UL - 1062 BULLETIN
UL Standard for Safety Unit Substations
|Publication Date:||4 April 2014|
These requirements cover unit substations of 1000 kVA single phase and 3000 kVA 3-phase maximum having a maximum nominal primary or secondary rating of 600 volts. Their construction, installation, and use are intended to be in accordance with the National Electrical Code, ANSI/NFPA 70.