Down to the Wire
Tim Nordstrom, Systems Specialist

Wire is often one of the most overlooked aspects of a job. This is unfortunate because when the proper wire is installed, the job is guaranteed to go smoothly. Some jobs may go smoothly even when an improper wire is installed, but how long will it last? Troubleshooting a job with in appropriate wire can keep you "tangled up" for hours. Usually, the problem involves improper wire, faulty equipment, or a combination of both; however, installing the correct wire from the beginning makes installing easier and troubleshooting a less arduous task.

When in doubt, refer to the manual. Every manufacturer states in their manuals the proper wire size for the distance (in feet) to be run, for both low and high voltage (if applicable). Keep in mind, these are requirements, not suggestions. For example, if a manufacturer wants 12-gauge wire on a 150 ft. run for a 110-volt circuit, do not deviate from these instructions. The manufacturer has run extensive tests, and this wire size is the minimum that should be used. Using these guidelines is the safest way to ensure the proper wire is installed, and that the job runs smooth.

The following are some useful tips for choosing the proper wire. Low voltage wire should be purchased in pairs. For our industry, a good wire to use is a 3 pair (6 wires in one jacket) 18 gauge stranded with an overall foil shield. This wire greatly minimizes any outside noise or interference and in most cases, you’ll have spare conductors available if you need them. For example, a telephone entry or a stand-alone keypad typically requires 4 wires: 2 for power and 2 for relay connection. Using the 3 pair wire not only gives you the correct wire size, it leaves 2 extra conductors (1 pair) for accessories or a possible damaged wire.

Today’s sophisticated equipment is much more dependent on proper wire. Thermostat and/or bell wire should never be used. Quality wire can be purchased in rolls of 1000 feet or larger. Remember, quality wire is more expensive; however, fewer callbacks and service requests add up to savings in the long run. Overall, using the appropriate wire saves on time, money, and gives you peace of mind. If you do not have a wire supplier, give us a call, and we’d be happy to give you a recommendation.