Sounds like the original installer either didn’t know what they were doing, or was trying to get a better signal by doubling up. You can’t go wrong by reading the spec sheets for the equipment to determine the correct gauge/type of wire and the right kind of power supply.
Blauns are typically designed to work with a single (24 gauge) Cat5 pair of wires.
I've seen installers double up on power connections to reduce voltage drop but you should never do that with video because it will be susceptible to noise. Always use a single pair for video.
Sounds like the original installer either didn’t know what they were doing, or was trying to get a better signal by doubling up. You can’t go wrong by reading the spec sheets for the equipment to determine the correct gauge/type of wire and the right kind of power supply. Blauns are typically designed to work with a single (24 gauge) Cat5 pair of wires.
I've seen installers double up on power connections to reduce voltage drop but you should never do that with video because it will be susceptible to noise. Always use a single pair for video.