T&B Conduit Fittings

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T&B Conduit FittingsRigid and Intermediate Metal Conduit FittingsMethods of Bonding and Grounding (continued)Case 4: Where threaded conduitterminates into a threadless opening ina sheet metal box or enclosure withconcentric or eccentric rings remainingaround knockout.Methods of bonding for under or over250-volts, for service equipment and forhazardous locations where applicable.Note: Bonding jumper required by CECRule 10-806¨Threaded rigid metal conduit orintermediate metal conduit¤ T&B Series 142 Locknuts¬ T&B Series 122 Bushing, MetallicT&B Series 3650 Bonding WedgeT&B Series 3870 Bonding &Grounding Bushing2 T&B Typical Mechanical or PressureType FittingNote: For raintight applications, a sealingring, T&B Series 5302, may be usedbetween outside of box or enclosure andthe outside locknut.50
Methods of Bonding and Grounding (continued)—Typical Installation Using Bonding and Grounding BushingsT&B Conduit FittingsRigid and Intermediate Metal Conduit FittingsBonding Service Equipment(CEC Rule 10-604)Install Bonding Jumper to Assure Electrical ContinuityBetween Isolated Sections of Raceways (CEC Rule 10-610)Bonding required by CEC Rule 10-604Bonding Method per CEC Rule 10-806LOAD SIDEOF SERVICEEQUIPMENTBonding required by CEC Rule 10-606Bonding Method per CEC Rule 10-806Bonding jumper required byCEC Rule 10-606CEC Rule 10-806Multiple Bonding of Service Raceways WhereService Entrance Conductors are Paralleled inTwo or More Raceways, CEC Rule 10-614(i)(ii)Installing bonding jumper around unpunched concentricor eccentric knockouts in sheet metal box or enclosure[CEC Rule 10-806].Installing bonding jumper in hazardous locations where‘locknut bushing’ or ‘double locknut’ type of contact isunacceptable method for bonding purposes[CEC Rule 18-132 or 18-182][CEC Rule 18-226 or 18-276][CEC Rule 18-328 or 18-378]BUS BARSERVICEENCLOSUREGROUND BUSSERVICE CONDUITS1 T&B Series 142 Locknut2 T&B Series 3870 Bonding & Grounding Bushing(Threaded)3 T&B Series 5262 Sealing “O” Ring4 T&B Typical Bolted or Pressure LugSuggested SpecificationsInsulated grounding and bonding bushing (Series 3870)Where code requires bonding and grounding of single ormultiple metal conduits, or positive bonding and grounding ofmetal conduit to the box, enclosure or auxiliary gutter, the endof the conduit shall be equipped with an insulated metallicgrounding and bonding bushing such as Series 3870manufactured by Thomas & Betts.Grounding and bonding bushings used shall be approved forthe purpose and(i) Shall be of malleable iron/steel/aluminum constructionadequately protected against corrosion.(ii) Bushing insulator shall be listed or certified for150°C/302°F application with a flammability rating of94V-O. Insulator must be positively locked in place.51
Page 1: T&B Conduit FittingsTable of Conten
Page 4 and 5: T&B Conduit FittingsGeneral Informa
Page 6 and 7: T&B Conduit FittingsRigid Metal Con
Page 12 and 13: T&B Conduit FittingsRigid and Inter
Page 14 and 15: ttT&B Conduit FittingsRigid and Int
Page 54 and 55: T&B Conduit FittingsElectrical Meta
Page 56 and 57: T&B Conduit FittingsElectrical Meta
Page 58 and 59: T&B Conduit FittingsEMT FittingsSho
Page 60 and 61: T&B Conduit FittingsFlexible Cord a
Page 78 and 79: T&B Conduit FittingsPortable Cord a
Page 80 and 81: T&B Conduit FittingsPortable Cord a
Page 82 and 83: T&B Conduit FittingsService Entranc
Page 84 and 85: T&B Conduit FittingsService Entranc
Page 86 and 87: T&B Conduit FittingsLiquidtight Fle
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T&B Conduit FittingsLiquidtight Fle
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T&B Conduit FittingsArmoured Cable
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T&B Conduit FittingsNonmetallic She
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Type LTT&B Conduit FittingsLiquatit
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T&B Conduit FittingsLiquatite ® Fl
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Type CEA—Non-Halogen, Low Smoke,
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Type ZHLA—Non-Halogen, Low Smoke,
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Corrlok ® System—Type CLFR, Low
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Flexible Metal Conduit (Extract fro
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T&B Conduit FittingsConduit—Chemi
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T&B Conduit FittingsConduit—Chemi
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Alphanumeric IndexCatalogue Page Ca
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Notes175
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