9 Scientific apparatus and instruments; apparatus, instruments and computer software for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus, instruments and computer software for adjusting or controlling power usage or electrical load; devices and equipment that consume electrical power, including electrical appliances, machinery and plant, and which incorporate apparatus, instruments and/or computer software for the purpose of adjusting or controlling power usage or electrical load; apparatus, instruments and computer software for monitoring, managing and/or responding to fluctuations in the supply of electricity; parts and fittings for the aforesaid goods