We have had customers run wire up to 1000′ using Shielded 18GA Wire with success. We can’t recommend or guarantee that this will work but we have customers do this with success. Click here – http://www.absoluteautomation.com/18-awg-stranded-two-conductor-wire/ – for our recommended wire.
Discard the small metal or plastic reducer used for smaller cables. Strip the buried wire outer jacket and wire insulation to appropriate lengths. Twist the bared wires together creating a “pigtail union”. Solder each connection with just enough solder to tin the twists. Place insulator caps over the unions. Use a cable tie to fasten [...]