Resistor Grid EMD LOCO (0.5 - 3.5 Ohms) ALCO LOCO (0.5 - 3.5 Ohms) Dynamic Braking Grid The Dynamic Braking Grid is designed on the basis of the horse power of the locomotive EMD Grid Box - EMD Part No. 10634216 & 10634215 ALCO Grid Box - DLW Part No.: EL/PT/0631