Prime chiller that needs a replacement fuse. it is a 20amp 250volt fuse where can i fin...

You can normally purchase these fuses from many electronics and appliance stores, or through an online retailer. Here is one company online which you can purchase them from:

http://www.divinelighting.com/gma-15a-5-pcs-fastblow-fuse-15-amp-250v-gma15a-gma15-p-481.html

Hobbyists have also been able to purchase these fuses through local electronic stores like Fry' Electronics.