The answer to 'surge protector gets hot' is that a surge protector getting hot is a sign of a problem and should be addressed. Potential causes include an overload on the surge protector, a faulty surge protector, or a problem with the electrical wiring. Symptoms may include the surge protector feeling hot to the touch, tripping the circuit breaker, or even emitting smoke or sparks.
If a surge protector is getting hot, it's best to unplug it immediately and stop using it. You should then inspect the surge protector and the electrical outlet it's plugged into for any signs of damage or overload. If the issue seems to be with the surge protector itself, it's best to replace it. However, if the outlet or wiring seems to be the problem, it's recommended to call a licensed electrician to diagnose and fix the issue.