i feel that several good points have been made here, 1 is does 2" pvc when used as a "holder" for hydroponics lines need to be installed to code? i would think not what part of that is an electrical installation? so the nec or a permit or even the licensing of the installer is N/A. but ...and theres always a but-usually me [Linked Image]- in the picture i would think so (atleast in my area) due to the fact all of article 800 is now required to be inspected, have even seen inspectors go back after really bad installations that were done on the sly in a school, and make them be repaired to code. if something is listed and labeled for an open surface install then it would be ok to do that (workman like manner not withheld) or the use of conduit for protection from damage or to penetrate firewall or something to the like , my wondering is where do you draw the line of workman like manner. it sure wouldnt pass in my book but i have seen much worse work that others have been very proud of, yes proud to the point of bragging. and i cringed and wanted to point out the problems but the only one was workman like manner , and sometiomes that is the most dangerous violation.IMHO ok i will get off my soapbox now [Linked Image]