Terminal block questions

Everyone,

I am assembling my first av bay in a decade and have some questions. Please see attached pic...

Are these terminal blocks reliable? My worry is vibration loosening the screws and causing a broken connection. My thought was to use lock washers and ring terminals with any wires.

Any ideas? Would like to not learn lessons the hard way if someone else already has and I can learn fro the experience.

Thanks in advance!

Dustin

No experience with them, but they look okay to me. The big concern with terminal blocks is that they are designed to fit the gauge of wire you're using. Can't tell from the pic, but are they designed for 20 - 22 gauge? If the wire well is too big, even if they are tightened all the way down, wires can come loose.

I've been using these, but I think I would go with the 10A next time.

I love these because there are no screws! I have had no failures in 3+ years of use.

https://www.digikey.com/products/en?mpart=HA0470500000G&v=1818

Dugway said:

I love these because there are no screws! I have had no failures in 3+ years of use.

https://www.digikey.com/products/en?mpart=HA0470500000G&v=1818

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I'll look into those and see if there's a wire to wire version, that's the application here...

Thanks John and Dugway!

Never heard of vibrations from a single launch causing the problem you describe, but if you use lock washers and ring terminals, you can pretty much assure yourself of a secure connection.

jmmome said:

Never heard of vibrations from a single launch causing the problem you describe, but if you use lock washers and ring terminals, you can pretty much assure yourself of a secure connection.

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Good to know. This was purely conjecture on my part, no actual experience to back it up.

I have absolutely used those "barrier terminal strips" on av-bays without any problem. Permanent connections from the altimeters with crimped ring terminals, and then e-match bare wires on the other side. They're big, but simple, and sometimes simple is good.

Everyone's got a different favorite, of course. Lately I've switched to smaller Euro terminals *with* wire protectors (that's a little tab that the screw pushes against the wire, rather than having the screw directly on the wire).

Mark

markjos said:

Permanent connections from the altimeters with crimped ring terminals, and then e-match bare wires on the other side.

Mark

Click to expand...

That's the exact plan I came up with actually, sounds good. Thanks!