Paul Drahn wrote:



The transformer and oven are on their own 200 amp 208/3 meter. Each leg
has a 200 amp fuse right after the meter. They blow at about 201 amp!



The typical fuse curves for a 200A fuse would probably never reach
"minimum melt" at 201 A, at nominal temp, and would take several
hundred to several thousands of seconds at 300A.
For example an RK1 fuse
http://www.cooperindustries.com/cont...RK_70-600A.pdf
A 200A will melt in ~ 1000 seconds at 300A, 10 sec at ~1200A, and 1
sec at ~2200A.



jk