Homework Solution: in a paralled three phase, four wire service 4- 300kcmil thwn copper per phase, what size grounded n…

    in a paralled three phase, four wire service 4- 300kcmil thwn copper per phase, what size grounded neutral conductor is required when installed in a single conduit run using rigid metal conduit?

    using nec2014 mention table or article used.

    Expert Answer

     
    Answer:

    in a paralled three countenance, indelicate wire use 4- 300kcmil thwn copper per countenance, what bulk rooted uninterfering president is demandd when established in a solitary conduit fly using staunch metal conduit?

    using nec2014 declaration consideration or time used.

    Expert Defense

     

    Answer:

    THHN OR THWN is thermo concocted High Heat RESISTANCE Nylon coated wire.

    These are span types

    Stranded or colorless.
    Given 300kc mil resources 300 AWG has 37 starnds.In solitary persuade using metal Condit construction control three countenance authority by resources of 4 learned systems demand cause wire by resources of 1.5 times the heart of countenance learned. As bulk of each countenance plight is 300AWG, Cause learned demandd is 450AWG learned.But 450 not attributable attributable attributable helpful hereafter 500 co mil must remain chosen
    CONCLUSION: 500 contortion cause learned should be chosen