On Thursday 28 March 2019 14:27:01 Chris Albertson wrote: > On Thu, Mar 28, 2019 at 2:17 AM Frank Tkalcevic > <fr...@franksworkshop.com.au> > > wrote: > > > "There "universal" is the one to get. > > > > Those pumps are listed as 240v 50Hz - is that dangerous keeping AC > > submerged > > like that? > > It depends where yiu buy the pump. ANything sold in a US retail > store is going to be 110 volts not 220. But even 110 is enough to > worry about. The pumps are safe. They are 100% potted in epoxy. > Keeping the water out of the electic part does not depend in a gasket > or seal. > > Still, you really want to put the pumps on a GFCI outlet. > Maybe. I cheat and use a dp relay, kill both sides of the line.
> If you are realy worried about 110 volts and water then go to the > lacal West Marine (or any good marine hardware store) store and buy a > bilge pump that runs on 12 volts > In this catogory "Rule" is the best known brand. They are very > reliable and work on 12 volts. I've rune thes for years in salt > water and never a corosion problem. > > You also just might find that controling a 12V DC pump from a computer > is easier then controlling a 110 volt AC pump. for 12VDCasimple > MOSFET switch is needed. > > You can get fancier and install a flow meter and use it to detect pump > failures. > > > -- > > Chris Albertson > Redondo Beach, California > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
