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Faston Ampacity
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Charybdis:
Hi there, I'm running on a project to update my car lights.
I'm planning to run 17 Amp through a 2,5 sq mm (13 AWG) PVC insulated and I'm looking for the proper connectors.
I've take a look on TE catalogues as well our italian leaders manufacturers such as Cembre and MTA.
So the question is this: how many Amp can a blue 6,35mm faston (.250 series) safely handle ?
Thank you so much :)
wraper:
Look into datasheet for particular connector. They use different materials and are rated for different current.
Charybdis:
The problem is that usually that is NOT a parameter listed  |O |O |O
floobydust:
VDE limits 1/4" Faston to 20A and I have seen up to 40A in automotive parts but I find 25A is reasonable. At 30A up things are pretty hot. It should be fine for headlights or fog lights at 20A.

Every connection has resistance and will make heat, the datasheet spec is missing because it depends on how much heat you can get rid of. If the connector is under the hood near the engine, at a relay pin, or is wrapped in insulation (tape, wire loom etc.) it will get hotter and the wire melts.

Cheap chinese crimp connectors have very thin metal, so be careful to not use them for high currents.

13AWG is pretty stiff to use and it can tug and bend the Faston, with vibration. Blue is 14-16 ga. I would try the yellow ones.
Fastons are terrible to make waterproof, so I use Deutsch or Delphi/Packard connectors.
wraper:

--- Quote from: Charybdis on March 21, 2019, 06:14:07 pm ---The problem is that usually that is NOT a parameter listed  |O |O |O

--- End quote ---
For example TE lists rated current for every variant. It depends on connector material and intended wire gauge of particular connector. 17A with 2,5mm2 is just about what you can get with good quality connector. If there is no data with rated current, it's not a connector you should buy.
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