2003 APRIL - Laserfiche WebLink

20.20.027 (4) Maximum Number of Discon- persons. Such a fuse in a photovolta- nects. The photovoltaic system is source circuit shall be capable of disconnecting means shall consist being disconnected independently of of not more than six switches or fuses in other photovoltaic source six circuit breakers mounted in a circuits. single enclosure, in a group of separate enclosures, or in or on a 690.17 Switch or Circuit Breaker. switchboard. The disconnecting means for un- (5) Grouping. The photovoltaic grounded conductors shall consist of system disconnecting means shall a manually operable switch(es) or be grouped with other disconnect- circuit breaker(s) complying with all ing means for the system to com- of the following requirements: ply with 690.14(C)(4). A pho- tovoltaic disconnecting means (1) Located where readily accessi- shall not be required at the pho- ble tovoltaic module or array location. (2) Externally operable without exposing the operator to contact 690.15 Disconnection of Photovoltaic with live parts Equipment. (3) Plainly indicating whether in the open or closed position Means shall be provided to discon- (4) Having an interrupting rating nect equipment, such as inverters, sufficient for the nominal circuit batteries, charge controllers, and the voltage and the current that is like, from all ungrounded conductors available at the line terminals of of all sources. If the equipment is the equipment energized from more than one source, the disconnecting means shall Where all terminals of the discon- be grouped and identified. necting means may be energized in A single disconnecting means in the open position, a warning sign accordance with 690.17 shall be shall be mounted on or adjacent to permitted for the combined ac output the disconnecting means. The sign of one or more inverters or ac mod- shall be clearly legible and have the ules in an interactive system. following words or equivalent: 690.16 Fuses. WARNING. ELECTRIC SHOCK HAZARD. Disconnecting means shall be provid- DO NOT TOUCH TERMINALS. ed to disconnect a fuse from all TERMINALS ON BOTH THE LINE sources of supply if the fuse is ever- AND LOAD SIDES MAY BE gized from both directions and is ENERGIZED IN THE OPEN accessible to other than qualified POSITION. 710-23 (Pleasanton April 2003)