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Floating neutral
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<blockquote data-quote="Rob Timmerman" data-source="post: 203278" data-attributes="member: 172"><p>Metering with a load connected can help identify these sorts of issues, as well as excessive voltage drop. You should see similar voltages with and without an unbalanced load connected. Here in 120V land, I like using 1000W PAR64 fixtures as loads (convenient, close to resistive, and ~8A).</p><p></p><p>Connecting all your equipment phase-to-phase can prevent damage in these sorts of scenarios (the voltage won't ever exceed the phase-to-phase voltage under miswiring conditions), but is likely not a viable option.</p><p></p><p>As far as protection devices, you could probably rig something up with a shunt-trip circuit breaker (or relay) and voltage monitoring on individual phases, but I'm not aware of any packaged devices that do this in a single unit at the voltages and currents of interest here.</p></blockquote><p></p>
[QUOTE="Rob Timmerman, post: 203278, member: 172"] Metering with a load connected can help identify these sorts of issues, as well as excessive voltage drop. You should see similar voltages with and without an unbalanced load connected. Here in 120V land, I like using 1000W PAR64 fixtures as loads (convenient, close to resistive, and ~8A). Connecting all your equipment phase-to-phase can prevent damage in these sorts of scenarios (the voltage won't ever exceed the phase-to-phase voltage under miswiring conditions), but is likely not a viable option. As far as protection devices, you could probably rig something up with a shunt-trip circuit breaker (or relay) and voltage monitoring on individual phases, but I'm not aware of any packaged devices that do this in a single unit at the voltages and currents of interest here. [/QUOTE]
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