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When L21-30 just isn't big enough
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<blockquote data-quote="Rob Timmerman" data-source="post: 24504" data-attributes="member: 172"><p>Re: When L21-30 just isn't big enough</p><p></p><p>The 50A California connector isn't really a step up from an L21-30 if you can balance the load between the phases. The next step up if you don't want to go with cam is pin and sleeve, probably in a 60A/3-phase version. </p><p></p><p>Lab Gruppen appears to be limiting line current on that amplifier to 30A at 120V or 17.3A at 208, so you may be fine putting 2 on a 30A line/line feed. If you really want to allot each amplifier 30A, you could drop down to 3 in a rack (30A on each of 3 phases of the L21-30).</p><p></p><p></p><p>Me, I'd try putting 2 amplifiers line/line on an L21-30, drive the snot out of them in the shop, and measure the current. If the breaker doesn't hold, I'd move up to cam as the input for the racks, probably split phase given that you have an even number of amplifiers. #2 banded isn't really any worse to coil than the 4/5 you'd need with 60A pin and sleeve.</p></blockquote><p></p>
[QUOTE="Rob Timmerman, post: 24504, member: 172"] Re: When L21-30 just isn't big enough The 50A California connector isn't really a step up from an L21-30 if you can balance the load between the phases. The next step up if you don't want to go with cam is pin and sleeve, probably in a 60A/3-phase version. Lab Gruppen appears to be limiting line current on that amplifier to 30A at 120V or 17.3A at 208, so you may be fine putting 2 on a 30A line/line feed. If you really want to allot each amplifier 30A, you could drop down to 3 in a rack (30A on each of 3 phases of the L21-30). Me, I'd try putting 2 amplifiers line/line on an L21-30, drive the snot out of them in the shop, and measure the current. If the breaker doesn't hold, I'd move up to cam as the input for the racks, probably split phase given that you have an even number of amplifiers. #2 banded isn't really any worse to coil than the 4/5 you'd need with 60A pin and sleeve. [/QUOTE]
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