Wiktor Wise
Oxidation on electrical connections can cause a range of issues, from reduced performance to safety hazards. Water is often the culprit, but vapours and oxygen in the air can also be factors. To prevent oxidation, it is important to keep electrical connections dry and well-maintained. This can be achieved through regular inspections, cleaning with a mild solvent, and the use of protective coatings or greases. Dielectric grease, for example, can be applied to electrical connections to prevent oxidation, while electrical contact cleaner can be used to dissolve and remove oxidation build-up.
Characteristics and Values for Preventing Oxidation on Electrical Connections
| Characteristics | Values |
|---|---|
| Cleaning | Use a clean toothbrush and a mild solvent like WD-40 to clean electrical connections |
| Coating | Use dielectric grease, gold plating, conformal coating, or antioxidant paste |
| Keep Moisture Out | Regularly check for water damage, leaks, or cracks, especially around outdoor wiring |
| Regular Inspections | Check electrical panels, wiring, and connections for any signs of deterioration, rust, or oxidation |
| Ventilation | Ensure good ventilation to keep connections dry |
| Electrical Contact Cleaner | Use an aerosol spray to dissolve and remove dirt, oil, and oxidation |
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What You'll Learn
Keep moisture out
Water is the primary culprit of electrical corrosion, so keeping moisture away from electrical connections is paramount. To achieve this, you should regularly inspect your wiring and electrical panel to ensure nothing is deteriorating, rusting, or oxidising. Check for any signs of water where it shouldn't be, such as leaks or cracks in indoor pipes, foundations, or walls. For outdoor wiring, ensure there are no spots where rainwater or garden water can collect.
Good ventilation can help keep things dry. If you're in a particularly humid environment, consider providing equipment with positive pressure ventilation from a filtered source to avoid vapour damage. Ducting can be arranged to connect the ventilation system to computers, helping to remove vapours.
To protect electrical connections from moisture, you can use products like WD-40, dielectric grease, or silicon grease. These products can be applied to connections to prevent corrosion and are safe to use on copper, tin, or silver. For aluminium wiring, an antioxidant paste can be applied to prevent oxidation caused by oxygen in the air.
When using products like grease or paste, it's important to follow manufacturer instructions and guidelines. Some connections may not require these treatments, so it's essential to check before application. Additionally, keep in mind that some greases are insulators, so they might affect electrical connections. However, spring-loaded contacts can usually still make a connection despite the grease.
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Use electrical contact cleaner
Using an electrical contact cleaner is an effective way to prevent oxidation on electrical connections. Electrical contact cleaners are designed to remove dirt, dust, oxidation, oil, and other contaminants from electrical contacts, restoring conductivity and ensuring efficient power transmission. They come in pressurized aerosol packaging to provide a forceful spray that reaches into all the crevices of the connectors.
Before using an electrical contact cleaner, it is important to take some precautionary measures. Firstly, ensure that the device is powered off and unplugged or disconnected from the power source to prevent electrical shocks or damage to the equipment. Wear protective gloves and eye goggles to shield yourself from any chemicals and debris. Use non-conductive tools and materials during the cleaning process to further reduce the risk of short circuits or electrical shocks.
When using the electrical contact cleaner, follow the instructions on the packaging. Typically, you would spray the cleaner onto the electrical contacts, letting it dissolve any oxidation and contaminants. After cleaning, use a cotton swab or a soft-bristled brush to wipe away any excess cleaner or debris from the contacts. Ensure that the contacts are completely dry before reconnecting the power source to prevent moisture buildup, which can lead to corrosion and equipment damage.
Regular maintenance is key to preventing oxidation and maintaining optimal performance of your electrical connections. Periodically clean the contacts with a soft-bristled brush or a lint-free cloth to prevent the accumulation of dirt, dust, and other contaminants. Additionally, inspect the contacts regularly and address any signs of corrosion promptly to prevent further damage and ensure the reliable performance and longevity of your electronic devices.
Using an electrical contact cleaner, along with proper maintenance practices, will help prevent oxidation and keep your electrical connections in good condition. This will not only improve conductivity and device performance but also extend the lifespan of your equipment by reducing the risk of corrosion-related damage.
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Apply antioxidant paste
When using aluminium wiring, applying an antioxidant paste can make it safer by preventing oxidation. This treatment is available in a greased form that stops oxygen from reacting with the aluminium and causing corrosion.
To apply antioxidant paste, start by cleaning the conductor with a wire brush or cloth to remove any dirt or debris. Then, apply the antioxidant paste generously to both the connector and the conductor. Ensure you follow the manufacturer's instructions for the specific product you are using, as incorrect installation can be unsafe.
Once you have applied the paste, connect the joint and remove any excess compound with a clean cloth. It is important to only use antioxidant paste where it is required. For example, it is not necessary when pigtailing copper to aluminium or when using 63 and 65 connectors. Always refer to the manufacturer's instructions to determine if and how to use their antioxidant paste.
If you have any doubts or concerns, it is recommended to consult a professional electrician before attempting any electrical work yourself.
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Use dielectric grease
Dielectric grease is a viscous, non-conductive, waterproof substance used to protect electrical connections from corrosion and dirt. It is typically made with a silicone base and a thickener and has a slightly translucent grayish or milky clear colour. Dielectric grease is an electrical insulator and a lubricant, which makes it very useful for electrical connections.
Dielectric grease can be used to lubricate connectors, seal gaps, and prevent corrosion by sealing out moisture. It can also withstand extreme heat cycles, which makes it a good choice for high-temperature environments, such as an engine bay. When used in small amounts, it can also prevent electrical connectors from fusing together, making it easier to disassemble components.
It is important to note that while dielectric grease does not improve connectivity, it helps maintain a good connection. It is also important not to use too much, as this can prevent a good electrical connection. A small layer of grease is usually enough, especially for precise electrical components.
Dielectric grease can be used in a variety of applications, from vehicles to electrical systems in the home. For example, it can be used on battery terminals to prevent rust and corrosion and on headlight housings to prevent fogging. It is also useful for spark plug boots, multi-pin connectors, and antenna connections.
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Gold plating
Gold has unique properties that make it ideal for enhancing the finish and improving the quality of the workpiece. It has a smooth and conductive surface that helps minimize contact resistance, which is crucial for maintaining a strong and stable electrical connection. Gold's anti-oxidation properties, along with its smooth finish, enable a solid connection with the mated surface.
When electroplating gold onto electrical contacts, it is recommended to first apply a nickel undercoating to promote adhesion. It is important to ensure that the coating thickness is appropriate for the specific application, as a very thin coating is typically preferred.
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Frequently asked questions
To prevent oxidation on electrical connections, keep moisture away from your electrical panel and indoor and outdoor connections. Regularly inspect your wiring and electrical panel to ensure nothing is deteriorating, rusting, or oxidizing.
You can use products such as electrical contact cleaner, WD-40, dielectric grease, Boeshield T9, and antioxidant paste to prevent oxidation on electrical connections.
To clean electrical connections, use a toothbrush and a mild solvent like WD-40. Avoid using a wire brush as it can cause scratches.
The frequency of application depends on the product being used and the environment the connections are exposed to. For example, Boeshield T9 is recommended to be sprayed every 6 months, while WD-40 can be sprayed once or twice a year.
