How to install wire armoured cable in a cable tray?

Hey there! As a supplier of wire armoured cable, I've had my fair share of experiences with installing these cables in cable trays. In this blog, I'll walk you through the process step by step, sharing some tips and tricks along the way. So, let's get started!

What is Wire Armoured Cable?

Before we dive into the installation process, let's quickly talk about what wire armoured cable is. Wire armoured cable, also known as armored cable, is a type of electrical cable that has a protective layer of metal armor around the insulation. This armor provides extra protection against mechanical damage, moisture, and even rodents. It's commonly used in industrial, commercial, and residential applications where the cable needs to be protected from external factors.

Why Use Cable Trays?

Cable trays are a popular choice for installing wire armoured cable because they offer several advantages. First of all, they provide a safe and organized way to route cables. By keeping the cables off the ground and away from potential hazards, cable trays help prevent damage and reduce the risk of electrical fires. They also make it easier to access and maintain the cables, which can save time and money in the long run.

Tools and Materials You'll Need

Before you start the installation process, you'll need to gather the necessary tools and materials. Here's a list of what you'll need:

• Wire armoured cable
• Cable trays
• Cable supports
• Cable ties
• Cable glands
• Cutting tools (such as a cable cutter or hacksaw)
• Measuring tape
• Drill and drill bits
• Screwdriver
• Safety equipment (such as gloves, safety glasses, and a hard hat)

Step 1: Plan the Installation

The first step in installing wire armoured cable in a cable tray is to plan the installation. This involves determining the route of the cable, the location of the cable trays, and the number of cables that will be installed. You'll also need to consider any obstacles or restrictions that may affect the installation, such as walls, ceilings, or other equipment.

To plan the installation, start by creating a layout diagram of the area where the cable will be installed. This diagram should show the location of the cable trays, the route of the cable, and the location of any cable supports or glands. You can use a pencil and paper or a computer-aided design (CAD) program to create the diagram.

Once you have the layout diagram, you'll need to measure the length of the cable and the distance between the cable trays. This will help you determine the amount of cable and cable trays you'll need to purchase. You'll also need to consider any additional materials, such as cable ties, glands, and supports.

Step 2: Install the Cable Trays

The next step is to install the cable trays. Start by mounting the cable tray supports to the wall or ceiling using screws or bolts. Make sure the supports are level and securely fastened to the surface.

Once the supports are installed, you can install the cable trays. Place the cable trays on the supports and secure them using screws or bolts. Make sure the cable trays are aligned and level, and that there is enough space between the trays for the cables to be installed.

If you need to connect multiple cable trays together, you can use cable tray connectors. These connectors are designed to join two cable trays together and provide a smooth transition for the cables.

Step 3: Install the Cable Supports

After the cable trays are installed, you'll need to install the cable supports. Cable supports are used to hold the cables in place and prevent them from sagging or moving within the cable tray.

There are several types of cable supports available, including cable hangers, cable clamps, and cable ties. The type of support you use will depend on the size and weight of the cables, as well as the location and orientation of the cable tray.

To install the cable supports, start by attaching them to the cable tray using screws or bolts. Make sure the supports are evenly spaced and that they provide adequate support for the cables.

Step 4: Cut and Prepare the Cable

Once the cable trays and supports are installed, you can start cutting and preparing the cable. Start by measuring the length of the cable you'll need and mark it using a measuring tape and a pencil.

Next, use a cable cutter or hacksaw to cut the cable to the desired length. Make sure the cut is clean and straight, and that there are no frayed or damaged strands of wire.

After the cable is cut, you'll need to prepare the ends of the cable for installation. This involves removing the outer sheath and armor of the cable, as well as the insulation from the individual conductors. You can use a cable stripper or a utility knife to remove the sheath and insulation.

Step 5: Install the Cable in the Cable Tray

Now that the cable is cut and prepared, you can start installing it in the cable tray. Start by placing the cable in the cable tray and securing it using cable ties or cable clamps. Make sure the cable is evenly spaced and that there is enough slack in the cable to allow for movement and expansion.

If you need to make a bend in the cable, make sure the bend radius is at least 10 times the diameter of the cable. This will help prevent damage to the cable and ensure that it functions properly.

As you install the cable, make sure to label each end of the cable with a tag or label. This will make it easier to identify the cable and its destination later on.

Step 6: Install the Cable Glands

Once the cable is installed in the cable tray, you'll need to install the cable glands. Cable glands are used to seal the ends of the cable and prevent moisture, dust, and other contaminants from entering the cable.

There are several types of cable glands available, including compression glands, cable entry glands, and explosion-proof glands. The type of gland you use will depend on the type of cable, the environment in which the cable will be installed, and the requirements of the electrical code.

To install the cable glands, start by inserting the cable into the gland and tightening the gland nut or screw. Make sure the gland is securely fastened to the cable and that there is a tight seal between the gland and the cable.

Step 7: Test the Cable

After the cable is installed and the cable glands are in place, you'll need to test the cable to make sure it is functioning properly. This involves using a multimeter or other testing equipment to measure the resistance, voltage, and continuity of the cable.

If the cable fails the test, you'll need to troubleshoot the problem and make any necessary repairs. This may involve checking the connections, inspecting the cable for damage, or replacing the cable if necessary.

Tips and Tricks

Here are some tips and tricks to help you install wire armoured cable in a cable tray:

• Always wear safety equipment, such as gloves, safety glasses, and a hard hat, when working with electrical cables.
• Make sure the cable tray is properly grounded to prevent electrical shock.
• Use cable ties or cable clamps to secure the cables in the cable tray and prevent them from moving or sagging.
• Label each end of the cable with a tag or label to make it easier to identify the cable and its destination.
• Follow the manufacturer's instructions and the requirements of the electrical code when installing the cable and cable glands.
• If you're not sure how to install the cable or cable glands, consult a professional electrician or cable installer.

Conclusion

Installing wire armoured cable in a cable tray is a relatively straightforward process, but it does require some planning and preparation. By following the steps outlined in this blog and using the right tools and materials, you can install the cable safely and efficiently.

If you're in the market for wire armoured cable or other types of electrical cables, be sure to check out our website. We offer a wide range of high-quality cables, including Self-regulating Heating Cable, 1mm 1.5mm 2.5mm 4mm 300/500V Multi Core Copper Electrical Cable, and UL/CSA Certified THHN Cable - Dual-Layer Insulation For Commercial & Industrial Use.

If you have any questions or need help with your cable installation, please don't hesitate to contact us. We're here to help you find the right cable for your needs and provide you with the support and guidance you need to install it safely and effectively.

References

• National Electrical Code (NEC)
• IEEE Standard for Cable Tray Systems
• Manufacturer's instructions for wire armoured cable and cable glands