New Joint Guard Protection System dynamically indicates proper joint tension through color for easy installation and maintenance. Lighter Weight mean faster installation than with other busway and lower installed cost that cable and conduit. Field-adjustable isolation joint allows for " per joint providing flexibility on the job-site. Plug-assist allows for faster, easier installation of plugs which provide power to downstream devices. Exclusive Bluecoat Epoxy Insulation provides the industry's longest insulation life of 50++ years. Eart h-Bond I ntegral Ho using Gr ound provid es a lower resistance ground path than internal ground bars. Aluminum Housing with Sandwich Design-GE was the first to break the weight barrier with an aluminum housing that is up to 50PERC lighter than other Busway. DC Applications. 21RG SL PLUG QMR 4WG 30