Dedicated AC line - Contractor wants to use BX instead of romex


I’m having a dedicated in wall AC cable run, about 40-50 ft. I was planning on using VH audio cryo’d 10-2 Romex but the contractor wants to use BX since it’s an urban area and more impervious to mice, etc.

Any thoughts on this?

Also I was planning on wiring the end of the run with an 20 Amp IEC connector so I could plug it directly into my Niagara 7000. I don’t know if they will wire it this way but I thought I could always do that myself later.
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Before you get into an argument with your contractor you might want to look up the code in your area for what is required to pass inspection. Example in Chicago area almost all electrical wire must be contained in conduit. If there is no code restriction tell him or her what you want and if they won’t go elsewhere.
If you're going to run a dedicated run for power, I'd suggest investing in a good hospital grade outlet at the very least (superior clamping force on the contact area of the plug's pins).

I bought a Puritan PSM156 power cleanser, with close to 1KW of power amp, linear power supply and other items connected, I get no loss in dynamics using it. Thanks to Agon user who put me onto it. Oh, and it was one of the less expensive solutions.



Everything has pros & cons.  Romex and you are stuck with what you installed without opening up the walls.  BX & you have the same.  Use 3/4" flex and there is room to pull more wire through any time in the future.  Even a sub panel.  Almost future proof.  

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Look at page 16. Read pages 31 thru 36.
https://centralindianaaes.files.wordpress.com/2012/09/indy-aes-2012-seminar-w-notes-v1-0.pdf



I would argue many should read all of this ... about 15 times!  Maybe something will sink it. Worst case, they may give more though to their purchases.


One thing from this presentation is why lots of separate runs are a bad idea as they likely also have separate runs for the ground. That is a good way to induce more voltage difference between grounds. Do a heavy gauge run to a small sub-panel and plug everything in there.