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Question:

220V city electricity heating copper or burn out?

220V city electricity heating copper or burn out?

Answer:

If you don't know the thickness of the PCB copper foil you are using, it is recommended that the width should not be less than 5mm and the surface is covered with copper wire.
Generally PCB copper foil thickness will not exceed 0.03---0.1mm, according to the cross-sectional area of 30A/ square meters, 10A cross-sectional area should not be less than 0.3 square millimeters, then the corresponding width is 10-3mm.
To reinforce the copper foil or to reinforce it directly with copper wire.

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