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<blockquote data-quote="tyromeo55" data-source="post: 3613985" data-attributes="member: 1719"><p>it looks like others might of answered this but why not go ahead and add my 2 cts?</p><p></p><p></p><p></p><p></p><p>The NEC requires there be a mechanical means of interlocking multiple sources of power. In a nutshell that means only one can be turned on at any given moment. When one is ON the other is physically held off. There are companies that sell listed parts-kits for most panels to add this functionality (see <a href="https://www.interlockkit.com" target="_blank">https://www.interlockkit.com</a> you can find them for appx $75 on Amazon last I looked) Then from the secondary input breaker you wire to an inlet of some kind. in outlet form it looks like a shielded male cord end. With the interlock power can not be present on those prongs</p><p></p><p></p><p>Part 1 .... there really is no difference the problem comes from using 2 male ends to make a "suicide cord" and lack of interlocking the primary service. if you had a way to either mechanically lock the primary open (off) and hardwired into the outlet that would be the safe/better way to do it That is assuming other standard electrical practices are followed like wire sizing / not overloading the grounded conductor</p><p></p><p>Part 2 ... It really does not work that way. your roll-around generator would never pickup the load. Linemen will open (turn off) circuits to try to clear faults so that they can re-fuse/close and restore power in as many sections as quickly possible. Then they will start working on individual (smaller # of customer) faults (or another team will) Protocal will mandate that they ground open lines to protect themselves from accidental closure and idiots with generators but in the event that does not happen you would be energizing a portion of the line they assume is dead. The transformer will step up the voltage making it even more dangerous (think 13,200V in most cases). What if the section they assume dead is on the ground in a neighborhood or on top of a car across an intersection. to me it is no more reckless then shooting a gun into the air. Is that bullet going to kill someone on the way down? Probably not but it can and has happened. If it does do you want to be the A-hole who killed someone?</p></blockquote><p></p>
[QUOTE="tyromeo55, post: 3613985, member: 1719"] it looks like others might of answered this but why not go ahead and add my 2 cts? The NEC requires there be a mechanical means of interlocking multiple sources of power. In a nutshell that means only one can be turned on at any given moment. When one is ON the other is physically held off. There are companies that sell listed parts-kits for most panels to add this functionality (see [URL]https://www.interlockkit.com[/URL] you can find them for appx $75 on Amazon last I looked) Then from the secondary input breaker you wire to an inlet of some kind. in outlet form it looks like a shielded male cord end. With the interlock power can not be present on those prongs Part 1 .... there really is no difference the problem comes from using 2 male ends to make a "suicide cord" and lack of interlocking the primary service. if you had a way to either mechanically lock the primary open (off) and hardwired into the outlet that would be the safe/better way to do it That is assuming other standard electrical practices are followed like wire sizing / not overloading the grounded conductor Part 2 ... It really does not work that way. your roll-around generator would never pickup the load. Linemen will open (turn off) circuits to try to clear faults so that they can re-fuse/close and restore power in as many sections as quickly possible. Then they will start working on individual (smaller # of customer) faults (or another team will) Protocal will mandate that they ground open lines to protect themselves from accidental closure and idiots with generators but in the event that does not happen you would be energizing a portion of the line they assume is dead. The transformer will step up the voltage making it even more dangerous (think 13,200V in most cases). What if the section they assume dead is on the ground in a neighborhood or on top of a car across an intersection. to me it is no more reckless then shooting a gun into the air. Is that bullet going to kill someone on the way down? Probably not but it can and has happened. If it does do you want to be the A-hole who killed someone? [/QUOTE]
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