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Re: To ground or not to ground?



Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>



Be sure the bottom of the sec coil attaches only to the external ground rod via a 4-6 AWG fine standed welding cable (RF currents like the fine multiple conductors). Use a standard 6-8 ft copper ground rod and drive it in for 2-3 ft. Then, pull it out of the hole a dump a tablespoon of common table salt down the hole. Put it back in the hole and then drive it all the way in. The salt dispurses and helps to expand the actual ground area via ion migration.

Also make up a hash filter --- 2 inch ID shedule 40 PVC water pipe x 18 inches long closewound with #12 AWG house wiring. Fill the tubes with 1/8th inch steel rods and epoxy or silicone into place. Leave extra 1 inch each end for mounting off the case with short plastic rod (20 inch overall).

Dr. Resonance



Original poster: "Dirk Stubbs" <dirk@xxxxxxxxxxxxxx>

I have a question regarding grounding of my TC components. I am wiring up my power supply box which contains a variac, emi filter, and overcurrent protection. It will supply power to my NST and spark gap fan. Some of the components in the power supply require a ground such as the EMI filter(10VR6), MOV's, and even my variac housing(would be nice). What ground do I use in my power supply? My house ground or my RF ground? I know not to use the house ground for my RF ground. Does this also apply for grounding in my power supply box?

I looked in my NEC under article 250 but found nothing about grounding Tesla Coils or their power supply circuits. ;)

Thanks,
Dirk