It is crucial to understand that the issue is caused by the transformer, not the NUBE device. This can happen due to two reasons: 1. Leaving the "HOT" switch on increases the voltage required for the unit to operate, causing the transformer to overheat and activate its protection. Please verify that the "HOT" switch is off. The other reason is that multiple outlets may be sharing the same circuit breaker in the electrical panel, causing the line to overheat and triggering the transformer's protection. Check if you have recently installed any other electronic devices in your home and ensure that the NUBE device and any other high-power appliances are connected to separate circuit breakers.