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HVAC School on X: "The main difference between the 3-wire and 4-wire condensing fan motor configuration is the use of the brown-and-white wire (or lack thereof). You can watch a brief video
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Brown Wire, Blue Wire and Green Stripe Wire-what are these? Which is black and hot and which is white?
THHN 14 AWG Stranded White w/ Brown Stripe Copper Building Wire 500 FT Reel Order by the foot - 500 FT Minimum | Steiner Electric Company
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Sumitomo Wiring Systems AVS0.75f spool 30m roll brown, white stripe /AVS075f-30-BRWH - hi-1000ec.com
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