Rod Sumner of Niagara Falls, CAN asks:
On the recent subject of crusing power was there a typo as the alternator is producing 6250 watts but the inverters were giving out 8000 watts? have you found the holy grail of free power???
Dan Streech responds:
Rod, thank you for your insightful question (which proves that people are actually reading these postings). Unfortunately, your clever eye has only reveled my poor word smithing rather than a clue leading to the holy grail of free power, cold fusion, perpetual motion or kryptonite.
Actually there was no typo in yesterday’s writing. I did mean to say that the alternator puts out 6 KW and the inverters can put out up to 8 KW. What I failed to point out is that when the inverter output exceeds 6 KW, there will be a deficit of DC power which will be made up by drawing from the batteries. When the inverter output is less than 6 KW, the batteries will be recharged. It is probable that the average output of the inverters will be less than 6 KW on a long passage, so ultimately a deficit won’t occur. A net deficit in DC power will show itself on the “Net Amps” meter and the operator should show mercy if the deficit exists for more than several hours. A Link monitor could keep track of the total deficit and simple arithmetic would reveal if an AC load would need to be shut down.
Now, since we are getting more precise here, I should also point out that the voltage regulator on the “24 volt” alternator is actually set at 28 volts. So 28 volts X 250 amps is actually 7,000 watts or 7 KW. Still, however, there can be a deficit, your question is valid and my answer above is applicable.thank you for your insightful question.
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