Extending Irritrol RD-900 Transformer Power Cord—Wire Gauge Guide

Need to move RD-900 indoor controller 6-8 feet. Extend 24VAC transformer cord. Practical limit?

Safe Extension Method

1. Cut transformer cord 6" from transformer
2. Wire-nut 14-gauge (or heavier) stranded lamp cord
3. Run up to 20 feet with no voltage drop issues

Why 14 Gauge

Standard transformer cord is 18-20 gauge. 14 gauge handles 24VAC over 20' with minimal loss. Use wire nuts, not tape.