Precautions for Safe Use A wire of more than 10 m to 25 m : One rank higher wire size A wire of more than 25 m to 50 m : Two ranks higher wire size For the 3G3AX-RBU42 model, keep the wiring length between the Regenerative Braking Unit and Braking Resistor within 5 m. „ Maintenance and Inspection Be sure to confirm safety before conducting maintenance, inspection or parts replacement. 11