Carry a clamp-on current meter, for goodness sake.
A 10ga wire has about .001 Ohms per foot, so if you have digital voltmeter you can get an approximate reading. 1 millivolt drop over 1 foot = 1 amp.
Be Well,
Arby
On Aug 4, 2009, at 1:06 PM, Mike <biankablog@verizon.
I did a quick 18 nm mini cruise last week. I got started later than I planned (as usual <g>) and because lot the lack of wind I motored the first part of the trip. I was moving along at 5.5 knots SOG helped by a little current push. I could not tell how much because my knot meter had fouled. But, the real disappointment was that the Xantrex XBM battery monitor seems to have gone south so I could not tell how many amps I was drawing off the battery bank. It seems the display is kaput so that it reads "8888" all time time. I tried unplugging and resetting it. Still no good. It is a little disappointing because it was purchased in April 2008, installed last June and failed in July this year and of course the warranty is for one year! Has anyone had a similar failure with the Xantrex XBM battery monitor? On an electric boat it is like traveling without a fuel gage and is very helpful when testing and motoring as I was. Other than the Xantrex battery
monitor issue the electric propulsion preformed very well during the trip.
Mike
http://biankablog.
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