I didn't see the voltage drop you mention, but did note that the unit's current draw is 7mA (which is less than my stereo head unit even with face plate off).

I don't have any problems with the gauge of wire used, my westy does not have a very demanding electrical power requirement when camping. Lights are LEDs, back of fridge fan I have is less than 1A, the water pump is intermittent 2.5A, I guess the stereo is the biggest constant draw, but I'm guessing it is 5A or less most times.

alistair

On 2012-10-14, at 7:05 PM, Dennis Haynes wrote:

> http://www.powerwerx.com/techdata/Watts-UP-V2.pdf
> 
> Note the voltage drop-power consumption of this device.
> 
> This device is mostly designed for the Radio Control (RC) car, plane, boat,
> helicopter hobbyist. While it can take 50 amps this is for a source that
> will be depleted in minutes, not hours.  All the current going in/out of
> this device is connected with those 14 gauge wires, normally used for 15-20
> A/H loads. This can be a good test device but I would only for limited
> load/charging current currents.
> 
> Dennis
> 
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Alistair Bell
> Sent: Sunday, October 14, 2012 7:06 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: doc wattson or watts up?
> 
> I think I might have posted about these meters some time ago, I'm sure I
> mentioned them to Mark D. I'm wondering if anyone has bought either of them
> and if so what their thoughts are after some use.
> 
> http://www.powerwerx.com/digital-meters/doc-wattson-meter-dc-inline.html
> 
> I'm leaning towards buying the doc wattson model.
> 
> alistair