How to Wire an Electrical Contact

How to Wire an Electrical Contact

When it comes to wiring electrical equipment, including your home appliances and motors, one of the most important components you will come across is an electrical contact. Understanding how this tiny device works can help you make sure your devices function properly and stay connected at all times.

What Are Electrical Contacts Made Of?

Typically, an electrical contact is a piece of metal that completes or disrupts an electric circuit. When two contacts touch, they close the circuit; when they separate, they open it.

These contacts can be used in a wide variety of applications, such as circuit breakers, switches and relays. They are typically composed of nickel, cadmium or copper or other alloys. They can also be plated with gold for a number of reasons, including increased conductivity and corrosion resistance.

How to Wire an Electrical Contact

If you are a handyperson who loves to install and repair electrical equipment, you may be asked to wire an electrical contact on occasion. Fortunately, wiring an electrical contact is not difficult to do.

The first step in wiring a contact is to connect the power and device wires. These wires go to the input and auxiliary contacts on the contactor.

Once the wires are connected, you will need to energize the contactor with 120 volts AC. You can do this by connecting a switch to the control wire terminals on the contactor’s front.

After energized, the contactor will click as it engages with the input. This is because the armature in the contactor moves in response to the magnetic coil’s current.

Now that you know how to energize and de-energize an electrical contact, it’s time to learn how to wire the contact. Using the wiring diagram on your contactor, wire each input and auxiliary contact.

You’ll need to use a screwdriver to loosen the holding screws in the contact blocks for each wire. Then, insert the wires only so far that no insulation juts out of the contact block. Once all the wires are inserted, tighten down the screws.

How to Clean an Electrical Contact

It is important to clean electrical connections frequently to prevent them from deteriorating and failing over time. A common culprit for this problem is oxidation, which can coat metals in a thin layer that reduces their conductivity.

Cleaning a contact can be done with rubbing alcohol or baking soda and vinegar. Be sure to test the cleaner before applying it to the electrical connection.

There are many types of contact cleaners available, so it is important to find one that is suitable for the type of connection you are working on and the metal you are using. You can also use a wire brush or sandpaper to clean the connection, depending on its condition.

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