How the electrical panel operates is another interesting and crucial part to learn as far as electrical work and appliances are concerned. Whenever you want to do any electrical repair, your first task will be to switch off power coming to the circuit of the part of repair, of which you will do at the electric panel. Alternative, the main electrical service box is called a load center.
In the main electrical service panel, power coming from the utility is distributed to various branches connected to various appliances, and outlets in the home. Again depending on the level consumption of power and power distribution network in the home, there can be need for additional smaller panel.Besides the main electrical service panel, then can be a small electrical panel, just in case the area of power utilization is large. Inside the electrical service panel, are circuit breakers which will allow you to stop any current flow to the parts you want to work on.
There is always the main circuit breaker which is also known as the double-pole service connect. As you open the door of the panel, what you will see first are the main circuit breaker owing to its size and conspicuous positioning, which is normally at the top, and sometimes at the bottom or the sides. Its function is to control power going to various branches branch circuit breakers.
Entering into the main circuit breaker, are two black service wires, which are known as hot bus bars. As they enter they are snapped into position by the main circuit breaker so that as provide power to the circuits. Then the electric current will leave the circuit breaker through two hot wires.
Current leaving the two hot wires will be converted to electric energy which will be used in the various electric appliances and bulbs. Upon return to the electrical service box, the current will do so through neutral wires, which are always white, which are then connected to the neutral bus bar. Then the bar connects to the main electrical service neutral which returns the current to the utility grid, and the cycle continues.
The other interesting part is the main bonding jumper, which connects the neutral ground bus with the main electrical service panel. Just adjacent to the connection is another one which involves a copper wire which links the neutral wire to the rod driven to the earth and it is the last connection which allow safe passage of stray currents.
Alternatively, there can be a separate ground connection of a ground bus bar. Unlike with the last connection, electricity flows from the neutral wire to the ground bus.
A thorough understanding of the electrical panel will enable you to do your assignment safely.