View Single Post
Old 08-28-2016, 02:20 PM   #7
DavidM
Valued Technical Contributor
 
DavidM's Avatar
 
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,786
OK, two A/C units, probably 16,000 btu each. They will pull about 15 amps each and the fridge will be irrelevant. So with nothing else running like a microwave, hair dryer, water heater, etc. you are pulling 30 amps or 3,600 watts, which is low for a 9 kw Northern Lights. And the starting current shouldn't phase it.


Connect a voltmeter to the terminals on the A/C and measure the voltage there and at the generator output. You may have a bad connection and that will show up as a voltage drop. I would worry about anything more than a 5 volt drop. Also check the voltage when the A/C compressor kicks in. It might drop 10 V at the A/C terminals and move a few volts at the genset output when the compressor kicks in. Any more and you probably have a bad connection somewhere.


Your 9kw NL generator should be able to start both A/Cs with no problem and no soft start kit.


David
DavidM is online now   Reply With Quote