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Engineering, 03.12.2021 17:20 stressedstudent1906

twenty-five feet of bare 4 AWG copper that is laid in the grade beam within a poured building slab ___ permitted to be used as a grounding electrode for a separately derived system or a service

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twenty-five feet of bare 4 AWG copper that is laid in the grade beam within a poured building slab _...
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