I know enough to get in a pickle, so we started hiring electrician to run to our generator cutover. I go from there. Not even sure if I can hold this against the electrician, it's an honest mistake and nobody got hurt
On Sun, Aug 23, 2020, 1:36 PM <[email protected]> wrote: > Actually only one of the three legs will be high assuming there is a > ground on one of the windings of a delta connection. So two of the legs > should be 120 to ground. You just got unlucky with the breaker placement. > > *From:* [email protected] > *Sent:* Sunday, August 23, 2020 12:32 PM > *To:* AnimalFarm Microwave Users Group > *Subject:* Re: [AFMUG] Aviat power supplies and exploding power strips > > I can see that three phase breaker right above your single leg breaker. > Check all three. I am sure you will find one you can use if there is an > open slot on that phase. > > *From:* Steve Jones > *Sent:* Sunday, August 23, 2020 12:12 PM > *To:* AnimalFarm Microwave Users Group > *Subject:* Re: [AFMUG] Aviat power supplies and exploding power strips > > 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 >> > ------------------------------ > -- > 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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