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<blockquote data-quote="Silas Pradetto" data-source="post: 24710" data-attributes="member: 34">Re: When L21-30 just isn&#039;t big enough&nbsp;Scott, I know that, we&#039;ve met, you know what&#039;s up. I just thought of a scenario that helped me picture things:There are two amplifiers connected to an L14-30 circuit. One is across both hots, and the other is hot to neutral. Something happens where the 120V wired amplifier trips it&#039;s circuit, but rather than the whole L14-30 going down, only half does. The amp wired for 240 volts is not seeing a complete circuit anymore, so it shuts off.What someone might not guess is that the the hot of the 240V amplifier on the tripped leg is still probably hot--it&#039;s just waiting to see a path to ground or somewhere else to complete the circuit, because it&#039;s drawing through the 240V amplifier.To make things worse: I can&#039;t think of a problem scenario where the ground stays intact, so let&#039;s say the ground on the whole rack is missing. And let&#039;s say that when the other amplifier died, it shorted hot to the chassis. Now the whole rack is hot, but it looks like everything is off, and it&#039;s half tripped. Next person to touch the rack gets severely shocked or dies.Probably not a likely scenario, but I&#039;m also trying to bend my mind around situations where this would be deadly, and I think the main problem is going to be that voltage will be where it&#039;s unexpected if only half the connector shuts off.I hope this helps, I wasn&#039;t trying to leave you an idiot comment.</blockquote>

[QUOTE="Silas Pradetto, post: 24710, member: 34"] Re: When L21-30 just isn't big enough Scott, I know that, we've met, you know what's up. I just thought of a scenario that helped me picture things: There are two amplifiers connected to an L14-30 circuit. One is across both hots, and the other is hot to neutral. Something happens where the 120V wired amplifier trips it's circuit, but rather than the whole L14-30 going down, only half does. The amp wired for 240 volts is not seeing a complete circuit anymore, so it shuts off. What someone might not guess is that the the hot of the 240V amplifier on the tripped leg is still probably hot--it's just waiting to see a path to ground or somewhere else to complete the circuit, because it's drawing through the 240V amplifier. To make things worse: I can't think of a problem scenario where the ground stays intact, so let's say the ground on the whole rack is missing. And let's say that when the other amplifier died, it shorted hot to the chassis. Now the whole rack is hot, but it looks like everything is off, and it's half tripped. Next person to touch the rack gets severely shocked or dies. Probably not a likely scenario, but I'm also trying to bend my mind around situations where this would be deadly, and I think the main problem is going to be that [I]voltage will be where it's unexpected[/I] if only half the connector shuts off. I hope this helps, I wasn't trying to leave you an idiot comment. [/QUOTE]

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