The right cable tray splice plates and related connectors simplify organizing, protecting, and routing multiple cables in data centers, offices, and homes. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. A cable tray joint plate is a metal connector. It joins two sections of cable tray together. Think of it as a bridge that creates a continuous pathway for cables. Bolts and nuts pass through these holes to secure the connection. This article reviews five compatible options from trusted brands, highlighting their materials, compatibility, and installation benefits.