hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Still using NEC 2014 not at NEC 2017 yet. Read and saw youtube videos that nearby lightning strike current may be traveling in low impedance path from rooftop solar aux electrode to bldg electrode via EGC. NEC 2014 690.14(d) refers to solar array aux electodes shall be installed in accordance with NEC 250.54. Why cannot one use the exception to aux electrode of nec 2014 250.54 earth shall not be used as effective ground fault current path to not install or discourage aux electrode solar array rooftop since low impedance path maybe created when lightning or I am not interpreting that correctly?
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