Today's custom homebuyers expect the latest technology to plug in and work without having to rewire their new home, and they expect you to make it possible. So, if you're building houses in the 21st century, you had better know how to properly specify and install the cabling and devices that make home automation systems tick. Many contractors have worked with speaker, TV, and phone wires, but data cabling is a different story; unless you've installed computer networks in office buildings, it's unlikely you're familiar with the tools and techniques required to properly install the twistedpair cable used in home automation and networking systems. What is Cat 5? The cabling used to connect most computer and data networks is known as UTP,