Forum Discussion
ScottG
Mar 29, 2017Nomad
BFL13 wrote:
I posted a while back that I get that 1 DC amp draw via inverter with the CFL, using my 3000w inverter.
I posted that the small inverter idea was a scam because they usually have a long thin wire situation which adds to their amp draw, but the big inverter has short fat wires with little loss.
I got more DC amps draw from that same 120v load with a small 300w inverter in the Winegard 12v socket than the 1 amp draw using the 3000w inverter up front close to the batts.
It is not the size of the inverter, it is how it is wired to the batts that counts.
The size of the inverter counts. Big ones have many more (active) components to handle that higher power capability that even at idle draw some power.
The wiring in a RV will have no problem supplying enough current to power 15 to 18 watts of leds via an inverter.
A small, MSW inverter uses less standby current because it has fewer active components.
So in short, a 60 watt MSW inverter is not going to take more power running the same load than a 300 or 3000 watt inverter.
Now could you purposely set up a circuit with grossly undersized wiring for the smaller inverter and cause it's regulators to work under their thresholds in order to cause them to draw excess current? Of course but one would have to do far more than draw 1 or 2 amps though a 16 awg wire (typical in RV's) to run a couple of LEDs in order to do so.
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