Specification History
| SWS Version | Created | Specification ID | Title | Specification | Objective | Rationale | Status |
|---|---|---|---|---|---|---|---|
| Version 2025 | 05/15/2025 - 12:29 | 0.0501.1b | Design PV System | Design the size of PV system to serve the prescribed load Prepare electrical one line drawing Prepare layout drawings showing location and connections of all equipment Provide list (make, model) of all equipment Design PV system layout to provide safe access around PV modules as required by codes and standards, and required clearances around balance-of-system components such as inverter and switchgear Locate PV Modules to minimize shading factor and maximize solar gain, but not interfere with existing systems or appliance operation (e.g., chimneys, vents, exhaust terminations) Provide equipment specifications (electrical and physical specifications) of major equipment including PV modules, inverters, metering/monitoring, and other major system components. Specify inverter arrangement (central inverter, string inverter, micro-inverter, DC optimizer) and show all electrical connections on one-line diagram. Include in PV system design any upgrades required for utility meter and utility service to building. |
Maximize PV system performance |
The committee agrees that aligning all solar specifications is necessary to ensure consistency across installation types. This was done to streamline efforts, and reduce redundancy across both roof-mount and ground-mount solar installations resulting in one set of specifications that align with current standards. | Red Line |
| Version 2025 | 10/12/2023 - 15:53 | 0.0501.1b | Design PV System | Design the size of PV system to serve the prescribed load Prepare electrical one line drawing Prepare layout drawings showing location and connections of all equipment Provide list (make, model) of all equipment Design PV system layout to provide safe access around PV modules as required by codes and standards, and required clearances around balance-of-system components such as inverter and switchgear Locate PV Modules to minimize shading factor and maximize solar gain, but not interfere with existing systems or appliance operation (e.g., chimneys, vents, exhaust terminations) , basic_html |
Maximize PV system performance , basic_html |
Red Line | |
| Version 2025 | 10/12/2023 - 15:53 | 0.0501.1b | Design PV System | Design the size of PV system to serve the prescribed load Prepare electrical one line drawing Prepare layout drawings showing location and connections of all equipment Provide list (make, model) of all equipment Design PV system layout to provide safe access around PV modules as required by codes and standards, and required clearances around balance-of-system components such as inverter and switchgear Locate PV Modules to minimize shading factor and maximize solar gain, but not interfere with existing systems or appliance operation (e.g., chimneys, vents, exhaust terminations) , basic_html |
Maximize PV system performance , basic_html |
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| Version 2025 | 10/12/2023 - 15:53 | 0.0501.1b | Design PV System | Design the size of PV system to serve the prescribed load Prepare electrical one line drawing Prepare layout drawings showing location and connections of all equipment Provide list (make, model) of all equipment Design PV system layout to provide safe access around PV modules as required by codes and standards, and required clearances around balance-of-system components such as inverter and switchgear Locate PV Modules to minimize shading factor and maximize solar gain, but not interfere with existing systems or appliance operation (e.g., chimneys, vents, exhaust terminations) , basic_html |
Maximize PV system performance , basic_html |
Red Line | |
| Version 2025 | 10/12/2023 - 15:53 | 0.0501.1b | Design PV System | Design the size of PV system to serve the prescribed load. Prepare electrical one line drawing. Prepare layout drawings showing location and connections of all equipment. Provide list (make, model) of all equipment Design PV system layout to provide safe access around PV modules as required by codes and standards, and required clearances around balance-of-system components such as inverter and switchgear Locate PV Modules to minimize shading factor and maximize solar gain, but not interfere with existing systems or appliance operation (e.g., chimneys, vents, exhaust terminations) , basic_html |
Maximize PV system performance , basic_html |
Red Line |