ORD 1869 - Laserfiche WebLink

(B) Disconnection of Conductors. The ungrounded con- ductors of the faulted source circuit shall be automatically disconnected. If the grounded conductors of the faulted source circuit are disconnected to comply with the require- ments of 690.5(A), all conductors of the faulted source circuit shall be opened automatically and simultaneously. Opening the grounded conductor of the array or opening the faulted sections of the array shall be permitted to inter- rapt the ground-fault current path. (C) Labels and Markings. Labels and markings shall be applied near the ground-fault indicator at a visible location, stating that, if a ground fault is indicated, the normally grounded conductors may be energized and ungrounded. 690.6 Alternating-Current Modules. (A) Photovoltaic Source Circuits. The requirements of Article 690 pertaining to photovoltaic source circuits shall not apply to ac modules. The photovoltaic source circuit, conductors, and inverters shall be considered as internal wiring of an ac module. (B) Inverter Output Circuit. The output of an ac module shall be considered an inverter output circuit. (C) Disconnecting Means. A single disconnecting means, in accordance with 690.15 and 690.17, shall be permitted for the combined ac output of one or more ac modules. Additionally, each ac module in a multiple ac-module sys- tem shall be provided with a connector, bolted, or terminal type disconnecting means. (D) Ground-Fault Detection. Alternating-current-module systems shall be permitted to use a single detection device to detect only ac ground faults and to disable the array by removing ac power to the ac module(s). (E) Over current Protection. The output circuits of ac modules shall be permitted to have over current protection and conductor sizing in accordance with 240.5(B)(2). II. Circuit Requirements 67