know what each color of wire does in the circuit
The black wire is the "hot" wire, which carries the electricity from the breaker panel into the switch or light source. The white wire is the "neutral" wire, which takes any unused electricity and current and sends them back to the breaker panel.If both wires are black but one has a white stripe, the striped wire is negative, while the plain black wire is positive. Look in the owner manual to determine which wires are negative in a car.
If the multi-colored wire is black and red, the black wire is the negative wire, while the red one is positive. If both wires are black but one has a white stripe, the striped wire is negative, while the plain black wire is positive.
If the live wire directly come to the neutral wire it is the condition of short circuit. In case of Normal wire the wire will burn and then the circuit break and all things become normal except that conductor or wire.
Connecting positive wire to negative wire of the second battery just means you have created a battery with the voltage being the summation of the two batteries individual voltage. As V=IR says, Voltage is the product of the current and resistance in a closed circuit.
There are also positive and negative cables in the jumper cable set. The red one is positive (+), the black one is negative (-). Never connect the red cable to the negative battery terminal or a vehicle with a dead battery.
The bare or green-wrapped ground wires serve as a backup to divert the power safely away in case of an electrical fault. In most cases, two black wires will be attached to the switch's two terminal screws.
The Code considers the neutral conductor a current-carrying conductor only when it carries the unbalanced current from other ungrounded phase conductors. When circuits are properly balanced, the neutral carries very little current.
No, the neutral and ground should never be wired together. This is wrong, and potentially dangerous. When you plug in something in the outlet, the neutral will be live, as it closes the circuit. If the ground is wired to the neutral, the ground of the applicance will also be live.
In the electric power grid, "neutral" is ground, by definition. So the voltage of the neutral wire is always zero If you measure the voltage between two different points on a neutral wire that is carrying current, you will be able to measure a small difference.
Typically the white neutral wire is bonded to ground, but only at the panel. If this is a switch box, the white wire could be bringing power to the box or returning power back to a light/outlet/switchable device. Essentially, power has to feed "into" the switch with one wire and back "out" through another.
The power wire that is grounded is called the “neutral” wire because it is not dangerous with respect to exposed metal parts or plumbing. The “hot” wire gets its name because it is dangerous. The grounding of the neutral wire is not related to the operation of electrical equipment but is required for reasons of safety.
Option 1 - Run a Neutral Wire
If you want to use smart switches and don't have a neutral wire in your switch box, you can hire an electrician to run a neutral wire between the light fixture and the switch. You can also have an electrician rewire the switch and light fixture, which is potentially more expensive.There's a reason why almost every smart switch needs a neutral wire attached: it needs to stay powered all the time. This is because the neutral wire for the circuit is actually in the junction box that holds the light fixture, and the two wires coming down to the switch are the "hot" leg that will power the light.
The answer is: In a WYE 4 wire system the neutral, in theory, carries only the difference of current flow between the 3 phase conductors. So, when the current in phase A, B and C are equal, then there is no current flow in the neutral. Non-linear loads cause harmonics , some of which will add up on the neutral.
Option 1 - Run a Neutral Wire
If you want to use smart switches and don't have a neutral wire in your switch box, you can hire an electrician to run a neutral wire between the light fixture and the switch. You can also have an electrician rewire the switch and light fixture, which is potentially more expensive.
