Interconnecting wire routes may be shown approximately, where particular receptacles or fixtures must be upon a common circuit. Wiring diagrams use enjoyable symbols for wiring devices, usually swing from those used on schematic diagrams. The electrical symbols not unaided feint where something is to be installed, but plus what type of device is physical installed.
It lacks the information about the wiring and placement of individual components. It only represents the main components of the system and ignores any small components. This is why; electricians do not rely on block diagram. The following two examples of block diagram show an FM transmitter and a variable frequency driver VFD. This diagram shows the process of converting an audio signal into frequency modulated signal.
It is pretty simple and easy to understand. Each block process the signal and pass it to the next one. Practically, the FM transmitter does not look like this, because the block diagram omits the individual components. This block diagram shows a 3 phase AC power supply conversion into a DC which is again converted into a controlled AC supply.
It is quite a complicated process but this diagram simplifies the process into blocks for better understanding. The block diagram provides an idea how the process is done by not delving too deep into the electrical terms but it is not enough to implement a circuit. Each block is a complicated circuit that can be explained using other drawing techniques described below.
The schematic diagram of an electrical circuit shows the complete electrical connections between components using their symbols and lines. Unlike wiring diagram, it does not specify the real location of the components, the line between the components does not represent real distance between them. One can easily troubleshoot certain schematic by applying electronic circuit theory. It is the most common type of electrical drawing and are mostly used in implementing electrical circuits by technician.
Most engineering student rely of schematic diagram while developing various electrical projects. This is a schematic diagram of a voltage amplifier. It uses various symbols to represents the electrical components and the lines to represent the electrical connection between their terminals. The practical circuit may vary in appearance but the electrical connection and its function will remain the same.
Single Line diagram SLD or one-line diagram is the representation of an electrical circuit using a single line. As the name suggests, a single line is used to denote the multiple power lines such as in 3 phase system. Single line diagram does not show the electrical connections of the component but it may show the size and ratings of the components being used. They are used for determining and isolating any faulty equipment in any power system during troubleshooting. The SLD diagram uses dedicated electrical symbols and icon for different components.
How an Outlet Circuit Works. The diagram will show how a standard "Switched" duplex receptacle is wired. Take notice that only a 3-wire cable is needed to perform this circuit. The white wires tie together to complete the return side of the circuit while the black wire hot wire runs through the 2-way switch and out to the outlet. How an Outlet Circuit Looks. One of the most common wiring configurations your going to find with outlets are shown in the diagram here.
These outlets are not switched. They are connected straight from the power source and are hot at all times. The diagram here shows 2 outlets wired in series and more outlets can be added to this circuit by wiring the 2nd outlet just like the 1st outlet to keep the circuit continuing on until you end the circuit at the last outlet.
Now lets get a little more involved, in the diagram here we are going to remove the jumpers on one-side of the receptacles. This allows for a separate circuit to be wired to the other screw and allow the upper and lower outlets to work independently of each other. This circuit allows for the bottom outlet to be switched while the top outlet will remain hot at all times. To perform this circuit with power coming into one of the receptacles, you will need to use a 4-wire cable from receptacle to receptacle which allows for the extra circuit.
Most older homes are wired for the 3-wire outlet as shown here. The 3-wire connection is now outdated where current dryers are wired with a 4-wire cable. The only difference is the addition of an isolated ground wire separate from the neutral, but the 3-wire circuit is still fine and does not have to be upgraded.
You may want to check with your local codes to verify this. How a 3-wire Dryer Outlet Circuit Looks. The 3 prong dryer wiring diagram here shows the proper connections for both ends of the circuit.
This circuit originates from the breaker box containing a 2-pole 30 Amp breaker. If your running a new circuit, I highly recommend that you bring your outlet up to code and install a 4-prong dryer outlet. See Below. The 4-wire connection is the new updated circuit. The only difference is the addition of an isolated ground wire separate from the neutral as mentioned earlier. How a 4-wire Dryer Outlet Circuit Looks.
As you can see, there is now an added dedicated neutral. The ground is now a dedicated wire also. But if you notice, both the neutral and the ground wires both connect to the same ground bar inside the panel box. As mentioned earlier, the neutral and ground are really the same but this wiring method is more accurate because a return line or "grounded neutral" should be a white wire and not green. Some panel or breaker boxes will have a dedicated neutral bar and a dedicated ground bar, but they will still be physically connected.
How a Dimmer Switch Circuit Works. When installing a Dimmer switch, all you're really doing is controlling the amount of voltage flow to a light which makes it dim at a low setting to a fully bright light at maximum setting. You should always make sure the load Light is capable of handling a dimmer switch. Some lights will not accept dimmers such as older lights using ballast. These style lights must have full power to operate properly. See my Romex Cable page to get familiar with the different types of wire The cable consist of a black wire, a white wire and a bare copper wire.
How a Dimmer Switch Circuit Looks. You have an incoming hot wire black going to one screw it does not matter if you use the brass or silver screw on the side of the 2-way switch and a black wire from the other screw on the 2-way switch going to the load light. Notice that the wiring diagram Figure 11 , uses both pictorial representations and schematic symbols.
The schematic Figure 12 drops all pictorial representations and depicts the electrical system only in symbols. When dealing with a large power distribution system, a special type of schematic diagram called an electrical single line is used to show all or part of the system. This type of diagram depicts the major power sources, breakers, loads, and protective devices, thereby providing a useful overall view of the flow of power in a large electrical power distribution system.
On power distribution single lines, even if it is a 3-phase system , each load is commonly represented by only a simple circle with a description of the load and its power rating running power consumption. Unless otherwise stated, the common units are kilowatts kW. Figure 13 shows a portion of an electrical distribution system at a nuclear power plant. Don't Miss Our Updates.
Be the first to get exclusive content straight to your email. We promise not to spam you. You can unsubscribe at any time. Recommended Articles.
0コメント