Energy efficiency is compromised by undersizing wire.
In my commercial contracts, based upon the ultimate economics, it is routine for the specs to demand upsized conductors.
Whereas the CODE is fire safety oriented officialdom is realizing that such a thrust is a wrong.
That in the public-economic interest best practices should become mandates. And that just because you can load a conductor below burning down the dielectric does NOT mean that it is wise for anyone.
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I expect ever more Title 24 authority to extend and extend until we are mandated to install ONLY best practices - whatever that may be at such time.
