Is this Square D Type TIPO 50-amp 2-pole breaker double tapped?

Yes, it looks to be double tapped. Those particular breakers don’t appear to be designed for 2 wires, altough the breakers above it are.

Here’s another thread on the issue. Double-tapped Square D - Specific Inspection Topics / Electrical Inspections - InterNACHI®️ Forum

8 Likes