Polarity indicator visual polarity groove indicates proper electrical installation of lampholder adapterVoltage rating of 120 VACCurrent rating of 10 AThe structural channel is extruded aluminum with 0.05 in nominal wall thickness, conductors are solid copper busbar encased in rigid extruded PVC insulators, polarized connectors and endConnectors simply push into the ends of the track, eliminating splicing, straight, right angle, X's, T's and flexible connectors allow track to be assembled in almost any patternGrounding is accomplished through a grounding channel in the track, the track maintains continuity to the building's grounding system through the ground contact fingers in each of the connectorsTrack mountingAccepts both lazer track and Power-Trac™ luminaires