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2025SU ELC-119-02BL NEC Calculations
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The total Cross-sectional area of the conductors installed in an 18 inch conduit nipple should not exceed ______________ of the total cross-sectional area of the conduit nipple.
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What is the correction factor for an Aluminum conductor type SIS when installed in a 140-degree F ambient room?
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Circuit conductors shall be permitted to connected in parallel (electrically joined at both ends) only in sizes _____ and larger were installed in accordance with 310.(G)(2) through (G)(6).
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Each of twenty (20) current-carrying, single insulated, type THW, #1/0 copper conductors in a raceway installed in an ambient temperature of 60 degrees C would have a maximum allowable ampacity of:
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The following conductors are to be installed in a raceway:Ten (10) #8 THWThree (3) #10 THHNFour (4) #6 THWNIf a rigid metal conduit is used, it would need to be sized at:
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A trade size 2-1/2, Rigid Metal Conduit (RMC) contains (6) six, size 3/0 AWG, type THHN compact aluminum conductors. How many more 3/0 AWG, type THHN aluminum compact conductors can be added?
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NEC 334.80 requires that NM cables that are bundled together and pass through wood framing members and are fire-caulked, the allowable ampacity of each conductor must be adjusted. What would be the adjusted ampacity of the individual conductors of Five #12-2 wg NM cables?
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An 6 AWG conductor with type THWN insulation has an insulation thickness of:
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A metal wire way contains 20 current carrying conductors. What is the maximum allowed number of conductors that can be added without having to adjust the allowable ampacity of the conductors?
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A trade size "1" Rigid PVC conduit schedule 80 has several conductors installed with a total cross-sectional area of 0.189 sq. in. How many size 12 AWG type THWN-2 copper conductors can be added?
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