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The wire I found that is similar to the OGR wire was sold as 14-2 or 16-2 speaker wire.  It came with the two conductors in red and black, the same as the OGR wires, and with both inside a PVC outer jacket that was usually a different color but otherwise similar to the OGR cable.  You need to make sure the conductors are stranded copper and NOT CCA (copper covered aluminum).  I got mine at a big box store.  I see it is no longer available there, but you can google 14-2 or 16-2 speaker wire.  Longer lengths usually come in a "payout dispenser" box.  You'll see other kinds of wire but it is not hard to find the varieties that are similar to the OGR wire.

John H posted:

THHN  wire has very inflexible insulation. It works well in conduit and under layout runs, but not so well under track or tight spaces such as switch panels.

The 14 awg copper wire at the auto stores or big box store would be a better choice for flexibility. The THNN has a slick coating on it also for protection or less friction when pulling through a conduit which adds to the stiffness as well.

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OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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