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Illustrated Changes to the NEC, 2002 Edition - Part 2

Article 690

Solar Photovoltaic Systems

690.14 Additional Provisions

A new subsection was added and it reads:

(C) Requirements for Disconnecting Means. Means must be provided to disconnect all conductors in a building or other structure from the photovoltaic system conductors in accordance with the following: Figure 690-2

(1) Location.
The photovoltaic disconnecting means must be installed at a readily accessible location either outside of a building or structure or inside nearest the point of entrance of the system conductors. The photovoltaic system disconnecting means cannot be installed in bathrooms.

(2) Marking.
Each photovoltaic system disconnecting means must be permanently marked to identify it as a photovoltaic system disconnect.

(3) Suitable for Use.
Each photovoltaic system disconnecting means must be suitable for the prevailing conditions. Equipment installed in hazardous (classified) locations must comply with the requirements of Articles 500 through 517.

(4) Maximum Number of Disconnects.
The photovoltaic system disconnecting means must consist of not more than six switches or six circuit breakers mounted in a single enclosure, in a group of separate enclosures, or in or on a switchboard.
Intent: The new subsection clarifies that the disconnecting means for the PV system must comply with similar requirements contained in Article 230 for services.

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