http://ecmweb.com/news/electric_specifying_right_fuse/
http://thefusecompany.net/ClassH.htm
http://www.relectric.com/Catalog/Fuses/Bussmann/Fuses/Time--lag/fAtt2/fAtt3/fAtt4

Here are some links. I can tell you the fuse case on the renewable make great drill bit holders for the tool pouch. Rod