What tank uses NR-R-NR wires anymore? Those wires were deisigned for top coil tanks where the legs had a long walk to the 510. In most bottom coil tanks, the leg length is too tiny to make much of a difference.
I have a bundle laying here somewhere, and once in a blue moon, I get the urge to build my Ithaka tank... that's the only tank I use those wires on... I even used to hand splice wires before buying the welded wires.
All of that is to say you probably don't need NR-N-NR and could get away with straight 28...
What coil?
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