Wire Size

[irishpatrick33]

Forgive me if this is ridiculous.

I am choosing wire size for a build. I would like a heavy gauge wire. However, the size I am considering just barely makes it through the pcb hole. It is as tight as it gets. Would this be a problem? Should I scale back so there is a good bit of solder between wire and pad? Thanks

 

[U230421]

Is it possible to scale up the size of the pcb hole a bit?
If not due to the size of the pad and the track, it is not fit for such a more heavy wire and current flowing through it at all.

 

[JMFahey]

IF wire fits through a hole, any solder it takes will be fine.

In any case, you question is quite vague, we really need to know:

* hole diameter
* wire size/section
* current through said wire

 

[Enzo]

And perhaps WHY you are set on heavy wire.

A three inch wire carrying signal from point A to point B really won't benefit from larger wire.

 

[indianajo]

Internal amp wiring 28 ga is fine the currents are under 250 ma.
Driver emitter to output transistor base one needs 24 ga the currents can be 5 A. 18 ga would be more generous.
Output transistor emitters to speaker jack, 18 ga minimum, generous is 14 ga. If only one output transistor 70 w amp 24 ga will work.

 

[irishpatrick33]

It’s just 18awg wire. However, the pcb hole just barely fits it. The build is 24v but I don’t know how much current.