Secondary winding centre tapped to earth protecting operator against earth fault potential greater than 55 Volts. Constructed generally to BS3535 specification. Full earth screen between primary & secondary windings. External casings moulded from flame retardant high impact (GRP). Transformer coils encapsulated in a fire proof epoxy resin. Fitted with a thermal safety cut out with external reset button. 240 Volt supply via 2 metre 1.5 or 2.5 mm artic blue flexible cable. Transformers come with a 16 Amp outlet & 5KVA with 16/32 Amp. Weatherproof.