Paige direct burial 18 AWG / 13 conductor wire is recommended for residential and small commercial irrigation systems. This multi strand wire is for low voltage irrigation systems for controller to valve connections. Wire cable meets ASTM B-3 standards with multiple conductors of solid copper, insulated with .015" of 80°C/176°F color coded PVC insulation inside a .025" extruded PE jacket with a nylon rip cord.Features: Suitable for direct burial; Rated 30 volts; Outer Jacket is UV and sunlight resistant; Identification markings imprinted on outer cable jacket approximately every two feet; Please Note:Wire splices are the weak link of any electrical circuit. It is especially important to make proper joints in irrigation or landscape lighting systems, whether direct burial or valve box installation, because the joints are exposed to wet and damp environments that can cause corrosion of the copper conductor, premature failure, and risk of fires.Paige Electric recommends the strict use of Model DBR/Y-6, as manufactured by the 3M Company or Silicone-filled wire nuts as manufactured by IDEAL Industries. (See accessories noted below)Visit Paige Electric Conduit Calculator for proper conduit sizing requirements, if needed.