normal EEG's does not rule out epilepsy. In fact I think it is almost 50% of people will have a normal EEG, as brain activity causing epilepsy only occurs when having an actual seizure. My daughters EEG's have always been normal, yet she has epilepsy for over 6 years.
I've had epilepsy for 25 years and I've had an EEG every year and only 3 showed that I had epilepsy and that was because I was having episodes of various seizures while having the EEG, so yes you can have epilepsy with a normal eeg
Epilepsy is largely a clinical diagnosis and a persons EEG may be normal between seizures. The behaviour a person exhibits during a seizure is the best way a specialist can diagnose a seizure disorder so if you can get a video recording of a seizure then that is so helpful