Carl Lowenstein wrote: > Is this connected to an always-on-line UPS that continuously runs its > inverter from the battery and charges the battery when AC line input > is available? Just curious. That would make it a negative-resistance > device, such that a reduction of input voltage (due to a bad > connection) would cause more current to be drawn, to keep the power > constant. Real positive feedback in the classical sense.
It is connected to an APC 3000XL. My understanding is that this is not an "always-on-line" UPS. I think it runs off mains unless the mains fail in which case it switches to batter. An electrician should be showing up tomorrow. Hopefully I will find out exactly what happened. Only one lead is burned...wouldn't that imply that the power went to ground somewhere other than through that cable? Nothing else is damaged anywhere so I am theorizing that something shorted to the chassis of the UPS which went to the rack which went to ground. But I am quite concerned because I'm pretty sure a circuit breaker should have tripped somewhere long before that connector got fried. -- Tracy R Reed http://ultraviolet.org -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
