I’ve spent the last few hours looking through existing forums to get an answer to this question, and if I missed it apologies for recreating a thread and wasting everyone’s time.
I am looking to run several NM (12-2 and 14-2) wires in my attic the entire length of the house. I am trying to do everything to code both for safety and for inspection. I so far have learned (from a previous thread) that I must “support AND secure” the wires every 4 and 1/2 feet but I do not see anything regarding what means of securing these wires is acceptable.
Since there will be several wires I want to find the most efficient approach while still being safe. What I would ideally like to do is use these mounting wire ties (http://www.homedepot.com/p/8-in-UV-Mounting-Tie-Black-100-Pack-GTM-200STCB/203531917) which have an eyelet on the end. So the base question is, is this an acceptable method as apposed to using wire staples?
My next concern which I caught onto from yet another previous forum was the heat generation issues when bundling wires together. Currently none of the runs in my attic are secured until they break out and go parallel to the joists (I have an 1970’s home). I would hate to inadvertently make a fire hazard while trying to ironically make my installation more secure than the existing. What is the maximum number of 12-2 and 14-2 wires that can safely be bundled together, and can/should I mix them.
Any help is greatly appreciated.