Burndy BISR-250 Ground Rods and Grounding Systems

Burndy BISR-250 is a two-port inline splice reducer that connects and reduces conductors in a single compact unit, supporting a run/main conductor range from 10 AWG up to 250 kcmil for either copper or aluminum. The unit features an aluminum body (Al6061-T6) wrapped in a clear plastisol insulation, with an oxide-inhibitor pre-installed to resist moisture and contaminants and to provide visual confirmation that the conductor is properly inserted. Rated for up to 600 V and 90°C, it requires torquing to 275 in-lb, uses a 5/16 in hex drive, and specifies a 1-3/16 in wire strip length for proper termination; the overall length is about 41 inches with a 1.19 in width and 2.1 in height. This two-port splice reducer is UL 486B listed and designed to handle aluminum or copper conductors in run/main circuits, delivering a reliable, field-terminable transition in industrial power distribution applications.