Miniature track provides versatility for every lighting need|Connectors simply push into the ends of the track eliminating splicing|Entire track system is fully polarized and grounded|Channel is extruded aluminum with 0.06 in nominal wall thickness|Solid copper buss bars encased in rigid extruded PVC insulators|Polarized connectors and end caps are molded polycarbonate|Electrical capacity is 20 A|Cross section equivalent of 12 AWG wire neutral conductor|Track system is recommended for ceiling mount only|Visual polarity groove indicates proper electrical installation of lampholder adapter|4 ft L nominal