Solar Articles

  • Solar Wire Management
One of the most important tasks when installing a PV system is wire management.  This task is sometimes overlooked by installers or not given enough attention. Installers that take their wire...
Support Article
8/11/2018
  • MPPT Algorithm
  1. Constant Voltage   Constant voltage maximum power point tracking was one of the first ever created algorithms and has the most limitations. Constant voltage MPPT simply measures the ambient...
Support Article
9/13/2017
  • Solectria
  The Problem Many inverters installed in the last 10+ years are now failing and are no longer protected by the original product warranty. With limited possibilities of extending warranty coverage,...
Support Article
6/13/2017
  • MPPT Charge Controllers
Selecting an efficient and properly designed charge controller is key to the longevity and efficiency of your entire battery-based photovoltaic (PV) system. By optimizing the power coming in from...
Support Article
6/4/2015
  NEC 2014: Article 690.12 “Rapid Shutdown of PV Systems on Buildings” There were several changes to the 2014 NEC code that affect PV systems.  Of these changes, the most notable is article 690...
Support Article
1/5/2015
  •  AC or DC Coupled
It seems like a small amount of confusion exists about photovoltaic systems utilizing battery backup features.  What’s the confusion?  DC and AC-coupled systems are many times referred to as the same...
Support Article
11/28/2014
  • Choosing the Right MPPT Solar Charge Controller
Inverter and Charge Controller - a delicate balance  In an Off-Grid or Hybrid (Grid-tied, with battery back-up) PV system, the Inverter is generally the heart of the system. Inverter size is...
Support Article
7/13/2012
  • Nationally Recognized Testing Laboratory, cec certification solar
NRTL certification means your solar panels and solar modules conform to safety, health, and environmental standards as required by: NEC, OSHA, and the National Fire Prevention Association. NRTL...
Support Article
9/22/2011
  • Battery Life and Performance Factors
There are multiple factors that significantly affect the life of a battery. I'll try to summarize the major issues related to battery performance: 1- Cyclic life The battery life is mainly determined...
Support Article
12/3/2010
The charge controller is a regulator which limits the rate of current that goes to and from the battery pack. Charge controllers are essential to prevent overcharging or completely draining a battery...
Support Article
7/7/2010