it protects the sink from rust, if it is not connected your sink and tap fitings will corrode over time. I also earth ceramic basins, although not a requirement it helps keep ther gloss finish intack - plumber of 35 years.
A short piece may be supported by the surface tension of water, but a coil of copper wire would sink.
The Earth wire is there to earth electrical devices that are not double insulated. If there was to be a malfunction in the appliance then you can get a really bad shock if an earth wire is not present. If there is any free electricity roming around then the earth wire will send it down to earth and to the main power station closest to the area instead of through your body. s aged 15
no if there wire less and yes if there not wire less
A 6 mm earth wire can be used to replace a 2.5 mm earth wire, but if there is an existing 6 mm earth wire it must be 6 mm all the way to the earth, and not replaced by a smaller wire between it and the earth connection.
It is the earth wire
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.
It's a special spring wire for cleaning toilets.
By earth wire I am assuming you mean the bare wire and that a black and white wire are connected to the light. If when you connect the earth wire and breaker trips then there is a short between black and earth. It could be a bad ground connection, an internal short in the light fixture where black wire "hot" is connected to metal on the fixture through a nick in wire.
Sometimes there is no need to connect the black earth wire, because the radio will earth by mounting it to the body of the car. (there's no harm in connecting it anyway)
Earth wire
In the visible spectrum or the infrared? Either way, if your earth wire is glowing you have a problem. Your earth wire is not intended as a current carrying wire. If the wire is loaded to the point that it glows then your circuit/breaker is not wired correctly and the earth wire is being used as an unintended path and is a hazard. Earth wires are not sized properly to carry current.
it is the earth wire