What does FEDR stand for?

Feeder

Also called "riser", it is part of the gating system that forms the reservoir of molten metal necessary to compensate for losses due to shrinkage as the metal solidifies. Also called ?Riser?, it is part of the gating system that forms the reservoir of molten metal necessary to compensate for losses due to shrinkage as the metal solidifies. A three phase distribution line circuit used as a source to other three phase and single phase circuits.