The fuse is about the same diameter as a normal 13amp apliance fuse. In this case it has a white body with metal ends and is mounted on a board above the incoming mains cable.

it should have the value stamped on the ends.13a is a little high for 800watt go with 8-10amp fuse,why did the fuse blow to start with?a 13amp fuse for a 1200watt microwave.use an continuity ohm meter to check the fuses that have white in the middle,since you can't visibly check them.hope this helped.please rate my answer.

it should have the value stamped on the ends.13a is a little high for 800watt go with 8-10amp fuse,why did the fuse blow to start with?a 13amp fuse for a 1200watt microwave.use an continuity ohm meter to check the fuses that have white in the middle,since you can't visibly check them.hope this helped.please rate my answer.

Thanks very much. I gatherd it would not be 13 amp as the plug is fused at 13 amp. I have no knowledge why it blew. I just opened the door and power went.