DIY Helix, many recipes, mine uses three or four strands of VH Audio Airlock for hot wire. I've either owned or auditioned tons of PC's in range of $1k-$5k, DIY Helix now the only pc I use in all important equipment.
I'd assume gauge of cable is the critical factor in differentiating high current to lesser current pc. I do change amount of hot strands in my DIY Helix, always min. 12 gauge for neutral and grounds, vary between 11 and 13 gauge for hot.
