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690.10 Stand-Alone Systems is hereby amended and shall read as follows:
The premises wiring system shall be adequate to meet the requirements of this Code for a similar installation connected to a service. The wiring on the supply side of the building or structure disconnecting means shall comply with this Code except as modified by 690.10(A) through (D).
(A) Inverter Output. The ac output from a stand-alone inverter(s) shall be permitted to supply ac power to the building or structure disconnecting means at current levels less than the calculated load connected to that disconnect. The inverter output rating or the rating of an alternate energy source for dwellings less than 1000square feet shall be equal to or greater than 50% of the load as calculated by NEC 220.40 General.
The calculated load of a feeder or service shall not be less than the sum of the loads on the branch circuits supplied, as determined by Part II of this article, after any applicable demand factors permitted by Part III or IV or required by Part V have been applied.
For all other dwellings NEC 220.40 shall apply
For non-dwellings the calculated load shall be equal to or greater than the load posed by the largest single utilization equipment connected to the system.
(B) Sizing and Protection is not amended.
(C) Single 120-Volt Supply is not amended.
(D) Energy Storage or Backup Power System Requirements is amended and shall read as follows: Energy storage or backup power supplies are not required except for dwellings.
(E) Back-Fed Circuit Breakers is not amended.
(Ord. 99-61 (part); Ord. 007-04 (part); prior code Title VII § 1-1; chapter 11.12 repealed and replaced Ord. 030-10)
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