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<blockquote data-quote="Tanis143" data-source="post: 3613893" data-attributes="member: 43724"><p>I'm sorry, but spoken like someone who has NO clue what they are talking about. Yes, linemen are supposed to watch for this kind of thing, however if you backfeed into the main line it will possibly charge a downed powerline in the reverse direction and can catch a linemen off guard. If it has gone the reverse through a stepdown transformer it will go from 124 volts (we say 110, but it actually is now 120-125 volts) at say 60 amps to whatever voltage the main powerline runs at but with reduced amperage. </p><p></p><p>And the difference between 110 coming from your breaker box and 110 coming from your generator is the amperage. Most electrical outlets are fed with 12/2 gauge romex which is rated at 20 amps. Coming from the breaker box you have a breaker that will flip if the amperage is too high. If you have a 6000 watt generator that is backfeeding you are now pushing 50 amps through that same line. This will cause the romex to overheat, melt the insulation and cause arcing, which WILL catch your house on fire. This is why you need a dedicated connection point with an automatic cutoff that ties back to the generator to turn it off when the power comes back on. That way you have the proper gauge romex that can handle the amp load and prevent backfeeding to the main line. Those who know what they are doing know how to calculate what to run and how much of it and can turn off the proper breakers in the house to isolate just the circuits they can run safely by backfeeding.</p></blockquote><p></p>
[QUOTE="Tanis143, post: 3613893, member: 43724"] I'm sorry, but spoken like someone who has NO clue what they are talking about. Yes, linemen are supposed to watch for this kind of thing, however if you backfeed into the main line it will possibly charge a downed powerline in the reverse direction and can catch a linemen off guard. If it has gone the reverse through a stepdown transformer it will go from 124 volts (we say 110, but it actually is now 120-125 volts) at say 60 amps to whatever voltage the main powerline runs at but with reduced amperage. And the difference between 110 coming from your breaker box and 110 coming from your generator is the amperage. Most electrical outlets are fed with 12/2 gauge romex which is rated at 20 amps. Coming from the breaker box you have a breaker that will flip if the amperage is too high. If you have a 6000 watt generator that is backfeeding you are now pushing 50 amps through that same line. This will cause the romex to overheat, melt the insulation and cause arcing, which WILL catch your house on fire. This is why you need a dedicated connection point with an automatic cutoff that ties back to the generator to turn it off when the power comes back on. That way you have the proper gauge romex that can handle the amp load and prevent backfeeding to the main line. Those who know what they are doing know how to calculate what to run and how much of it and can turn off the proper breakers in the house to isolate just the circuits they can run safely by backfeeding. [/QUOTE]
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