calculate rated current

Nov 05, 2009 1 Replies

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blaze 16 years ago

hello, i hope somene here can help me. let say i want to calculate max current through brass terminal block like this one:

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I understand that brass conductivity is 30% of coppers. But this profile hace wholes where wires come etc. How can u calculate what would the be the rated current?

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Tim Perry 16 years ago

I suspect there are too many variable to come up with an accurate calculation. For instance, is the block mounted to a chassis which will heat sink it or not? AC or DC? Determining contact resistance will be a problem.

If it was me I would just assume that I max was approximately equal to the I max of any one wire that will fit into it.

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