Low Voltage Outdoor Lighting Transformer 12v 150w suitable for use with low voltage garden lighting circuit. Contains watertight connectors. Using the 150 watt transformer you are advised to start with a SPT-3W main cable, or with an extension cable 10 meter SPT-3 or a cable divider. This 150W transformer can be used in conjunction with all plug & play lights. (The total Wattage of these lights cannot exceed 149W). The transformer comes with a water tight screw connector and is IP44 (suitable for outdoor use) approved.