That was my bad...I looked cross eyed at the TM and saw two different NSN's. They are the same breaker for the 002a and 003a. I verified this with a spare output box I have for an 002a sitting in my garage and the new 003a breakers I ordered. They are the same.That is what I would have figured too, but the parts TMs list them as having the same NSN, so I thought it was controlled by R-3 setting. Is the TM wrong? (would not be the first time). Is there a way to change set point? Others seem to have agreed it is the same. I really don't know.
I think you may have missed the point of what I posted above. New or old compressor doesn't change the physics of the motor. I don't think your meter is catching it as it's peak. 39 amps at start-up is way too low for a motor or compresor that has a running load of 12 amps without some kind of soft starter already installed.Thanks for the information . My top priority now is to get serious about the r3 adjustment .
I'm actually happy with just 39 amps at start up. A few years ago it was a lot more from the older units. I believe this number should be easily overcame with the mep002 , considering it falls so fast to 12 amps .
No offence taken, I love a good discussion and hopefully the other members can gain some knowledge from the things said here. Not arguing, but the next statements you made are just that, your opinion. Let me give you some facts.I wasn't going to get into it and fully respect your position on these subjects but, please allow me to say a few opinions.
If you lined up 20 motors from the same manufacturer you'll find almost all of them to be dead on with one another under the same running conditions. There are a few minor external factors that will effect them such as bearing friction, but the effects will be minimal. There will be a difference if you lined up 20 motors from 20 different manufactures, but we need to compare apples to apples. Now, there are the manufacturing irregularities that will pop out an oddball every now and then and typically this shows up as a bad motor right out of the crate.Manufacturers have to make the tag for every motor based on testing performance from more than one motor , ending with worst case scenarios . Every motor doesn't start and run exactly the same as the next . If you lined up 20 of them they will all have different readings under exactly the same conditions. Just like the stickers on new cars about mpg. Even if a motor is locked up everyone will show different readings.
Actually, that doesn't change hardly at all. I challenge every member here to go out and check the Hz reading coming into your house all over this country and you'll find them all to be at 60 Hz and voltages to be relatively close as well. For the power grid to work, this is an absolute, the frequency needs to be exactly the same throughout and the voltage generated needs to be very close. If it is not, one power station would take all of the load and another one running at a lower Hz would not take any (or very little)The motor manufacturers have a chart also showing the different amp draws based on voltages and hertz being applied from high to low and the results , because they fluctuate and are definitely not the same in every city.
As I said above, your 5 rebuild motors being the same manufacturer and rewind shop (compare apples to apples), would be almost exactly the same. If you took a Baldor motor rewind from XYZ armature shop and a Leeson motor rewind from Homewindingshop.com and a US Motors rewind from 3D electric, yes, they would give you different readings under the same conditions. But they would still be pretty close since they have a NEMA standard to follow.Just these things alone make the tags on motors and compressors just a general guideline and not an absolute .
If you rebuilt 5 motors every motor would give different readings in the same environment.
And every person is always boasting about how their generator is running at 130% capacities and doing great , so I think the breakers should also have the same capability of starting 30 % more than rated . I've always been taught the military equipment is built way better than anything else in its class.
Again all this is my opinion only . I fully respect yours.
Don't take offence please .
These breakers are also 30 years old. Things get weak.
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