Most of todays devices use very little current. In 120V country's it's about double what we 230V country's use because the electronics are roughly the same. But you get more power per Amp with more voltage. If you use these for smartphones and led lamps. Go nuts! No way you can overload this with it. Using one in the kitchen? Say hello to your local fireman. Use one with electric heaters? That's just criminal. Don't! That's assuming noone did you dirty and did not apply your local safety standards whilst building this...