... appliances. Versatile For Use in *Shops, homes, restaurants, offices, factories (single phase), etc. Technical Parameters *Voltage Range: 90 - 250 Vac, 50Hz ... 50,000 watts Installation Procedure *Plug this device into a wall socket, not an extension cord or multiple socket and switch ... lighting, etc.) 2012 new model design Business-type Power Saver with 24KW Useful Load/Single Phase 50KW Energy Saver