My First DIY Power Cable

In the assembly stage.  Is the Furutech FP-TCS21 a directional cable?  I see what looks like little arrows on the cable markings.  How much does that really matter?

Nevermind, Got the answer, it is directional.

Got the cable tested (continuity, short & voltage). Plugged it into AV amp to test. Then moved it to main rig and plugged into my amp. 10PM Sitting there listening and thinking look at me and my new ability and bang the entire house drops off the grid. I am thinking , did I just cause that?  I just went to bed by candle light. This was the action in my backyard and 4AM in drizzling rain.

Years back I provided to a few hundred A'goners cheap all-Teflon 13 and 11AWG power cable kits, and star-ground power boxes using the fireproof Belden 83000 series starquad iterations. Indeed, the included shielding was useless, but the fluorocarbon (Teflon) dielectric throughout was real.  If you want to make one yourself chase a length of 83754 (4x16AWG), connect it as 2x13 using nice Hubbel and WattGate-quality IEC and be mighty happy with the result.  These are only POWER cables...NOT signal cables. Don't get carried away with silly-priced connector jewelry. If you want a smaller cable (13AWG) for front end use use 83704 (4x14) instead. Both are better than the ubiquitous and cumbersome 83803 that should be relegated only for in-wall use as a dedicated 12AWG line for code purposes. Have fun.

I have a little experience with Viborg and it's not good.  I know we're talking about power cords here, but this says a lot about the company.

https://www.audioasylum.com/cgi/t.mpl?f=cables&m=181633