480.2 Definitions.
Code Change Summary: Several new definitions were added to Article 480 for storage Batteries.
According to the NEC® style manual, terms used in more than one Article of the NEC® are placed in Article 100. Terms used only in one Article are defined at the beginning of that specific Article.
Many of the new terms appearing in 2014 NEC® Article 480 are the result of the NEC® DC Task Force and the IEEE Stationary Battery Codes Working Group. These new definitions are the collaborative effort of battery manufacturers, users, integrators, installers, engineers and other battery stakeholders who desire accuracy in the NEC®.
Below is a preview of the NEC®. See the actual NEC® text at NFPA.ORG for the complete code section. Once there, click on the “free access” tab and select the applicable year of NFPA 70 (National Electrical code).
2014 Code Language:
480.2 Definitions.
Cell. The basic electrochemical unit, characterized by an anode and a cathode, used to receive, store, and deliver electrical energy.
Container. A vessel that holds the plates, electrolyte, and other elements of a single unit in a battery.
Electrolyte. The medium that provides the ion transport mechanism between the positive and negative electrodes of a cell.
Intercell Connector. An electrically conductive bar or cable used to connect adjacent cells.
Intertier Connector. An electrical conductor used to connect two cells on different tiers of the same rack or different shelves of the same rack.
Nominal Voltage (Battery or Cell). The value assigned to a cell or battery of a given voltage class for the purpose of convenient designation. The operating voltage of the cell or battery may vary above or below this value.
Terminal. That part of a cell, container, or battery to which an external connection is made (commonly identified as post, pillar, pole, or terminal post).