is this a fire hazard

Hi dude! I don't think you need to worry about fire even if you burn the fuse, cos the fuse is there to cut the electricity if there is too much power going through. I aint no electrician by any means but I can give SOME advice. First you should find the fuses (brakers how do you call it) and check the max amperage and which connects to where. You should have them all in one place and there should be pretty clear map (Depends what country etc but atleast thats pretty common). What is your countries voltage, 110V or 240V? It is a really simple math when counting these things. Power(W)=Voltage(V)*Current(A) and when you know your voltage in your house AND you know the fuse max amperage you can count the theoretical MAX power that can be pushed to that fuse. But even if you over do it the fuse will just brake or turn off (Depends if its older or newer ones)