An auxiliary drain pan must overhang the equipment it protects by how many inches?

The correct answer is that an auxiliary drain pan must overhang the equipment it protects by 1.5 inches. This overhang is critical because it ensures that any condensate or water that might leak from the equipment is effectively guided into the drain pan and does not create a risk of water damage or mold growth in the surrounding area. The 1.5-inch overhang provides a sufficient margin to capture any potential leaks, protecting both the structure and the equipment itself. Adhering to this standard ensures compliance with best practices in HVAC installation and maintenance, aimed at minimizing water-related issues.