This clause provides requirements for the selection and erection of low-voltage and extra-low voltage
generating sets intended to supply, either continuously or occasionally, all or part of the installation.
Requirements are also included for installations with the following supply arrangements:
– supply to an installation which is not connected to a system for distribution of electricity to the public;
– supply to an installation as an alternative to a system for distribution of electricity to the public;
– supply to an installation in parallel with a system for distribution of electricity to the public supply;
– appropriate combinations of the above.
This part does not apply to self-contained items of extra-low voltage electrical equipment which
incorporate both the source of energy and the energy-using load and for which a specific product
standard exists that includes the requirements for electrical safety.
NOTE – Requirements of the electricity distributor should be ascertained before a generating set is installed in an installation that is
connected to a system for distribution of electricity to the public.