Spot fucking on, chuck. I was up all night worrying about this shit, even to the point the varying metals and floating box was making a massive murder capacitor.
Turns out there's 210v and all our existing PSU are rated to 240v, the meanwells are switch selected, and this power strip happenned to have surge where the other did not. Not sure why the first meanwell is running. But at least I'm not blowing up a farmers grain bins On Sun, Aug 23, 2020, 11:45 AM Chuck McCown <[email protected]> wrote: > I had something similar happen. An electrician picked the wild leg of a > three phase to connect a new receptacle. We had about 208 volts on it. Of > course only discovered after the damage. I have seen neutrals get damaged > and connected to the other side of the box giving you 220. Did you check > your AC voltage? > > Sent from my iPhone > > > On Aug 22, 2020, at 9:35 PM, Steve Jones <[email protected]> > wrote: > > > > > > Today was an adventure, to say the least. > > Without the prior info on the clusterrest clusterfuck of my career, we > are installing some wtm4200. Glancing these meanwell power supplies may or > may not be -48v. > > We have two radios onsite, first powers up swimmingly > > Second power supply connected only to AC decides to smoke bomb. Was > plugged into a triple plug on a power strip. Was powered on for a bit then > did its rocket ship thing. Figured ok, just a bum meanwell, the other one > is up and powering a radio without issue. > > I'm plugging in a cambium ps into the triple plug as my contractor is > plugging in a power strip into the second on a duplex outlet. > > The fucking powerstrip explodes, literally. > > It's a cheap surge suppressor power strip. So I'm assuming the SS is > what blew up. > > I have no further data, since my contractor almost lost a hand. I'll > investigate in morning daylight. > > > > Somewhere in this power mix I screwed up. > > > > With the limited data I have, anybody got any ideas before somebody gets > killed? > > > > I have 2 force 300-25, a force 300_13, a , a mikrotik, and a 3000 epmp > omni on this power strip. Circuit is less than 2 feet to the breaker. > Breaker is in an extended panel I'm unaware of the wiring details. The > first wtm powered with no issue. > > This is a 20 amp breaker, when the meanwell fried it didnt trip. But > simply plugging in a powerstrip, with nothing in it, almost cost my > contractor a hand. > > > > Any idea where I fucked up. This is a grain leg and they're not to find > of explosions. > > > > I'm wondering, since they bond the dc return to ground if it's not > energizing a chassis or something > > -- > > AF mailing list > > [email protected] > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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