Tunnel type connectors for both load and line sides. For underground service only. Meter compartment cover overlaps lower test switch compartment cover; insertion of meter securely holds upper cover in place by means of a catch. Lower test switch compartment cover securely held by upper cover and a catch at bottom. A removable mounting bridge is provided for fastening test switch. Supplied with screw type ring. Comes with compartment for test switch. 8 jaw. BC Hydro approved with SWL cover with enlarged pad hole.