2
\$\begingroup\$

I have an enclosure containing an earth ground line. It has a brass earth ground bus that is connected to:

  • the input earth pin of a 120V single-phase mains IEC320-C14 connector
  • the output earth pin of a 120V single-phase NEMA 5-15R connector
  • earth terminal for a self-contained SMPS with a metal case

The enclosure is ABS, so I haven't bothered to ground it.

I'm considering adding another ground connection from the bus to an L717SDE09P DSUB9 connector. The connector shell is tin-plated steel. It has "grounding indents" which I assume are the indents on the exterior (pin) side of the shell.

Currently I'm considering running a copper stranded wire from the earth bus to something in the ring crimp category. The ring would sit on the interior of the enclosure between a washer and a nut on one of the DB9 shell's jack screws. Is this a viable approach? Is there anything I'm missing?

\$\endgroup\$
2
\$\begingroup\$

It is a good idea to ground DSUB connector shells. See here for a first hand account of what might happen if they are not: What is the "ground strap" on a D-SUB connector for?

A ring crimp connector on the jack screws that connects to a wire going to the ground bus should work just fine. In fact, I did almost the exact same thing on one of my projects and have had no problems.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.