Maya Ellison
Conduit bodies are essential for connecting and protecting electrical wires between destinations. They are used to conceal wires and prevent damage from moisture, humidity, heat, corrosion, and physical damage. There are various types of conduit bodies, including straight, L-shaped, T-shaped, and X-shaped, each with unique functions and features. This article will specifically discuss how to secure a plastic LB conduit body, which is a type of conduit body that forms a right angle and includes two conduit hubs.
Explore related products
What You'll Learn
Drilling a hole to secure the LB conduit body
Drilling a hole to secure an LB conduit body is a practice that some electricians follow. However, it is important to note that drilling into a sealed LB conduit body may be considered a violation or a technical violation, as it could void the product listing and negate the UL listing.
If you decide to drill a hole in the LB conduit body, it is recommended to use a deck screw to secure the body more effectively. You can also use a short nipple with about 2 inches exposed and attach a bonding strap or U-bolt to that segment. Additionally, consider using PVC straps to secure the conduit body to the wall.
Before drilling, check the UL listing for the conduit body. If the conduit body has a cubic inch listing, drilling a hole may be possible. However, you must still meet the wire fill requirements. If the conduit body is not stamped, modifying or splicing it is not allowed.
It is worth noting that drilling a hole in the LB conduit body may not be necessary if the conduit attached to the LB is properly secured. This can be achieved by using PVC reducers or other appropriate methods.
Additionally, some electricians suggest that drilling a hole in an LB fitting for drainage is unnecessary and may indicate bigger issues. Proper sealing and gluing of the conduit should prevent the need for a drain hole.
The Plastic Trade: China's Debt to the US
You may want to see also
Explore related products
Using glue to bind the conduit to the body
PVC conduit glue, also known as PVC cement or solvent cement, is a specialised adhesive used for bonding PVC pipes and fittings. It is essential for creating secure and durable bonds, ensuring proper installation and functionality in electrical and plumbing systems. The glue dissolves the PVC, causing the joined pieces to become one continuous piece of plastic.
There are various types of PVC glue available, each designed for specific applications. The consistency of the glue affects its ease of application, bonding strength, and suitability for different pipe sizes. For standard PVC conduit pipes ranging from 1 to 4 inches in diameter, medium body glue is commonly used. It offers a balanced viscosity, making it versatile and easy to work with while providing a strong bond.
Heavy-body glue, on the other hand, is thicker and designed for larger pipes, typically 3 to 6 inches or above. Its thick consistency is advantageous for vertical or overhead installations, preventing dripping while ensuring a strong and durable bond. Extra heavy-body glue is the thickest option, suitable for pipes with a diameter of 6 inches or more. It provides maximum control during application and forms an extremely strong bond, making it ideal for high-pressure or high-traffic systems.
The curing process for PVC glue typically ranges from a few minutes to several hours, depending on the type of glue used. A full cure ensures the bond is strong and resilient, capable of withstanding pressure, moisture, and temperature changes. This chemical bond is far superior to simple surface bonds created by other adhesives.
The Perfect Guide to Laying Plastic Grass Like a Pro
You may want to see also
Explore related products
Using a plastic PVC strap to secure the LB
Step 1: Prepare the Conduit Body
Before securing the LB with a plastic PVC strap, ensure that the conduit body is properly installed and aligned. Check if there are any specific requirements or restrictions for the installation, such as the need for a larger LB with PVC reducers or the necessity to comply with specific codes and regulations.
Step 2: Choose the Right PVC Strap
Select a suitable plastic PVC strap that meets the required standards and is designed for securing conduit bodies. Consider factors such as the size, thickness, and durability of the strap to ensure it can safely support the LB.
Step 3: Measure and Cut the PVC Strap
Measure the circumference of the conduit body at the desired mounting point. Cut the PVC strap to the appropriate length, ensuring that it will fit snugly around the LB. Allow for some overlap to facilitate a secure connection.
Step 4: Secure the PVC Strap
Wrap the PVC strap tightly around the conduit body, ensuring that it is securely fastened. You can use appropriate fasteners or connectors, such as strut nuts or washers, to attach the strap ends together. Make sure the connection is firm but allows for some flexibility to accommodate thermal expansion and contraction, as advised by electrical professionals.
Step 5: Final Checks and Adjustments
Once the PVC strap is securely attached, perform final checks to ensure the LB is firmly mounted and there is no excessive movement that could cause instability. Adjust the tightness of the strap or the positioning of the conduit body if necessary to achieve a secure and compliant installation.
By following these steps, you can effectively use a plastic PVC strap to secure the LB, ensuring a safe and functional installation that meets the required standards and regulations.
Plastic Ukulele Strings: Are They a Thing?
You may want to see also
Explore related products
Using a bonding strap or U-bolt to secure the conduit
When securing a plastic LB conduit body, one method is to use a bonding strap or U-bolt. This is a reliable method to ensure a secure and efficient electrical setup.
Firstly, you will need to install a short nipple, with around 2 inches exposed after threading both sides. Then, attach the bonding strap or U-bolt to this segment of conduit. A U-bolt is a curved bolt with threads on each end, designed to hold piping or tubing securely against beams.
When using a U-bolt, you will need to take the nuts off each side of the bolt and place the U-bolt around the piping or tubing. Next, drill holes through the support structure, ensuring you do not damage the protective coating, as cracks can lead to rusting. The holes should be the correct size to fit the U-bolt securely, as holes that are too big or too small can cause issues.
After drilling, place the nuts back on and begin tightening. Tighten the nuts by hand first, and then use a power tool or wrench to secure them. Ensure you follow manufacturer guidelines and safety procedures when installing.
This method provides a secure way to attach conduit straps, which can then be verified by gently tugging or shaking the straps to ensure they are firmly secured.
Plastic Frames: Good or Bad for Bees?
You may want to see also
Explore related products
Using a threaded bushing glued into the LB
To use this method, you will need to purchase a threaded bushing that fits the size of your LB conduit body. You will also need to ensure that the bushing is made of an approved insulating material with a temperature rating not less than the insulation temperature rating of the installed conductors.
Once you have the appropriate bushing, apply a suitable solvent-based glue to the bushing and insert it into the LB conduit body. Allow the glue to dry and cure completely before handling or installing the assembly.
After the bushing is securely glued in place, you can use the threaded compression connector of your choice to secure the LB conduit body. This method provides a secure and stable connection for your conduit system while also protecting the wires from abrasion, as required by electrical codes and standards.
Sealing Plastic Tubes: The Ultimate Guide to Stopping Leaks
You may want to see also
Frequently asked questions
You can use a plastic PVC strap to mount the LB.
An LB conduit body is a type of conduit body that forms a right angle and includes two conduit hubs. It is used to route electrical wires through surfaces, often from the outside of a structure to the inside.
You can use PVC glue to connect a flexible conduit to a PVC LB connector. If you want an LB connector that is universal, get one with female threads.
While some people have done this and claim it is not a big deal, others argue that it compromises the weather-tight ability of the conduit body and may result in water intrusion.
A conduit body is a connecting component for two pieces of conduit. It allows electricians to change the direction of the raceway and acts as a joint. Conduit bodies are used to conceal wires and protect them from moisture, humidity, heat, corrosion, and other physical damage.
