Solar CAD Detailing – Procedure
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inputs
A typical set of inputs we need from the client includes:
⦿ Hand sketch/Photograph of targeted roof along with the existing protuberances and shading
⦿ Scaling factor of the above image
⦿ Brand, model number and submittals of the panel to be used
⦿ Rafter arrangement with spacing
⦿ Locations of existing utility meter
PROCEDURE
Locate the building and obtain the image of the building using Google Earth.
⦿ Place the panel on the roof plan with the identified slope by avoiding protuberances and shadows of objects.
⦿ Show the attachments and mounts of the panel to the rafters.
⦿ Plot the electrical connections to the panel with the cable to be used and the junction box.
⦿ Plot the inter-connections to the support elements, inverter and solar power meter.
⦿ Prepare a single line diagram of panel arrays with the associated electrical elements and appropriate cables.
DELIVERABLES
Using the given template, we prepare a set of pdf sheets as deliverables embedding the following:
Site plan & vicinity map
⦿ Google Earth 3D image of the building, panel location on roof, make, model and number of solar panels with dimensions
Roof plan & panel connection details
⦿ Arrangement of rafters
⦿ Panel support attachments
⦿ Electrical connection between panels, with solar power meters & junction boxes
⦿ Roof & panel area, roof & panel slope, roof & panel dimensions
Roof attachment details & electrical equipment location
⦿ Elevation of the building showing the solar power & utility meters along with other protuberances that are present
Electrical line diagram
⦿ Electrical single-line diagram depicting the connections between all electrical elements
Specifications
⦿ Specifications of panels, inverter, solar power meters, cables, panels
⦿ NEC code of the state in which the building is located