mediatechnology wrote: ↑Sun Feb 04, 2018 2:02 pm
The Accutronics reverb springs sort of fell into place. The top ring is coupled to the bottom one by a section of spring behind the turret.
This ties all four sections together bringing them to equal potential. The top spring rides on the ball always seeking the smallest-available diameter.
The bottom spring rides on the groove. The faucet can be turned and operated normally and the springs ride along.
I now measure 0 mV between the bottom 3 sections. The top sometimes shows 1-2 mV from the base which could be improved by cleaning the bottom ridge of the handle.
The studs underneath are grounded by a clip lead but the base floats from that. The bottom gasket insulates the base from everything below it.
There is about 300 nA DC current from the faucet to earth ground.
What needs to happen is to loosen the whole faucet, slip a small drain strap underneath it and then tighten the whole thing down.
Ground that to third wire at the disposal.
We break new ground here at the Pro Audio Design Forum.
EDIT: Forgot to mention the most trippy part: When water is not flowing the faucet is negative with respect to earth ground. When the water is turned on, the polarity reverses. No, this is not April Fools.
I think I have some proof this is working.
To begin with I haven't seen or felt any pitting in the sink arm or seen calcium build-up in the joints between sections.
While cleaning I noticed that the tiny brass coupler between Accutronics spring sections had almost disintegrated.
The springs are stainless steel.
The brass coupling ring is at the top two sections where the adjustable handle arm meets the fixed ball.
The brass ring is needed when the spring is used in a reverb - it serves no purpose here.
Modern Accutronics springs use a tiny brass eyelet.
The old style, like this one used a tiny brass ring.
That ring had almost corroded.
It looks like the potential difference and current flow between sections is being successfully shunted by the springs enough to set up galvanic corrosion at the union of dissimilar metals in the spring itself.
With the ring gone the springs still stay hooked and are then stainless-to-stainless.
I think this provides some proof that there's been a diversion of current.
Previously the faucet was pulling metal off itself and into another section.
That doesn't appear to be happening now.
Interesting post#8 here:
https://www.iccsafe.org/forum/electrica ... l-bonding/