In Episode 28 of “EC&M On Air,” we're bringing to you one of our most popular EC&M Asks Q&A video series in an audio-only format. It features subject matter expert Randy Barnett, who addresses some of our readers’ most pressing questions about all things grounding and bonding, including whether or not the main grounding electrode conductor can be spliced, 3-pole vs. 4-pole automatic transfer switch grounding and separately derived systems, grounding diesel engine driven backup generator as compared to natural gas generators, and understanding auxiliary electrodes.