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This is required. Login to Your Account. Remember Me? Register Forgot password? What's New? Results 1 to 6 of 6. Thread Tools Show Printable Version. Below is a modified section of the wiring drawing for a round-dial 10EE, drawing EE The starting circuit should be the same for all 10EEs with MG drive.
I don't know about everyone else, but I found the non-standard symbols used on the drawing very confusing. For example, the contactor's coil is shown by a circle with two terminals the same symbol is used elsewhere for a light bulb. The transformer symbol looks like two resistors sitting side-by-side, etc. It took me the longest time to make sense of the diagram, so I've annotated the coil, overload heater one of two and overload switch if that's the correct term for it for reference.
One thing that is helpful to know about the diagram is that the relative positions of the terminals on the contactor are the same as the actual unit. Here is a photo of a 10EE Cutler-Hammer contactor with the same annotations, for reference: I forget who posted this photo originally, but it was posted here within the last few months.
Contactor coils The question of changing coils or running V coils on V has come up a number of times. You can run a V coil on the lower voltage with a series capacitor, but the size would need to be determined experimentally. My square dial has a Cutler Hammer contactor with a coil marked I could make copies of it if there is enough interest.
I hardly need to preach the economics of quantity in this august assemblage. They would be at least as high quality as the originals, fiberglass tape wrapped and vacuum impregnated with transformer varnish. The attached pic of locomotive fuel boost pump field coils illustrates the construction.
Didn't get the pic on last post.Ls Contactor Wiring Diagram — wiring diagram is a simplified usual pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the gift and signal connections in the midst of the devices.
A wiring diagram usually gives information roughly the relative slant and concurrence of devices and terminals on the devices, to support in building or servicing the device. A pictorial diagram would piece of legislation more detail of the living thing appearance, whereas a wiring diagram uses a more symbolic notation to put the accent on interconnections over swine appearance.Titanium barbell
A wiring diagram is often used to troubleshoot problems and to create certain that every the links have been made and that everything is present. Architectural wiring diagrams accomplishment the approximate locations and interconnections of receptacles, lighting, and remaining electrical services in a building.
Interconnecting wire routes may be shown approximately, where particular receptacles or fixtures must be on a common circuit. Wiring diagrams use gratifying symbols for wiring devices, usually alternative from those used upon schematic diagrams.
The electrical symbols not solitary enactment where something is to be installed, but afterward what type of device is innate installed. For example, a surface ceiling roomy is shown by one symbol, a recessed ceiling blithe has a swap symbol, and a surface fluorescent lighthearted has substitute symbol.
Each type of switch has a substitute parable and in view of that pull off the various outlets. There are symbols that fake the location of smoke detectors, the doorbell chime, and thermostat. A set of wiring diagrams may be required by the electrical inspection authority to implement association of the domicile to the public electrical supply system. Wiring diagrams will in addition to adjoin panel schedules for circuit breaker panelboards, and riser diagrams for special facilities such as flare alarm or closed circuit television or other special services.
Circuitry layouts primarily shows the physical placement of parts and also links in the constructed circuit, but not necessarily in logic order.
To check out a wiring diagram, initially you have to recognize what essential elements are included in a wiring diagram, and also which photographic icons are utilized to represent them. The typical elements in a wiring diagram are ground, power supply, wire and link, output devices, switches, resistors, reasoning gate, lights, and so on.
A line stands for a wire.Secrant mobile
Cords are made use of to attach the elements with each other. There should be a legend on the wiring diagram to tell you just what each color implies. Typically circuits with greater than two parts have 2 standard sorts of links: collection and parallel. A series circuit is a circuit in which components are linked along a single course, so the existing flows via one part to get to the next one.
In a series circuit, voltages accumulate for all components attached in the circuit, and currents are the same through all components. In a parallel circuit, each tool is directly connected to the source of power, so each gadget gets the same voltage. The current in a parallel circuit flows along each identical branch as well as re-combines when the branches reunite. An excellent wiring diagram should be technically proper as well as clear to review.
Look after every information. The representation ought to show the right instructions of the favorable and also negative terminals of each element. Use the right symbols. Learn the significances of the basic circuit signs as well as select the right ones to use.
Some of the icons have really close appearance. You have to have the ability to discriminate before applying them. Draw linking cords as straight lines.
Make use of a dot to show line junction, or usage line jumps to indicate cross lines that are not attached.
Square D 8903 Lighting Contactor Wiring Diagram Download
Tag components such as resistors and also capacitors with their values. Ensure the text positioning looks clean. Skip to content.A relay is basically a switch but not like a switch that's on a wall. A wall switch relies on someone to flip it which will then control a light or some other type load. A relay is switched by electrical power and not a human.
This is done by energizing a coil which is internal to the relay and by energizing the coil, the relay changes state just like a wall switch would. Therefore when you energize a relay, you are switching circuits off and on. Relays have many purposes and are used in a variety of ways such as electronic circuit boards, machines, appliances, automobiles and the list can go on.
The main purpose of a relay is to switch electrical circuits off and on at given times and allow circuits to be automated. A great advantage with relays is the ability to switch many different circuits of different voltage types all at once by using the same relay. Wiring Relays Although relays come in a huge variety of designs, shapes and sizes, They all basically work with the same concept.
I'm going to be covering some industrial relay logic and the images you see here are some of the most common types used for industrial controls also called machine controls. These images show a square 3-pole relay and it's socket on the left and a round 2-pole relay and it's socket on the right. The socket is used to connect your wires to the relay. This particular relay with 3-poles means you have 3 separate switches or what we'll call contacts.
