37609 LAUREL HAMMOCK DR - Laserfiche WebLink

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i � ,� 3 _ �� ,� - Exc�ption:In industrial and commercial buildings where conditions of maintenance and supervision ensure that on�ly qualified plersons will service the installation and the entire length of the inter-ior metal water pipe that is beang used for thel conductor is exposed. :CB��ary FPN: See Sectionsl�,547-8 and 547-9 for s ecial undin and bondin re wrements for a P � g g q ' gricultural buildings. I (a)Me �t.�al Undergrll'lund Water Pipe.A metal underground water pipe in direct conta.ct with the earth for 10 ft (3.05 m) or more(in i luding any metal well casing effechvely bonded to the pipe) and electrically continuous (or mad�`electricallylcontinuous by bonding around insulating joints or sections or insulating pipe) to the points , of conn�chon of the,grounding electrode conductor and the bonding conductors. :;c��ca� � � �� (1) Conl�inuity. Continuity of the grounding path or the bonding connection to interior piping shall not rely on , ,� water m�ters or filteizng devices and similar equipment.. � , ' ' � �fl (2) Supplemental EI i ctrode Required. A metal underground water pipe shall be supplemented by an ; addition�elecirode of a type specified in Sections 250-50 or 250-52. Where the supplemental electrode is a ' made elelctrode of the�lrod,pipe, or plate type, it shall comply with Section 25Q-56. The supplemental electrode shall be�ermitted to be bonded to the grounding electrode conductor,�the grounded service-entrance conductor, the nonfl�xible. ourid'ed service racewa or an ounded service enclosure.�� I �' Y� Y�' ((commeneary;� Except�'on: The sup I lemental elect�-ode shall be permitted to be bonded to the interior metal water pi�ing at any convenient point�lais cavered in Section 250-50, Exception. Where th I supplemerital electrode is a made electrode as in Section 250-52(c) or(d), that portion of the bonding jumper th�l t is the sole��connection to the supplemental grounding electrode shall not be required to be larger than No. 6 copper wire or i. 4 aluminum wire.;;�� � I , _. (b) Metal F�ame of the Building or Structure. The metal frame of the building or structure,.where effectively grounded. I I �I (c) Concrete-Encased�Electrode. An electrode encased by at least 2 in. (50.8 mm) of concrete,located within and near tlie bottom of�I concrete foundation or footing that is in direct contact with the earth, consisting of at least 20 ft(6.1 m) of one or more baze or zinc galvanized or other electrically conductive coated steel - reinforcing bars or rod'sl of not less than '/z-in. (12.7-mm) diameter, or consisting of at least 20 ft(6.1 m) of bare copper coiductor not smaller than No. 4. Reinforci.ng bars shall be permitted to be bonded together by the usual steel tie wues or other effective means.#c��e��y � (d) Groun�d Ring.A grl und ring encircling the building or structure, in direct contact with the earth at a depth below the iarth's surfac�l of not less than 2%z ft(762 mm), consisting of at least 20 ft(6.1 m) of baze copper conductor not smaller than No. 2.;,co,„n,e,uat+�, ��- 410 I57. Rece t�c�les in Dam or Wet Locations �� P I P (a)Damp I ocations.A�eceptacle installed outdoors in a location protected from the weather or in other damp locations shall have an �enclosure for the receptacle that is weatherproof when the receptacle is covered (attachment�plug cap notl inserted and receptacle covers closed). ' An installa�ton suitable for wet locations shall also be considered suitable for damp locations. � A receptacl i shall be considered to be in a location protected from the weather where located under roofed open �, � � � � - � I