Hard wiring something is when you terminate the device or equipment directly with the cable/wires that are coming from the panel. Say for example: You have a 40' length of 10-3 M.C. cable (or similar) coming from your panel to feed power to the oven. In the case that the oven needs to be hard wired , there will be a junction box in the back , bottom, portion of the oven or an insulated cord with uncapped wires hanging out in which (either way) you need to splice the 10-3 cable to the wire ends of the oven inside that junction box (or the junction box that is installed in the wall). If the oven didn't need to be hard wired than you would normally install a 30-60 amp receptacle/outlet in a 4x4 box in the wall and you would terminate the 10-3 cable to it and the oven would come with a cord and plug that you would just plug into the wall.
So, an easy way to think of it is: If the equipment needs to be hard wired than it will not have a plug on the end of the cord/cable.
And if it doesn't need to be hard wired than you will just plug it into an outlet.
American Wire Guage. The smaller the number the larger the wire. As in an AWG 14/2 wire is much smaller than an AWG 10/2 wire.
It means flow of electrons is possible through the wirei.e no cuts/breaks/no high resistance is offered by wire.
It depends if you mean the telegraph or wiring. The telegraph was invented by Samuel Finley Breese Morse around 1832. If you mean just wire, nobody really knows who invented it. Wire is probably over 4000 years old.
If you mean 2/0 copper wire it is rated 175 amps. # 2 wire is 115 amps. If you are referring to 2.0 metric it is rated 15 amps.
Some light fixtures do not have a grounding wire. In such cases the two wire going to the light may both be black. You can connect black supply to either black light wire and white supply to the other black wire.
Advantages and disadvantages of hardwire and softwire systems
grooved wire mean earth wire smooth wire mean suply wire
Well, if you mean, like the wire breaking, that can be caused by eating hard stuff they told you not to eat like maybe a carrot or and apple, the wire could snap.
Hard Black Wire
yes
it mean wire
hardware
If you mean a bare copper wire, that is the "ground" wire.
what does wire service mean
Yes, you can.
half hard bright
Unable to apply