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Connecting Parallel Transformer Primaries with Faston Connectors
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grbk:

--- Quote from: rdl on March 09, 2019, 10:04:56 pm ---Since this is a one-off project, I vote for #2. Twist and crimp the two wires together in the same connector.

As a matter of fact, I believe I did nearly the same thing for a power supply I built over 10 years ago. I'd have to open it up and look to be sure though.

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--- Quote from: David Hess on March 10, 2019, 04:57:36 pm ---If you do not want to solder, then I would use #2 and crimp two leads into a single connector maintaining an insulated connection.  I do not understand why you think this is dubious.

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I appreciate the input; this is probably the easiest option and I guess it isn't as sketchy as I think. My reluctance comes from a lot of time spent debugging poorly constructed race car wiring harnesses, and after that experience I get nervous with anything other than a single-conductor-per-crimp (soldered connections and substandard tooling give me nightmares!).

But after receiving these replies, I spent some time re-reading NASA workmanship standards (the gold standard as far as I'm concerned) and crimping multiple wires into a single terminal is explicitly allowed (my memory was the opposite). Given that my application is vastly less demanding than aerospace or even motorsport, I agree my concern's probably misplaced :).


--- Quote from: Gregg on March 10, 2019, 06:05:17 pm ---Another solution might be to use ring terminals with a small machine screw and cover the junction with heat shrink. Then the transformer can be removed at a later date and still have usable terminals attached.   
Ring terminals back to back nest quite nicely especially uninsulated ones; you often can remove the insulation from the ones with the colored plastic sleeves.
(snip)

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I've done this before and it worked quite well.
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