<img alt="" src="https://secure.redd7liod.com/155840.png" style="display:none;">

Latest Discussions

Reduce Your Combiner Box Expense by 25%

Value Engineering Combiner Boxes

You can save up to 25% on combiner boxes and DC disconnects switches if they are properly designed. It is well known that you size equipment for 1.56x of the short circuit current. However, with certain solar...

Continue Reading

Correct DC Disconnect Labels

Over the years, we have seen just about every combination of equations and numbers used to calculate the NEC required values on a DC disconnect switch. NEC requires these values to be calculated and shown on the DC disconnect switch, but it doesn't...

Continue Reading

Photo of the Week: Maintain Vegetation

Two things went wrong here. First, the vegetation was not maintained, allowing it to grow tall enough to shade the modules and cover the modules in lots of pollen. The second mistake is improper seeding. If the site has proper low-growing ground...

Continue Reading

Photo of the Week: Improper Raceway

This installer gets full points for creativity, but fails miserably for inappropriate construction means and methods. These cables are not protected from physical damage, and they are not outdoor rated so the UV rays will deteriorate the cables...

Continue Reading

Photo of the Week: Corrosion

NEMA 3R and 4 inverters and outdoor cabinets may be rated for outdoor use, but any scratches in the paint will expose the metal to rusting. Once the rust gets a foothold, it will quickly spread. In this case, the corrosion should be sanded, primed,...

Continue Reading

Photo of the Week: PVC Conduits

PVC conduits are acceptable when used properly (lots of expansion joints). Metallic conduits (EMC, IMC, RGS) are more expensive, but should be in areas subject to physical contact with other items (such as riser up walls, in electrical rooms, etc)....

Continue Reading

Now is the Time of Year For Solar Maintenance

Solar arrays are valuable revenue generating assets that require a certain amount of maintenance. How much exactly depends on what type of installation we are talking about (ground mount vs. roof mount), the size of the installation (obviously...

Continue Reading