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:...�.: ._..... ..� - - - .., � . . .. ........ _. .. - — — — -- - . <br /> �. Wara I�L,.mradur;og <br /> � � � 117 Gulick S4 <br /> �. Blossbucg.PA 169t2 <br /> � • TeL•(570)638-2131 <br /> count the steps you F�vw wardfler coroo <br /> save with WARDFLEX. <br /> Technical Bulletin: #16 <br /> Electrical Bonding and Grounding <br /> In accordance with NFPA 70 National Elcctrical Codc(NEC),proper bonding and gnounding of gas-piping <br /> systems in a structurc and the structwe's elcctrical system is required by a qualificd electrician. The <br /> requirement providcs un effectivic eloctricatly conlinuvus path in an cfCort to conduct stray voltage%ument <br /> snfely to ground. "Thc NEC also states that it is good practice to bond all metallic systetns und objects. In <br /> accordance with thesc requirements,WARDFLEX�'requires the gas-piping system to be bondod to the <br /> elech-ical earth grounding�ystcm of the swcture thmugh the use of a bonding clamp and wire. <br /> • The bonding point must be in as close proximity to thc cicetrical panel as practical;close pt+oximity of <br /> the bonding point to the gas meter is also desirable. <br /> • The wire gauge for this bond must bc sizcd,at a minimum,for the full amperage available through the <br /> cicctric scrvicc. <br /> • Further minimiZing imEwd�nce over the txmding assembly is desirnble. The NEC should be referred to <br /> for additional requirements nnd specific techniques for bonding�u►d�-ounding. <br /> Por attachment to thc WARDFLFJC'D gas <br /> piping system,txmding clamps must bc 60NDING W�R � <br /> attached to the WARDFI,E?C°D brass fitting,to � <br /> a steel manifold,or to a rigid pipe component <br /> c:onnuctcxl to a WARDFLEX'1°fitting. The � <br /> corrugated stainless stecl poriion of thc gas r, <br /> piping system shull not bc used as the bonding N_ <br /> . <br /> 8It8C�lII1CIlt pOint uRdef Blly CIICU1i1St971C8. WARDFtEX TU61NG <br /> The WARDFLF_X�flexible gas piping or � <br /> other gas system components shall not be uscxl <br /> as a grounding elech-ode or as the grounding <br /> path for appliances or electrical systems. doNoiNc e�nMP <br /> {ON fITTING,NOT TU61NG) <br /> Bonding and grounding requirements are nlso CSST FITTING <br /> contained in NFPA 54 National Fuel Gas <br /> Code. NFPA 54 specifically requires: <br /> "...each above ground por[io�t oJa gas piprng system which is li�fely 10 become eitergized shall be <br /> electrically continuous and boitded to o designed,permanent,low impedance e,(fective ground <br /> jault current path." <br /> Proper grounding and bonding may rrduce the risl:of damage and fire from a lightning strike. Lightning is <br /> a hi�hly destructive force. Even a nearby lightning strike that docs not stril:e a structure directly can cause <br /> systems in the structure to bacome energized. If the systems t�re not properly bonded,the difference in <br /> potential between the systems may cause the charge to arc to another system. Arcing can cause d�age to <br /> CSS'f. }ionding and gmunding as set forth aixrve should rexiucc the risl:of arcing and related damage. <br /> Dcpending upon conditions specific to thc location of the structure in which the WARDFLEX�system is <br /> being installed,includin�but not limited to whethet or not lhe area is prone to lighh�ing,the�w��of thc <br /> structure should consider whether or not u ligh�ing protection system is necessary or uppropriate. <br /> Lightning protection systems are beyond the scope of lhis bulletin,but are covered by I•IFpA 780 tvhich is <br /> the Standard for the Installation of Lightning Protection Systems,and other standards. <br /> Released On: 11/1/06 <br /> Scanned by CamScanner <br />