This study examines important but often disregarded safety compliance in the planning and integration of photovoltaic (PV) electrical systems. Although many studies have been conducted on PV design, integration, and techno-economic analysis, there is still a gap in emphasizing adherence to national electrical codes. This study suggests a three-pronged strategy for efficient PV implementation: (1) meticulously structured system design with capacity analysis, (2) customized equipment selection based on the design, and (3) safety prioritization via strict adherence to national electrical regulations. This study supports careful photovoltaic (PV) system design and capacity analysis guided by the selected roof location and made easier using programs such as PVsyst, SketchUp, Skelion plugin, and AutoCad. The National Electrical Code was followed throughout the design process and in all electrical equipment selection processes to guarantee the safety and sustainability of the electrical creation. This study investigated a number of important criteria to do this (load calculations, fault calculations, system size, wire selection, grid interconnection safety compliance, and hot bus compliance). This all-inclusive approach provides normative PV design verification standards and significantly improves electrical safety, thereby laying a strong basis for future studies.