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  1. NEC Code Forum
    Assume rework on existing PV system. Adding inverters to PV Combiner and am trying to figure how 705.12 applies. The PV combiner is a load center / panel box which has a breaker protecting the bus, which is service connected. Since the combiner is a load center panel, and it is rated for 200A...
  2. New Member Introductions
    Fellow sparkies, I'm installing a 6.5kW Photovoltaic system and homeowner will have a generator installed in the near future. His intention is to have whole house back up when grid is down. However, this has not been engineered. I'm concerned that PV + generator will be too much production if...
  3. 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...
  4. General Electrical Discussion
    We just finished wiring a 7.5 KW PV system. The system feeds down into a locking disconnect then backfeeds into the system through a 240V breaker. We installed a type BR panel and beckfed through a 2-pole 30A breaker (considering the 7.5KW). The inspector wants the breaker locked down to the...
  5. General Electrical Discussion
    Anybody w/experience installing a solar PV system in Canada/Ontario? I am talking about 10kW to 50 kW commercial w/600Vac. Are there any solar inverters (Xantrex, SatCon, others) with 600Vac output? Is it better to use an US-solar inverter for 480V with a transformer? Any help is appreciated...
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