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HANDBOOK REQUIREMENTS - Central Maine Power Company

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50<br />

building or structure grounding electrode system. All grounding<br />

electrodes shall be bonded together. Electric equipment metal<br />

raceways and enclosures should be bonded to lightning<br />

protection conductors, or separated from lightning protection<br />

conductors in accordance with the “Standard for the Installation of<br />

Lightning Protection System,” NFPA 780. Separation from<br />

lightning protection conductors is typically 72 inches through air<br />

or 36 inches through wood or masonry. The ground connection<br />

from a television antenna for<br />

the purpose of lightning protection<br />

should<br />

be treated the same as a lightning rod ground.<br />

705. SERVICE SURGE PROTECTION<br />

Protection from lightning or power surges at the service<br />

entrance is the responsibility of the customer. NEC Article<br />

285<br />

governs the use of surge protective devices<br />

(SPD’s). Specific<br />

installation requirements for SPD’s (surge<br />

arresters or transient<br />

voltage surge suppressors, TVSS) can be found in NEC 285.23<br />

through 285.25. These devices shall not be installed in or on the<br />

meter enclosure or on the line side of any metering equipment,<br />

unless they are <strong>Company</strong> owned and maintained.

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