> Turns out, I need a 3A fuse, so I ordered one from Amazon and installed it the next day.
Ummm. 3A is 720W. If that tiny box dissipated that much, the entire closet full of them would be a literal oven. Besides there's not much point in an energy meter using that much power. It defeats the purpose. It's like testing matches :P it'll be 10W at most. Even peak inrush current would be nowhere near that high.
1A fuse would be more than enough.
> To be honest, the whole thing was a bit scary, since I was very close to the mains.
Ummm. 3A is 720W. If that tiny box dissipated that much, the entire closet full of them would be a literal oven. Besides there's not much point in an energy meter using that much power. It defeats the purpose. It's like testing matches :P it'll be 10W at most. Even peak inrush current would be nowhere near that high.
1A fuse would be more than enough.
> To be honest, the whole thing was a bit scary, since I was very close to the mains.
Nah this is all installed very cleanly.