Grounding electrodes shall be installed in accordance with
250.52 at the location of all ground- and pole-mounted
photovoltaic arrays and as close as practicable to the loca-
tion of roof-mounted photovoltaic arrays. The electrodes
shall be connected directly to the array frame(s) or struc-
ture. The dc grounding electrode conductor shall be sized
according to 250.166. Additional electrodes are not permit-
ted to be used as a substitute for equipment bonding or
equipment grounding conductor requirements.
The structure of a ground- or pole-mounted photovoltaic array shall be permitted to be considered a grounding electrode if it meets the requirements of 250.52. Roof- mounted photovoltaic arrays shall be permitted to use the metal frame of a building or structure if the requirements of 250.52(A)(2) are met.

Exception No. J: Array grounding electrode(s) shall not be required where the load served by the array is integral with the array.

Exception No. 2: Additional array grounding electrode(s) shall not be required if located within 6ft of the premises wiring electrode.

690.48 Continuity of Equipment Grounding Systems. Where the removal of equipment disconnects the bonding connection between the grounding electrode conductor and exposed conducting surfaces in the photovoltaic source or output circuit equipment, a bonding jumper shall be installed while the equipment is removed.

690.49 Continuity of Photovoltaic Source and Output Circuit Grounded Conductors. Where the removal of the utility-interactive inverter or other equipment disconnects the bonding connection between the grounding electrode conductor and the photovoltaic source and/or photovoltaic output circuit grounded conductor, a bonding jumper shall be installed to maintain the system grounding while the inverter or other equipment is removed.

690.50 Equipment Bonding Jumpers. Equipment bond- ing jumpers, if used, shall comply with 250.120(C).

VI. Marking

690.51 Modules. Modules shall be marked with identification of terminals or leads as to polarity, maximum overcur-rent device rating for module protection, and with the following ratings:

(1) Open-circuit voltage

(2) Operating voltage

(3) Maximum permissible system voltage

(4) Operating current

(5) Short-circuit current

(6) Maximum power

690.52 Alternating-Current Photovoltaic Modules.

Alternating-current modules shall be marked with identification of terminals or leads and with identification of the following ratings:

(1) Nominal operating ac voltage

(2) Nominal operating ac frequency

(3) Maximum ac power

(4) Maximum ac current

(5) Maximum overcurrent device rating for ac module protection

690.53 Direct-Current Photovoltaic Power Source. A

permanent label for the direct-current photovoltaic power source indicating items (1) through (5) shall be provided by the installer at the photovoltaic disconnecting means:

(1) Rated maximum power-point current (2) Rated maximum power-point voltage (3) Maximum system voltage

FPN to (3): See 690.7(A) for maximum photovoltaic system voltage.
(4) Short-circuit current
FPN to (4): See 690.8(A) for calculation of maximum circuit current.
(5) Maximum rated output current of the charge controller
(if installed)
FPN: Reflecting systems used for irradiance enhancement may result in increased levels of output current and power.

690.54 Interactive System Point of Interconnection. All interactive system(s) points of interconnection with

other sources shall be marked at an accessible location
at the disconnecting means as a power source and with
the rated ac output