what is the amp draw on startup on a two stage compressor?

most things will instantaneously spike pretty high and breakers do wear out .. 15s on the low side for anything other than lights and a fan especially if anything else is on the same circuit ..

Probably so! However, might want check that you are on 110 not 220! Just for giggles.

@Fly - what model of Tuxing did you get?

If its got a tight spot you could be spiking up to 18 amps on a new compressor. If that 15 Amp breaker is old and has tripped a lot in the past they do wear out and trip easier with age. Make sure there is nothing else on the same circuit and don't use a drop cord . On a different note that tight spot you spoke of were your vavles open so you were not building pressure on start up? If it is super tight with the valves open I might pull it down to find out why. Tripping breakers is a sign something may not be right. It may be a problem with your circuit, or it may be a problem with the compressor. Either way it warrants investigation to prevent costly damage.

OK, I have a related story.

I rebuilt mine YH compressor head (a complete piston/cylinder head from aliexpress purchased on time to have a spare when I need it).

First time I turn it on it was kicking out the breakers no matter when I plugged it in. It was drawing maybe 18-20A for couple seconds before kicked the breakers.

Then I made a trick, instead of replacing the 10A breaker to a bigger, I made a new cable from HD parts (later realized HD is selling these cables maybe even cheaper how much this poop costed me), and I connected the YH to a 2x15A Washer plug (I used one phase only from a dual phase plug).

The brand new head was a big friction between piston and cylinders. After some 3-4 minutes running the compressor I could even hear the sound changed and quiet down, So it needed those 3-4 minutes to "burn in" and now I have no problem running it very normally.

This was my story, and maybe you can benefit from it. If you have an electrician friend handy you can consult.

Any compressor connected to an extension cord is going to draw more amps. You must use a heavier gauge extension cord that is as short as possible. The typical 16 gauge extension cord is going to overheat and trip the breaker. Replace the breaker with a new one if it is old and has tripped repeatedly. Your washing machine outlet it is on a 20 amp breaker. Use a 12 gauge extension cord that is as short as possible or preferably none at all. Connect your compressor to the washer outlet and start it with the bleed valves open and see if that works. If not, there is a problem with the compressor.