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  1. Residential Electrical Forum
    I am looking for some help on wiring an automatic transfer switch. I will be hiring a professional but want to understand how the wiring would work. I have put up two pictures of a 240v and 120v option. Solar and a battery will be the primary source of power the the critical load sub panel with...
  2. Alternative Energy Forum
    I understand a Grid Tie PV inverter converts DC to AC and that can be fed into the grid, with a safety feature which disconnects it when the grid goes down to protect line workers. Does a device like this exist that can be plugged into a portable generator, that is already generating AC, which...
  3. New Member Introductions
    Hello people! First of all, I am not an electrician. Having learned what (relative) little I know about electricity to apply it to a do it yourself off-grid solar system, I have HUGE RESPECT FOR YOU PEOPLE. Lord have mercy, this stuff is confusing!!! LOL. Anyway, I have a question if I...
  4. Alternative Energy Forum
    I'm trying to determine real-world requirements for rapid shutdown in small "cottage" off-grid systems in Manitoba, Canada. If you're off-grid, code compliance falls to the Office of the Fire Commissioner. As far as I can tell, there is currently (no pun intended, but I'll pretend it was) only...
  5. Alternative Energy Forum
    Can anyone confirm that this regulation for Solar PV - Overcurrent Protection is in the 2009 Canadian Electrical Code book: "Where overcurrent protection is required by Subrule (1) for a photovoltaic source circuit, each photovoltaic source circuit shall be protected by an individual...
  6. General Electrical Discussion
    Hey guys, I'm new here in the forum, and my NEM electricity bill skyrocketed. So I bought Sense to see why am i using so much electricity. I have solar panels, and "Sense" device has to be installed inside the main panel. The trouble is that there is no space for "sense" in the main panel, and...
  7. Alternative Energy Forum
    Has anyone out there had experience with solar modules from REC having marks on them that look like a grease mark but turn out to actually be under the glass due to a manufacturer defect? The solar company that I work for in New England has seen a few dozen of these. Some have installed them for...
  8. General Electrical Discussion
    I'm swapping out a 100 amp panel that was damaged for another 100 amp panel. Adding spaces w/ my new panel. The previous panel had the solar hot tapped in btwn. The 100 amp & the service head, instead of being put on a breaker. Now that i have extra spaces for a breaker, do you think i should...
  9. Alternative Energy Forum
    I work for a commercial electrical contractor and we don't do much with solar. We were brought into a building to disconnect some panels so roofers could get in and the guy who reconnected them ****ed up. He didn't disconnect the DC link and said he saw an arc at the MC4 connector when he did...
  10. NEC Code Forum
    Greetings, I'm working on job in MD. I got a design kicked back because I had TC-ER cable running from an outside AC PV combiner into an attic, through the attic, down a piece of EMT (set aside for PV when the house was built), and into a disconnect in the homeowner's mechanical room. The...
  11. General Electrical Discussion
    The chairmen of my neighborhood had asked me to look at a solar system to find out why the sign light is barely working on days where there is not as much sun. I have not worked on solar systems like this before. It is quite high tech. The package comes with the solar panel, Controller box...
  12. NEC Code Forum
    It is permissible to terminate two different inverter outputs, each with its own fused disconnect, ahead of the service disconnect? NEC 2014 in effect.
  13. Looking To Hire
    Imagine Energy, a leading energy contracting company based in Portland, Oregon, is looking for outstanding Journeyman Electricians to join our growing team. The positions will provide leadership and technical expertise to small (2-3 person) solar photovoltaic installation crews on both...
  14. Looking To Hire
    Ever consider solar? Publicly traded and well managed residential solar installation company looking for ME in several counties who are willing to become an employee/officer. Will consider someone with management experience for new branch in Long Island. :thumbup: We work hard and have fun...
  15. New Member Introductions
    Hi everyone. My name is Brett and I am a new apprentice with Madison, Wisconsin, Local 159. I was recently hired by Pieper Power. Previously, I worked as a photovoltaic module installer and hold certificates from Century College in St. Paul, MN, in Solar Renewable Energy and Site Assessment. I...
  16. Looking To Hire
    Sunwire Energy is a growing solar installation company based in Maryland and we are seeking a Master or Journeyman Electrician to provide licensing, leadership and technical acumen to our field operations. This is a key field management position within the company. Primary duties to include: •...
  17. NEC Code Forum
    I have an interesting situation. I have a 12k solar PV array for a residential service. There are two interters that is expected to output 22 amps and 30 amps repsectively. They are also to have breaker in the Load Box at 30 amps and 50 amps respectively. According the my HQs read on NEC it...
  18. NEC Code Forum
    I'm working with a photovoltaic system installation, and the open air wiring that needs to travel from modules to be collected at the inverters (mounted at the end of the rack). All the current-carrying wire is XLPE PV wire, and it is being used in a PVC conduit that is given a gap every...
  19. Alternative Energy Forum
    I hope that this type of post is okay here! I work for the Rocky Mountain Chapter of IEC, and we're having a NABCEP Certified Installer Test Prep class at our Denver campus on January 12, 2013. You can sign up here. I hope to see you there!
  20. NEC Code Forum
    I have an application where a solar panel (DC Voltage) will be on a pivoting system. It pivots on bronze bushings (Conductive). Is there a code that says these bushings cant be a grounding system, and that I have to install jumper wires from the pivoting solar panel to an earth ground. Please...
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