Re: straping
I am not sure of when the practice of being 'unprofessional', lazy or whatever one calls it started, but it seems to be an accepted practice and by some not looked at as a bad thing.
Such as securing electrical wiring to some other trades work.
It is unknown to me why the plumber can secure his pipe and the electrician cannot seem to find a method other than the plumbers to secure the wiring.
The hangers for the gas, plumbing or whatever are listed, designed for that purpose and not to support however many electrical wires and even sometimes I have seen Emt secured to it. One job we could not even see the gas pipe, we were called in to remove the cables, because the gas pipe hangers pulled out of the ceiling from the weight of the electric cables.
I am convinced that this is a result of uneducated and lazy practice, and there is no other way of saying this!!!
Staple it, stap it, hang it and show some pride! The ones that say to me it is too expensive or the job can't cover the expense of doing it correctly get NO sympathy from me.
For those who use just the NEC for installation guidance, remember there are other documents that can help in the installation process. One is the UL White Book. One thing you can bet on is that plumbing pipe and hangers are not listed for electrical support.
Pierre