I have recently became a residential inspector and have questions on dates that GFCI progressed until current. I know that they started in the early 1970's. Any suggestions on how to research this?
That's an Adobe Acrobat PDF document. If you follow the link and nothing comes up, you'll probably need to get the Adobe Acrobat reader - free at www.adobe.com
That's an Adobe Acrobat PDF document. If you follow the link and nothing comes up, you'll probably need to get the Adobe Acrobat reader - free at www.adobe.com