This BSEN 61010 compliant mains coil when used with the current version of the Dissectible Transformer (B8H26564) and Induction Accessories Set (B8H26606) provides the necessary power for the nail melting and Thomson's rings demonstrations.Technical Specification:Input Voltage: 230V a.c. (max)Number of Turns: 1000Impedance: 13.5ΩCurrent: 1A (max)Dimensions of Central Aperture: 40mm x 40mmOverall Height: 70mmAssociated Products:Dissectible Transformer - B8H26564Induction Accessory Kit - B8H26606