Covering a wide range of applications, the Lex BNB2-3B takes a 30 Amp feed and distributes the power to to three (3) NEMA 5-20, 20 Amp duplex receptacles for cameras, lights, effects, audio equipment and tools and more. Its feed thru feature allows multiple boxes to be placed along the same power feed. Perfect for video production trailers, OB vans and similar outside production work.