"The Sirius 110v Portable Transformer 3.3kVa is ideal for tradesmen working on site when using portable electric tools. The weatherproof case is GRP IP44 rated to withstand harsh conditions of site use. Featuring a re-settable thermal overload protection and is fitted with BS approved 13-amp plug. The transformer has 2 x 16-amp 110-volt sockets. The sockets are not suitable for 110v heaters where a continuous load is required.