15 amp breaker of main AC panel ok for 1600 btu AC

goin4broke

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Assuming you meant 16,000 not 1600 I would say most likely no. The starting in rush would be too high. There should be a nameplate which should confirm voltage/hertz/amps.
 

cb34

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Assuming you meant 16,000 not 1600 I would say most likely no. The starting in rush would be too high. There should be a nameplate which should confirm voltage/hertz/amps.
For those with AC what size breaker do you have ?
 

CEShawn

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I know I moved some to 25 from 20's... they were running at 17 amps on an amp clamp... 20's I had to put to heat to start up... but that was decades ago but fought an issue there... initial kick tripped the 20's sometimes...
 

Wharf Rat

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Most 16K BTU units can draw close to 20A when starting up or when the compressor kicks on, although I would really need to know the exact unit. A 25A breaker has seemed to due to thick as mentioned by Shawn above, but what I HIGHLY recommend as we use them on almost every AC system we install, especially older units, are the Dometic 'Soft Start' modules - See this link: Dometic SmartStart III - Soft starter for marine air conditioning, 16
They do so much to help the electrical system from being overloaded, from helping to drop the initial inrush current by literally 50% in almost all cases, which we use predominately to help out the generator's droop factor. Voltage supply drop and even more problematic is when you can bring a generator or power supply from 60Hz to close to 50Hz, which can damage not only the genset and AC unit, but every sensitive AC device from a TV to a fridge. Absolutely worth adding, and will also help you get a better idea of what circuit protection you need. Here's a link to a spec sheet for the prior model, as it's really a simple install and makes all the difference in the world. - https://yachtaidmarine.com/wp-content/uploads/2016/01/Smart-Start-II-Dometic.pdf
 

Pequod

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Take a look at the data plate and tell me what the L.R.A (locked rotor amperage is).
That will determine what size breaker is appropriate.
 

goin4broke

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Most 16K BTU units can draw close to 20A when starting up or when the compressor kicks on, although I would really need to know the exact unit. A 25A breaker has seemed to due to thick as mentioned by Shawn above, but what I HIGHLY recommend as we use them on almost every AC system we install, especially older units, are the Dometic 'Soft Start' modules - See this link: Dometic SmartStart III - Soft starter for marine air conditioning, 16
They do so much to help the electrical system from being overloaded, from helping to drop the initial inrush current by literally 50% in almost all cases, which we use predominately to help out the generator's droop factor. Voltage supply drop and even more problematic is when you can bring a generator or power supply from 60Hz to close to 50Hz, which can damage not only the genset and AC unit, but every sensitive AC device from a TV to a fridge. Absolutely worth adding, and will also help you get a better idea of what circuit protection you need. Here's a link to a spec sheet for the prior model, as it's really a simple install and makes all the difference in the world. - https://yachtaidmarine.com/wp-content/uploads/2016/01/Smart-Start-II-Dometic.pdf

Thanks for that info Wharf. Didn't know that sort of thing was even on the market. I do see a lot (almost everything) is soft start today but I only see it on large 3 phase loads.
 
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