Why Fuse Panel Is Not Working. If you’re lucky, your electric fuse box will have little labels under each switch telling you which circuit they manage e.g. For example, if the main fuse is rated at 100a, with 10 feeders fused at 20a each, they could all be loaded to 10a to 15a.
You can be sure the fuse has blown if the warning light does not illuminate. I am not sure how to check the back of the central junction box. The microwave powers on but won’t work;
