This video covers the basics of power flow from PV modules to the grid. Learn how electricity is generated at the module level, how voltage is managed and increased, and the role of key components like inverters, transformers, and switchgear. A clear, foundational overview for anyone new to solar energy or looking to strengthen their understanding of how solar power reaches the grid.

From military service to clean energy careers. This video speaks directly to veterans looking for their next mission. Learn how skills built in uniform translate into clean energy roles, how serving with purpose continues after service, and how to build a meaningful career powering the future.

At Fluke, we're asked about the best practices when it comes to installing and testing PV systems. Learn more about using Fluke tools in the solar industry. https://bit.ly/3C90NG1 Typically on an installation, you'll have several connections. You'll have your inverter connections, your combiner box connections. Best practice is to make sure that all of this is tight, connected, and your wire management is secure, that nothing can fall out. Best practices to have a technician using a clamp meter to make sure that you're not overloaded. So, having the essential tool like a clamp meter, or a high voltage clamp meter, to make sure that the strings for the inverter are not overloaded. It's important to use the right tools with the right cat ratings. Also, make sure you have the proper PPE gear on, which is your personal protective equipment. Good tools are essential on the job and also to ensure technicians go safely home to their families when their jobs are done.

The modern world depends on electricity. It’s a crucial resource, especially in urban areas, but electricity can’t be created, stored, and provided at a later time. The instant it’s produced, it’s used no matter how far apart the producer is from the user. And the infrastructure that makes all this possible is one of humanity’s most important and fascinating engineering achievements: the power grid. -Patreon: http://patreon.com/PracticalEngineering -Website: http://practical.engineering Writing/Editing/Production: Grady Hillhouse Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License Source: https://www.youtube.com/watch?v=U6fBPdu8w9U This video is sponsored by NordVPN.

The utility-scale solar segment installed 7.6 GWdc in Q2 2024 - a whopping 59% jump from last year, according to SEIA's latest Solar Market Insight Report. If you're one of the newer folks joining in the industry to help get solar projects online, welcome! It may be helpful to dive into something fundamental to getting more solar energy onto the grid and that’s how electricity actually flows through these massive PV systems. Understanding this process is crucial for solar professionals regardless of their role in the industry. In this excerpt from Utility-Scale Solar PV Fundamentals, HeatSpring instructor Andy Nyce breaks down the journey of electrons from sunlight to high-voltage transmission lines. Want to dive deeper? Check out Andy's Utility-Scale Solar Essentials course bundle. It's packed with foundational concepts and practical insights that'll give you a serious edge in the utility-scale solar segment. - https://www.heatspring.com/courses/utility-scale-solar-essentials

This step-by-step guide will show you how to pull an oil sample from your transformer. For more information on transformer maintenance visit: https://www.maddoxtransformer.com/news/should-i-repair-or-replace-my-transformer *For educational purposes only, should be performed by qualified professionals* To pull an oil sample from your electrical transformer for analysis: Step 1: Tank pressure is relieved First, the tank is relieved of pressure. Most transformers have an operating pressure of around 2 PSI. Before an oil sample can be taken the vacuum/pressure gauge must read 0. The gas sample valve is opened to relieve the pressure. Step 2: Purging the drain valve The cap is then removed from the sample port, and the drain valve is opened to purge any moisture, dirt, or other contaminants before sampling. Some people also recommend removing the drain plug on the end of the valve and cleaning it, just in case there are contaminates stuck to the back wall of the plug, but that’s usually not needed. Step 3: Preparing the syringe Sample syringes are provided by the laboratory performing the analysis. The valve on the syringe has 3 positions. Position 1: Closed to hose Position 2: Closed to bleeder Position 3: Closed to syringe With the valve in the “closed to bleeder” position, the sample can be taken. Step 4: Pulling the sample In this example, a small piece of plastic hose is used as an adapter to connect the syringe to the sample port. The adapter is also purged before the sample is taken. The syringe is inserted into the hose, the drain valve opened and the syringe is filled to a little bit over the 50cc mark. Step 5: Evacuating air from the syringe After the sample is pulled, the air in the syringe is evacuated With the syringe in an upright position, and the valve closed to either the bleeder or the hose, the plunger is pushed up, forcing the air and a little bit of oil out until the 50cc mark is reached. Step 6: Packing the syringe back up With the valve in the closed-to-syringe position, the syringe is wiped clean of oil, and packed for shipment to the laboratory for analysis. Step 7: Cleanup The sample port cap is re-attached, and the excess oil is disposed of per EPA guidelines. Step 8: Re-pressurizing the tank Finally, the tank is re-pressurized with nitrogen, and closed. For more information or how to purchase an electrical transformer please visit: https://www.maddoxtransformer.com/ Timestamps: 0:00 Introduction 0:06 Tank pressure is relieved 0:21 Purging the drain valve 0:41 Preparing the syringe 1:00 Pulling the sample 1:22 Evacuating air from the syringe 1:36 Packing up the syringe 1:45 Clean-up 1:51 Re-pressurizing the tank

