A potential costumer has asked if I could disconnect a commercial generator. It was backing up a data rm., now not in use, the tenant is no longer there. There is a 600 amp breaker in generator, and a 1200 amp breaker feeding ATS less then 25' away it says generator test switch on it also is in same electrical rm. I wanted to know if just disconnecting the generator outside at the disconnect remove the conductors, controls and the 120v for the diesel oil heater,if that is that whats done in some cases. just get that removal inspected or does the whole system need to be removed? I have about the same email ready to send to the inspector. just wanted to know what was known here. Thanks for your help.