Hal Yeager's Solar-Electroc Home
          Hal Yeager's Solar-Electric Home

Construction Pictures

The Support rails go down first.

 
 
The rails are built upon support mounts, which comprise a post anchored to a roof
rafter and a flashing.  The flashing has been spray painted with an epoxy paint.
Before painting, the flashing was cleaned with detergent and vinegar to remove the
grease film.  A rubber boot at the top of the flashing structure forms a seal around the post. 

 
 
After the solar panels are put down, a main junction box is anchored to an end panel.  The main junction panel collects the voltage from the panels (in this case a combined total of 450 to 550 VDC) and routes it through a conduit, which runs down the roof and onto a side of the house.

 
 
The conduit runs down the east facing roof facet, and carries 450 to 550 VDC.

 
 
A flashing unit is used to route the conduit through the roof and to a side of the house.

 
 
At the side of the house, the conduit is routed into a DC disconnect box (gray color), and then onto the input of the DC-AC Inverter (red box).  The output of the Inverter is routed into the main utility box and is connected to the mains through two circuit breakers.  I would have liked to have the inverter right next to the breaker box, but local building codes prohibit it from being located under the gas meter, which is between the inverter and the breaker box.

 
 
Here is a view of the Inverter, an "Sunny Boy 2500" from the German company
SMA Regelsysteme GmbH. (Will open in another window).
(Download Specifications, will open in another window)