Ammeter Theory of Operation - Printable Version
+- Newell Gurus (https://newellgurus.com)
+-- Forum: Technical Discussions (https://newellgurus.com/forumdisplay.php?fid=3)
+--- Forum: Electrical (https://newellgurus.com/forumdisplay.php?fid=30)
+--- Thread: Ammeter Theory of Operation (/showthread.php?tid=3120)
+- Newell Gurus (https://newellgurus.com)
+-- Forum: Technical Discussions (https://newellgurus.com/forumdisplay.php?fid=3)
+--- Forum: Electrical (https://newellgurus.com/forumdisplay.php?fid=30)
+--- Thread: Ammeter Theory of Operation (/showthread.php?tid=3120)
RE: Ammeter Theory of Operation - Richard - 05-02-2022
David, the 120V water pump is a monster. I pull 160 amps DC when it starts. If the microwave or aux air pump is running, you could easily top out over 200 amps for a brief time.
Don't know what inverter you have, but mine puts out 120 amps charging the house batteries.
Translation 300 amp shunt = good.
RE: Ammeter Theory of Operation - dbld58 - 05-02-2022
Thank Richard - I figured 100 would be too small.
How did you figure out your amperage draws? Just curious.
RE: Ammeter Theory of Operation - bestgenman - 05-02-2022
This is my choice, it displays average leg voltage and current and KW on one screen, which is where I leave it. There are several screens, each with different information. such as L1-N voltage, L2-N voltage, L1-L2 voltage, amperage each leg, kw, kva, pf, watt hours consumed, THD and much more.
The CTs need to be changed to 100:5 rating and making sure the voltage conductors are fused. The existing face plate is changed to one hole plus the thermostat.
Just different viewpoints !! Some like a separate meter, some want different information. I waned KW.
RE: Ammeter Theory of Operation - Richard - 05-02-2022
I used a sophisticated amp meter that is corrected both for the galvanic attraction of the earth’s poles, and the direction the wind is blowing. Seriously i just looked at the inverter panel when the pump, microwave, or something else is operating. I have a magnum inverter with the shunt monitoring capability.
RE: Ammeter Theory of Operation - smagown - 05-03-2022
I replaced my 120v water pump with a 12v Remco 55A Aquajet-ARV. It is 5.5 gpm and 65psi, $220 on Amazon. it produces plenty of water, the Headhunter toilet works fine, and best of all, it is dependable.