NEC wouldn't apply to telecommunications/low voltage. You may think yellow is common because of single mode fiber. Gray is far more common in the field in/on buildings. OSP is usually orange, because orange is the color for telecommunications/phone/internet. Gas plants use yellow markers/tracer.
On Thu, Dec 5, 2024 at 4:42 PM Gary Buhrmaster <[email protected]> wrote: > On Thu, Dec 5, 2024 at 8:15 PM William Herrin <[email protected]> wrote: > > > As others have noted: conduit is smarter. Communication cable > > standards remain in a state of flux much more rapid than the lifetime > > of a house and the little blue one-inch conduits are not exceptionally > > expensive. > > And electricians (and the inspectors) understand > ENT(*) and it's installation requirements (yes > it still has physical securing requirements, > such as securing it near the box, and at > regular intervals along its run). > > All in all, for a new construction, I would > require it all to be in ENT. But, of course, > a builder looks only at the lowest cost(s), > as (probably) 98% of the buyers only look > at how pretty the stainless steel appliances > look like in the kitchen (surprise, surprise, > those participating on the list are not the > normal house purchaser). > > Gary > > > (*) Commonly called smurf tubing due to a > manufacturer's choice of blue, but it does > come in other colors, and I think technically > communications are supposed to be yellow > per the most recent NFPA 70 (aka NEC), > but I am absolutely too lazy to review the > latest regulations. >
