CT104-5SWLHQ meter socket replaces AB100 Series for 120/240V services, above 200A, that require current transformers. Compact unit - smaller footprint than standard CT104 Series. Conductor range: 14-10 AWG. Transformer-rated - 20A, 600V maximum Suitable for 120/240 V single-phase service entrance. Hydro-Québec-approved test switch included. Units are pre-wired from base to test switch. Lower test switch compartment cover securely held by upper cover and a catch at bottom. Weatherproof Type 3R enclosure. Designed and manufactured to Hydro-Québec specifications in Saint-Jean-sur-Richelieu, Quebec.