And So On. The square relay pinout shows how the relay socket is configured for wiring. This pinout image is only a 2-pole diagram for room on the page purposes, but you can get the picture here with this one since a 3-pole will just have 1 more set of contacts. As you can see, there is absolutely no difference between the square type and the round type other than the ratings on the relay.
Otherwise they work exactly the same. See my Switch Terminology Page for more on contact arrangements if you need to. By looking at the diagram below we can go through the basic concept of a relay and how they operate.
This diagram will show you how simple it is to control motors, lights, valves, other relays and any type load you want. In this example we are simply turning on a light. Just like basic house wiring, we always want to control switch the hot wire. So as you can see below, L1 goes down into a normally closed switch. This means the current travels through that switch until it see's an open switch and cannot go any further. Now the 2 MCR contacts which are normally open as shown will now close.
This allows current flow through the contacts and energizes the light. Now to turn the light off, you simply depress the STOP button and this will open the circuit to the relay, de-energizing the coil. The relay contacts open to their normal state and stop the current flow to light. There you have it. A relay circuit. Now these diagrams are known as relay logic or ladder diagrams.
It's using relays to control the circuit and also the diagram will begin to take the shape of a ladder as the relay logic grows. It will continue downward as you will see later on.
Ls Contactor Wiring Diagram
Now in the diagram below I have added a motor starter. A motor starter is just another name for a certain type of relay that is used to control a motor. We'll call this MTR1 Motor1.Large electric motors with a high starting torque, like an air conditioner's compressor motor, often use a start capacitor kit. A start capacitor kit contains a start capacitor, relay and wires.
The start capacitor gives the motor's windings an electric boost during the start-up phase. The relay disconnects the start capacitor from the motor's electrical circuit once the motor has reached operational speed. The wires on a start capacitor kit use color-coded insulation and connect to the motor's run capacitor and a contactor -- the relay supplying power to the motor.
Turn off the electricity to the unit the motor operates. Unplug the unit if it connects to a wall receptacle. Turn off the unit's circuit breaker if the unit wires directly to the circuit breaker.Electric furnace: the basics
Inspect the start capacitor's wiring diagram. The diagram identifies the capacitor and relay's wire color and the wire's function. Often a stamp on the side of the relay shows the wiring diagram.
Push the wire terminal on the start capacitor relay's "Common" wire, usually the black wire, to the common terminal on the load side of the unit's contactor. The wires connected to the motor's common terminal, marked "C" or "COM" on the motor's wiring chart, also connect to this contactor terminal. Push the wire terminal on the start-capacitor relay's "Run" wire onto the run capacitor's "HERM" terminal.Copy names of files in folder mac
The wire connected to the motor's start terminal, marked "S" on the motor's wiring chart, also connects to this run capacitor terminal. Push one of the wire terminals on each of the short wires in the start-capacitor kit onto the start capacitor's terminals. One wire goes on each start capacitor terminal. Push the terminal on one of the start capacitor's wires onto the start capacitor relay's "Start" terminal.
Push the wire terminal on the start capacitor's second wire onto the run capacitor's common terminal, often labeled "C," "COM. Based out of Central Florida, Robert Sylvus has been writing how-to and outdoor sports articles for various online publications since Sylvus has been a home improvement contractor since He is a certified HVAC universal technician.
Hunker may earn compensation through affiliate links in this story. Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Robert Sylvus. Show Comments.Please download these contactor wiring diagram ac unit by using the download button, or right click on selected image, then use Save Image menu. A wiring diagram is a straightforward visual representation in the physical connections and physical layout of an electrical system or circuit. It shows how the electrical wires are interconnected and may also show where fixtures and components could possibly be connected to the system.
Wiring diagrams help technicians to view the way the controls are wired to the system. Many people can read and understand schematics referred to as label or line diagrams.
This type of diagram is like going for a photograph from the parts and wires all connected up. A wiring diagram is an easy visual representation in the physical connections and physical layout of an electrical system or circuit. It shows what sort of electrical wires are interconnected and will also show where fixtures and components could possibly be coupled to the system. Use wiring diagrams to help in building or manufacturing the circuit or electronic device.
How to Wire Up a Start Capacitor
They are also useful for making repairs. DIY enthusiasts use wiring diagrams however they are also common in home building and auto repair. For example, your house builder should read the place of business of electrical outlets and lightweight fixtures employing a wiring diagram to stop costly mistakes and building code violations. A schematic shows the program and function with an electrical circuit, but is not focused on the physical layout in the wires. Wiring diagrams show how the wires are connected and where they should perfectly located at the actual device, and also the physical connections between each of the components.
Unlike a pictorial diagram, a wiring diagram uses abstract or simplified shapes and lines to demonstrate components. Pictorial diagrams will often be photos with labels or highly-detailed drawings in the physical components. If a line touching another line includes a black dot, it implies the lines are connected. Most symbols utilized on a wiring diagram look like abstract versions in the real objects they represent. A resistor is going to be represented having a group of squiggles symbolizing the restriction of current flow.
An antenna can be a straight line with three small lines branching off at its end, just like a real antenna.This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. This article has been viewedtimes. Learn more Many large pieces of equipment are powered directly from high voltage lines.
These lines far exceed the volts AC standard in most homes. These voltages must be electrically isolated from the standard volts AC. Contactors are used to provide this isolation. Contactors use volt standard power to energize a magnetic coil, which causes a set of internal contacts to close and provide higher power to the equipment.
Things You'll Need. Related Articles.
Acquire the contactor. Make sure that the contacts of the contactor are rated in both voltage and current to handle the expected load that will be required by the equipment being powered. Contactors are available from building and construction supply stores, as well as some larger hardware stores.
Study the contactor manufacturer information. The manufacturer information will identify the 2 input pins for volts AC control.
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