Chris,
Douglas Brooks wrote an article about Preese's and Onderdonk's equations
for fusing currents of wires, which was published in Printed Circuit
Magazine.  It can be downloaded from UltraCAD's web site at
    http://www.ultracad.com/fusing.pdf

Appendix F of the book that I am writing for Kluwer, Robust Electronic
Design Reference, will cover the ampacity (current-carrying capacity) of
wires, printed circuit board traces, busbars, etc.  The manuscript is
due August 1st, so I had better get back to my writing...

                John Barnes KS4GL, PE, NCE, ESDC Eng, SM IEEE
                dBi Corporation
                http://www.dbicorporation.com/


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