Here is a good read for Grounding -v- Bonding (Sorry its not one link, it was a series of articles last year) The website also has good electrical advice and tips. Just sharing what I’ve found. Happy Inspecting!
http://www.ecmweb.com/mag/electric_g…ing/index.html
http://www.ecmweb.com/mag/electric_g…g_2/index.html
http://www.ecmweb.com/mag/electric_g…g_3/index.html
http://www.ecmweb.com/mag/electric_g…g_4/index.html
http://www.ecmweb.com/mag/electric_g…g_5/index.html
http://www.ecmweb.com/mag/electric_g…g_6/index.html
http://www.ecmweb.com/mag/electric_g…g_7/index.html
http://www.ecmweb.com/mag/electric_g…g_8/index.html
http://www.ecmweb.com/mag/electric_g…g_9/index.html
http://www.ecmweb.com/mag/electric_g…_10/index.html
http://www.ecmweb.com/mag/electric_g…_11/index.html
http://www.ecmweb.com/mag/electric_g…_12/index.html