20amps current traces

Projects
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I just found one in digikey and after reading datasheet, I feel its suitable choice, please could you verify once friend, I have attached the link of it to this comment.
https://www.digikey.de/en/products/detail/phoenix-contact/1731468/4482655

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Well, datasheet says 400V, 24A so that should work. But with a pitch of 5mm itā€™s a bit narrow, especially because you also need a clearance around your tracks.

This thread now also has over 40 posts in about 3 hours. I think that should be enough for today.

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This is the last one, as we discussed earlier I will create a copper zone surrounding both the pins of this terminal, and connect the trace to it, and hence now pitch doesnā€™t matter right ?

44

As in pin pitch; the center-to-center spacing? It almost always matters.

Butā€¦one thing I wanted to mention in the other discussion. To help handle high current, imagine a jumper (like a staple) made of bare copper wire. It interconnects two through hole pads in a track that is handling high current. This can help to increase the total copper cross sectional area and the current handling capacity. You could use a few of these in parallel if needed.

As for ā€œbroā€; there are a few women on this forum. :slight_smile:

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One last but IMPORTANT caveat. You must design spacing for 250 VAC. There are special rules which I know exist but Iā€™ve never had the occasion to use them. This is a safety issue so I would guess its more important for your grade than overheating a trace.

2 Likes
46

You didnā€™t mention (that I saw) but I expect you are using one of the hall current sensors. You should look at the tech documents for said sensor and perhaps they have a recommended layout.

Wait a minuteā€¦

I see a burden resistor which suggests current is measured through a current transformer. If this is correct, why does the PCB have to carry 20A ?

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And this kind of Project thread is off topic for this forum . . . I know we all want to help but there are better sources out there.

1 Like
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