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Grounding Electrodes
Posted By: Dana
Date: Wednesday, 30 March 2011, at 5:01 a.m.
Some comments on an old subject?
Because my Transco manifold was setup that way, it came with a grounding electrode installed by default on the debris trap.
It connects directly to the ground, which I provided a dedicated dual 8’ copper electrode system connected with #6 wire.
I have never owned one without it, but it seems to me by having this sort of 'controlled flashback' it would prevent a possibly dangerous situation.
When the tube is first heated, there is an obvious arc stream to the electrode and as it is heated the stream begins to drop away.
I have never experienced a flashback situation and I am sure the grounding electrode is the reason.
Transco manifolds – they use KF fittings between major parts. This has proven to be one of the finest features of the unit. It makes it completely expandable with standard vacuum fittings. I imagine it added several dollars to the cost of the glasswork, but the serviceability is greater.
Connection of KF fittings is merely a channel-clamp that maintains slight pressure on an ‘O’ ring between ground-face parts so there is virtually no stress of compression on the parts.
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