New PV system owners will have until the end of 2019 to qualify for the full 30% Investment Tax Credit (ITC) before its inevitable step-down. The clock is ticking! The ITC is the most impactful...
Most electricians and solar installers across the country are intimately familiar with the National Electric Code (NEC). Published every three years by the National Fire Protection Association (NFPA...
Online reviews are the new form of marketing currency for solar installers. Once a homeowner or business is approached by a solar salesperson, one of their first actions will be to Google the...
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...
While there is a lot of excitement about solar energy, it can, and often does, take a long time to educate a customer on why they should actually invest in “going solar.” The good news is that taking...
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,...
When designing a PV system that is tilted or ground mounted, determining the appropriate spacing between each row can be troublesome or a downright migraine in the making. However, it is important...
For many new to photovoltaic system design, determining the maximum number of modules per series string can seem straight forward, right? Simply divide the inverter’s maximum system voltage rating...
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...
A supply side tap is a connection that is made to the busbars or conductors on the line or utility side of the main service disconnect. The line side tap the simplest way of interconnection when...
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...
Introduction As one of the largest and most established vertically integrated photovoltaic (PV) manufacturers on the planet, SolarWorld is intimately involved with every...
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...