must be at a different potential. The bird is safe, providing another part of its body doesn't come in contact with one of the other conductors.
wear a garden glove
Very interesting...A current will flow (or somebody will get electrocuted!) if there is a sufficiently high potential difference across him.When birds sit on a wire (of high potential), the whole body becomes at a high potential, and there is no potential difference across it. Hence, no current passes through it and the bird is not electrocuted.However, if a person, while standing on the ground, touches the same wire, he will be electrocuted.add You've discovered one of the reasons why overhead electric wires are separated from each other. We do have blackouts caused by a bird or an opossum (Aus) bridging between the wires. In NZ in suburbia, almost all power poles have a wide metal band on them to stop the possums from climbing them.
It doesn't need to. In order for electricity to flow, there has to be two connections, one to the positive and one to the negative. When a bird is sitting on a wire, it is not grounded, so it does not get electrocuted.