Re: approved means
Look at Article 100 05' NEC "Approved" Yup! AHJ and That can be scarry. Ran a service call about 3 months ago and could not help but to notice 5 feet of "white pipe" stubbed up from grade to meter was 2" schedule 20 DWV Plumbing pipe. Recent service upgrade and was signed off and "Approved" by a local AHJ.