Being a great electrician requires a strong knowledge of math. We use it daily from bending conduit, to figuring out what wire to pull, even simply counting light fixtures or circuits. But which formulas should we be more familiar with? In todays episode of Electrician U, Dustin explains the top 5 formulas every electrician should know. 🤘⚡️EU Learning System⚡️🤘 For Individuals --- https://electricianu.com/learning-system-for-individuals/ For Businesses --- https://electricianu.com/learning-system-for-businesses/ -Video courses on every side of the electrical trade (theory, code, safety, wiring, install, troubleshooting, leadership, and more) -Practice exams for 2017, 2020, 2023 code -YouTube videos categorized and searchable -Audio lessons -Forum -Business version has admin portal and ability to assign learning to technicians and monitor progress -Any business size from 2 techs to 2,000! 🎓💡CONTINUING EDUCATION💡🎓 Sign up here --- https://electricianu.com/continuing-education/ -State Approved -Video Based ✍📝PRACTICE EXAMS📝✍ Get them here --- https://www.electricianu.com/electrician-u-membership/ -2017, 2020, and 2023 NEC versions -Online Residential Wireman Exam -Online Journeyman Exam -Online Master Exam -300 Question Online Code Cannon (not license specific, all code) -Take as many times as you want -All of the above come with printable PDFs 🎤🎧PODCAST🎧🎤 Spotify: https://open.spotify.com/show/7ldCwdxhWnT0R3nne96XjC?si=a42a98b83c3549fc&nd=1 Apple Podcast: https://podcasts.apple.com/us/podcast/electrician-u/id1583270265 📱👍SOCIALS👍📱 TikTok - https://www.tiktok.com/@electricianu Instagram - https://www.instagram.com/electrician_u/ Facebook - https://www.facebook.com/TheElectricianU/ Reddit - https://www.reddit.com/r/ElectricianU/ Rumble - https://rumble.com/c/ElectricianU Discord - https://www.discord.gg/electricianu 🎧🎹Music, Editing, and Videography by Drake Descant and Rob LeBlanc🎹🎧 #electrician #electricity #electrical First on the list is Ohms law. This formula is the relationship between Voltage, Amperage, and Resistance. In many cases, we are not given ALL of the information for a piece of equipment, but still need to determine either the voltage or amperage of it. Ohms law is simply E (voltage) over I (amperage) times R (resistance). So, draw a circle and put a large T in the center of it. Above the horizontal line of the T draw an E. On the left of the vertical line draw an I and on the right of the line draw an R. To assist you, cover up the letter you are attempting to solve. For instance, if I covered up E (voltage) it would leave me with I (amperage) multiplied by R (resistance). If I had a 20a piece of equipment with a 6 ohm resistance (20 x 6) it would be running at 120v! The next formula is Joules law. This one is slightly different than Ohms law and is the relationship between Wattage, Amperage, and Voltage. The circle is the same as above but with a P on top, an I on the left, and an E on the right. The math is the same also. So, if I was attempting to see how many watts were on a given circuit, cover up the P and I am left with I (amperage) times E (voltage). For a 20a circuit operating at 120v, I would have 2400w. Both of these formulas are very useful because we don’t always get all of the information we need on the equipment nameplate. Voltage Drop is something that every electrician should know how to figure out. For a single phase circuit the formula is 2 x K(conductor) x I (circuit amperage) x L (length) divided by the circular mils of the conductor you are attempting to use. For 3 phase replace the 2 with a 1.732 (the square root of 3). If you have a copper conductor use 12.9 and use 21.2 if you are using aluminum conductors. The circular mils for electrical conductors can be found in the NEC codebook in Chapter 9 Table 8. The resulting number after crunching the equation is the amount of volts that are lost. You may find that you may need to upsize your wire (and perhaps the conduit) to get your voltage drop down to a reasonable level. Resistance formulas are needed for every electrical theory class! For a series circuit the total resistance is the sum of all the resistances. For a parallel circuit, it’s the reciprocal of the sum of all the reciprocals. So, 1 divided by 1/R1 + 1/R2 + 1/R3 + etc. An easier way for that last one would be product over sum formula. So, if you had a parallel circuit with resistances of 2, 3, & 4 the formula would be 2 x 3 x 4 divided by 2 + 3 + 4. Much Simpler! Lastly is Horsepower. Something to just keep in mind is that 1 HP is equivalent to 746 watts. For single phase motors the formula is HP= E (voltage) x I (amperage) x EFF (efficiency) x PF (power factor) divided by 746. For a 3 phase motor, simply insert 1.732 (the square root of 3) in front of the E. Efficiency you can find on the nameplate of the motor. If you have a completely balanced load that isn’t running a ton of motors you may have a power factor of close to 1.

What is grounding and bonding in solar PV systems? Instructor Rebekah Hren breaks down these essential safety concepts that every solar professional needs to understand. While grounding connects your system to earth for voltage stability and protection, bonding ensures all metal components are electrically connected to prevent dangerous voltage differences. This excerpt is from the comprehensive "Solar PV Ground-fault Troubleshooting: Theory, Tools, and Field Application" course available on HeatSpring. Learn more and enroll here - https://www.heatspring.com/courses/solar-pv-ground-fault-troubleshooting-theory-tools-and-field-application?utm_source=YouTube&utm_medium=video&utm_campaign=grounding+and+bonding The full course dives deep into advanced troubleshooting techniques, real-world scenarios, and practical diagnostic skills essential for safe PV system maintenance.

Have you ever wondered how a Battery Management System works? Erik Stafl, President of Stafl Systems, walks you through the basics, starting with two primary purposes of a battery management system for a lithium-ion battery pack: providing safe and reliable operation. Topics Covered: Purpose of a BMS BMS Inputs BMS Outputs Current Sensors BMS System Diagram BMS Communication The Battery Management System takes a number of inputs, including voltage, temperatures, and current among other inputs. The BMS then runs algorithms to create a series of outputs including state of charge (the fuel gauge), the state of health, the safe operating envelope ™, and any faults the battery pack may have. Erik then describes how the BMS is used in a multi-cell application, using a system diagram. Learn more at https://staflsystems.com.

We're developing an Electrical Testing Standards Guide with Megger, with written chapters (and videos) on topics like measuring current and voltage, performing insulation resistance tests, locating ground faults, and more. Learn more and download the guide: https://us.megger.com/standards_guide

Solar String Trouble Shooting