Feeder cables are used in the telecommunications industry to connect radio transmitters, antennas, and other equipment to the power source. They come in different sizes and types, including 7/8", 1/2", and 1-1/4" feeder cables.

The 7/8" feeder cable is a common type used for medium to high-power applications. It has a maximum power rating of around 4 kW and is often used for long-distance transmission of signals.

The 1/2" feeder cable is a smaller and more lightweight option, commonly used for low-power applications. It has a maximum power rating of around 1 kW and is often used for short-distance transmission of signals.

The 1-1/4" feeder cable is a larger and more heavy-duty option, typically used for high-power applications. It has a maximum power rating of around 10 kW and is often used for long-distance transmission of signals.

Feeder cables are typically made of copper or aluminum, and may be coated with a protective material such as polyethylene or polyvinyl chloride (PVC) to protect against weather and environmental conditions.

Overall, feeder cables are an essential component of the telecommunications industry, providing a reliable and efficient way to transmit signals and power to radio transmitters, antennas, and other equipment. The choice of size and type of feeder cable will depend on the specific application and power requirements.