in my application should work 24/7 with Wi-Fi constantly transmitting data and all USB ports are busy. in this installation in a hot country (Israel) even with radiators, if it gets very hot, and in the event of a fault even hot to the touch! in my setup i had to install it without a case and cool it with a fan, i also connected my usb devices to a powered hub and it reduces the current draw from the rpi and helps against overheating.
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