Voltage drop to 1200 watt inverter
Getting used to a 2019 new RV with residential refrigerator which is on a Xantrex Freedom X 1200W inverter with auto transfer feature and remote monitor. Bedroom and entertainment receptacles on a s...
Forum Discussion
CA Traveler wrote:
To answer your question: Yes, No, Maybe.
Buy a reasonable digital voltmeter for $10 and measure the battery voltage and inverter DC input voltage at the inverter DC input terminals. 0.3V drop is certainly possible given whatever wiring you have.
Let's be clear: Marine batteries are NOT deep cycle batteries other than the label. A little better than starting batteries but much less than say 6V GCs.
Truth on the batteries.
The misrepresentation of those "RV/Marine" batteries by the big box stores pisses me off! WAY to many people waste their money thinking that they got a great price on deep cycle batteries.
The inverters battery voltage is read at the inverter side of the battery/inverter DC connection. If you have a measurable voltage drop on the DC connection that will show up on the DC voltage display.
If the battery measures 13.8v AT THE BATTERY and you have a significant load on one inverter, that inverter will display battery voltage minus voltage drop. The inverter with no load will experience an insignificant voltage drop on the DC connection. That too will manifest in the inverter DC voltage display.
This could present as one inverter (no load) displaying the same voltage as your battery monitor and the second inverter(running a load) showing a lower voltage.
I apologize for the disjointed reply. I find myself having a challenge communicating coherently when typing with one finger on a touch screen. I sound much smarter when I have my laptop. :) :)
