Rick,

"Is a shutoff switch required for a batch type disposal?"

This is in the installation instructions for GE batch type disposers: "Turn the power switch (normally a wall switch) to the off position before attempting to clear a jam or remove an object from the disposer.", and this "When not operating a disposer, leave the drain stopper in place to reduce the risk of objects falling into the disposer."

Those two tell me that a wall switch (or other switch) is necessary for proper installation and operation of both types of disposers.

__________________
Jerry Peck, Construction / Litigation Consultant
Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )