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  1. General Electrical Discussion
    Lighted-when-off switches seem to have the light close the circuit when the switch is open. That said, If I wanted to protect against a short circuit, can I insert a 2nd load between a circuit in series? For example Power supply + to Main Load + ... Main Load -- to Dummy Load + ... Dummy Load --...
  2. New Member Introductions
    Hello there... I am a street light geek with a lifelong passion for the topic. I have a couple decades of experience in street light engineering... mostly light sources and optics, but I also have a ton of technical knowledge rattling around in my brain. A few years back I co-founded a...
  3. Alternative Energy Forum
    Hi, i have a few question about lithium ion batteries i have an idea and for it, i need a battery that can generate 2880 watts. Is there such a battery that i can buy with that much power? if not, is it possible if i put 5/10/30/etc batteries in series to create it?
  4. General Electrical Discussion
    I have some friends who lost their house several years ago to a flood. After rebuilding (and a little re-designing), they had an L-shaped hallway that had 2 light fixtures operated by 3 switches, one at each end of the hallway, and one at the "L" which was added in the re-design. The...
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