Electrical Wiring in the Home/house fuse
30 amp fuse blows when heater on why does all electric outlets go out at the same time
You should not have a 30 amp fuse for outlets. It probably should be 15. You run a real risk of causing a fire with 30 amp fuses.
Space heaters use up most of the capacity of a circuit. That means that there should be very little else on the same circuit. I do not like space heaters, because they generally are not safe.
It sounds like the wiring in your house is old and outdated.
Sorry to be the bearer of bad news.
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