Optional???? Why are we calling this optional?
NFPA 75 (If it applies in your area) notes exactly the same thing in section 10.4.7.
In annex A it gives a bit more info in A.8.1.2 about method of shutting down power, and in A.11.1 it states a written emergency plan be prepared and posted.
If you guys are not pushing the installation of EPO's I'd like to suggest you reconsider, if not for simple code compliance then for basic life safety.
UPS fed equipment can make your life very uncomfortable in an emergency, let's give 'em a way to cut it down on the way out the door, most people will do it.
