Sorry, about the open statement
but, I don't have enough information and without an Amp meter... Here goes;
Is your extension cord getting the least bit warm?
Try a #12AGW 15 foot extension cord, look at the AGW (Wire thickness) and distance Plug to power Box.
There is an important item
missing in the Manual
1) How much current draw,
At 50 feet?
Lots of Power factors to think about with Electric motor driven compressors;
For a 2hp electric Motor ya need
1500watts of power
Watts law and OHMS law states; 1500W/120V=12.5Amps plus the Starter circuit Amperage (what ever that is) is way more for a compressor, well over 20amps all added up, by the time you reach the end of your 50 foot #18AGW extension cord Plus the distance to your Power Box; all adds up resistance/OHMs which lowers the Voltage which increases the Amperage as your extension cord gets HOTTER.
Breakers are made to take some time to heat up and then trip.
https://www.about-air-compressors.com/support-files/jobsmart-tractor-supply-model-ta2040.pdf
SOURCE: hisense air conditioner
-If both compressor and fan motor starts and stop, thermostat is the defect.
- If only the compressor check for your outlet no sign of discoloration, check the voltage if normal, check the defective overload protector of the compressor it its external, or compressor itself is defective
SOURCE: air compressor flips breaker before it will start?
Air compressors tend to draw more power as they age, however, will not trip breaker unless some malfunction. Here are some simple tests. Unplug compressor and turn the pump by hand, you may have to remove a cover to do this. It should turn freely; any resistance could be failing bearing (would make noise) unloader/check valve leaking allowing back pressure to pump, or failed start capacitor/start winding. Easy test for checkvalve. With pressure in tank loosen discharge hose at tank and check for air leak. Check valve should hold pressure in tank. Replace as needed. Failed capacitor/s will cause high amp draw. Remove from circuit and test. UF reading should be within 95% of printed rating. Finally, most air compressor motors have two windings, start and run. Power to windings is controlled by flyball switch inside rear of motor. This switch has contacts that can stick in start position and cause high amp draw. Examine windings for signs of overheating. Copper windings generally have color of new penny. Very dark brown windings bad news. Gook luck
SOURCE: DuoTherm compressor starts but will not continue to run
check condenser fan if running. it will make compressor comes on and off if broken
SOURCE: compressor not kicking in when i turn the air conditioning on.
what is the make and model? how long has it been switched on? is the compressor top hot?
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