The terminology hard wired means that it is not portable. Lights that are not portable are hard wired into the system. Extension trouble lights are an example of a portable light.
You put switch in series with the black supply wire and the black wire to the first light. Then connect black wire of first light to black wire of second light, black wire of second light to third light and so forth. Do the same with the white wires and ground wires.
The green wire on the light fixture is a ground wire. If there is no ground wire in the conduit, the green wire should be attached to the metal box with a screw.
with a standard 1 pole light switch (one switch operating the light) it is black wire to black wire and white to white (non grounded)
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.
To carry the electric power to a light . . OR . . it's wire that is not too heavy to carry.
Just install a cover on the ceiling box.
A light wire is probably a wire with light in it, but to be honest, I haven't really heard of it. lol
When something is hard wired, it is wired directly to the house wire. No cord. You just install the smoke detector like you would a light fixture or an outlet.
first of all, you need a bulb, a wire, and ONE light bulb. You clip the wire on the battery and touch the wire on the bottom of the light bulb
Climb the wire from the light bulb in the arch, then jump hard to the right from the top.
Jump up to the hanging light bulb and climb up the wire. When you are at the top, you should be able to jump hard to the right, off the wire, to get the piece.
You put switch in series with the black supply wire and the black wire to the first light. Then connect black wire of first light to black wire of second light, black wire of second light to third light and so forth. Do the same with the white wires and ground wires.
The green wire on the light fixture is a ground wire. If there is no ground wire in the conduit, the green wire should be attached to the metal box with a screw.
In an incandescent light bulb the wire that gives off the light is called the Filament.
with a standard 1 pole light switch (one switch operating the light) it is black wire to black wire and white to white (non grounded)
Modern light bulbs are made of tungsten wire.
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.