Polycarbonate splicer with cover for connection between transformer extension wire (i.e. Romex) and low voltage cable, or use as a splicer between two sections of low voltage cable. (maximum wattage allowed for 10/2 AWG: 300w at 12v; 500w at 24v max). UL and C-UL listed. The miniature wiring compartment can also be used as a junction box wiring hub for joining multiple luminaires and leading them back to your transformer. 25 AMP limit.