The PV junction box: An overlooked, yet important part of a solar panel

The junction box is often an overlooked piece of the solar panel. Usually pre-installed on the backside of a solar module, installers pay it little mind until connecting panels. The PV junction box has a simple, but important role: housing all the electric bits on a solar panel and protecting them from the environment. Wires

Install the wire box before the string inverter

Contractors can install string inverters with integrated, but separable, wire boxes more efficiently by installing the wire box first and then focusing on the inverters. Employing the appropriate skilled workers to align all wire boxes is essential to quickly complete DC and AC wire termination and connection. Once the wire boxes are in, less-skilled, lower-cost

Upcoming 2017 changes for solar labeling

This article is reposted with permission from Graphic Products. See the original blog here.  When solar labeling first surfaced around 1980, there were no set standards. Over time, the National Electrical Code (NEC) included solar systems and labeling in its standard, which started with the 1984 edition, with the most current revision being the 2017

What are the National Electrical Code fire safety requirements for PV arrays?

The safety conversation involving rooftop solar has largely been influenced by the NFPA and others responsible for developing nationally recognized codes and standards. First responders are worried about dangerous current running through a solar array when responding to a building fire. The 2014 edition of the National Electrical Code (NEC) requires rapid shutdown for roof-mounted

A solar farm’s balance of plant also needs O&M attention

By Judah Moseson, PE CEM, vice president of operations, Cooke Power Services The balance of plant (BOP) is the most important link for delivering power produced by a solar farm to the marketplace. The BOP consists of the pad-mount transformer at the exit of the inverter through to the collection system and substation. The BOP

Keep NEC codes in mind when choosing combiner box for next solar project

The combiner box plays a key role in a PV system. It consolidates the PV string source circuits into one or two output circuits to be passed onto the power conversion system for inverting into AC and, in some systems, charging batteries. Combiner boxes also contain source circuit overcurrent protection devices required for safe system

SolarBOS features wire harness and rapid shutdown products at PV conference in Boston

SolarBOS, a developer and manufacturer for BoS products in solar, is excited to return to Boston, MA, where the 2016 Solar Power PV Conference & Expo will be held on February 24th and 25th. The company will be in booth 418. Attendees will have the opportunity to see SolarBOS’ Wire Harness Solutions and Rapid Shutdown

1,500-volt systems to account for 4.6 GW of global utility-scale solar in 2016

The utility solar PV market is in the beginning stages of a major technology shift. While most utility solar installations today use 1,000-volt components, GTM Research anticipates an imminent transition to 1,500-volt PV systems. According to its latest report, 1,500-Volt PV Systems and Components 2016-2020: Costs, Vendors and Forecasts, 1,500-volt systems will make up 9

SnapNrack introduces a junction box and trunk cable clamp

SnapNrack, a manufacturer of solar panel mounting solutions, has announced a new Junction Box and Trunk Cable Clamp, which will further enhance the company’s wire management solutions that reduce solar installation times and lower installations costs. The SnapNrack UL-listed Junction Box saves installation time and cost over current solutions while improving safety and reliability over

What is a combiner box?

The combiner box’s role is to bring the output of several solar strings together. Daniel Sherwood, director of product management at SolarBOS, explained that each string conductor lands on a fuse terminal and the output of the fused inputs are combined onto a single conductor that connects the box to the inverter. “This is a combiner