220 V AC, 60 Hz (Philippine household supply)

Typical homes in the Philippines use 220 V single-phase AC at 60 Hz for appliances and outlets. Your inverter’s AC output should match this so motors and timers behave as expected. The battery stack in this calculator is 12/24/48 V DC—that is separate from the AC voltage at your panel.

Mounts and hardware (typhoon-conscious practice)

Use proper rail, L-foot, mid-clamp, and end-clamp assemblies sized for your roof and module layout. Stainless fasteners (e.g. 304-grade) are common where corrosion is a concern. Wind load depends on site and structure—your installer should confirm engineering for your exact location, not a generic number from this page.

Grid connection and net metering

If you plan to connect to the grid or apply for net metering with your distribution utility (e.g. Meralco in many areas), paperwork and equipment approvals are handled through your installer and the utility. This calculator does not certify grid-tie or export approval—always follow your DU and local rules.