Hi Jeff, Sorry I did not offer this earlier, but I expected you would have more and better response from others.
I have not direct agency experience with this issue, but while visiting Germany some time ago, I discussed with a TUV engineer his experience with certifying a "tankless" waterheater which had mains electrode in the water line flow (wet) above a domestic shower head. Ohmic heating of the water was the goal, much like some early humidifiers (which needed salt added to the water to do the job). There were redundant "collector" rings which offered the return and safety earth paths below the mains electrode. I was told that TUV went all over Germany sampling water for conductivity for test purposes, and found that there was no hazard, even in single fault conditions. I was & am impressed with the idea, but not yet impressed enough to experiment with it. This is very anectodal, but I hope it helps that there appears to have been a precedent. Mike Harris Teccom Co. [email protected] 707-258-1360/fax 1361 --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
