Electric motor question on table saw.

[Karl Card]

I have a Delta/Rockwell 12/14 table saw with a 7.5 hp single phase motor installed. The motor quit working and I found out the start and run capacitors were bad. So bad that the wire connectors fell off in different places. The run cap I can read the specs on it and should be very easy to find but the start caps I have absolutely nothing to go by. There is not a plate on the motor displaying the brand, specs etc. All I know is that it is a 7.5 hp single phase. Does anyone know how to formulate what start caps I need? The run cap is csc 25uF 370 VAC. then I have 2 start caps, that is where the problem comes in.
I have googled and googled again trying to find a chart or something, it is possible I may have overlooked a web page but I am finding nothing that makes sense to me. The 3 amp and 6 amp numbers i posted earlier were wrong. Those numbers are for thermostat rating.

[Josko Catipovic]

A bit tough to get 7.5 hp out of 3A, 220V. Maybe 30A?

[Jacob Reverb]

A bit tough to get 7.5 hp out of 3A, 220V. Maybe 30A?

Maybe the motor has an efficiency rating of 766%!

[Jerry Wright]

Snark didn't answer the OP question.

[Josko Catipovic]

Snark didn't answer the OP question.

Caps for 3A/220 and 7.5 HP motors are quite different. Here's a guide to sizing motor capacitors:
https://inspectapedia.com/electric/M..._Selection.php

[Jeff Bartley]

Karl,
I would recommend taking the motor to a motor shop. And it's definitely 30 amp, not 3.
And make sure the wiring in your shop is sized appropriately for the load!
Hope this helps.
Jeff

[Gary Ragatz]

Outside my bailiwick, but here's a web site that might be of some help:

https://inspectapedia.com/electric/M..._Selection.php

[Mike Cutler]

Here is another source, but you'd probably be better off contacting a shop based on the wiring conditions you found.

https://www.electricneutron.com/elec...acitor-sizing/

[Art Mann]

Pardon me if I offend. It is utterly impossible for a motor to put out 7.5 horsepower with an input of 230VAC at 3A. The fact that the original poster doesn't already know this leads me to believe he doesn't have the necessary knowledge to repair the motor without considerable risk to his own safety and the integrity of the motor. I strongly recommend he hire someone to do the repairs for him. Sometimes it is just worth it to pay someone who knows what they are doing.

[Bill Dufour]

Would it have one run cap for 120 and another for 240? Or maybe connect them a different way for the different voltages. IF this is a European motor they reverse the meaning of decimal and commas in math, like amps. I think Asian motors use the comma and decimal point like the USA

[Karl Card]

I have the ability to read and learn. M 56 yrs old and made it this far in life by asking questions and reading. I agree the amps seemed low to me but that is one of the reasons why i posted in the first place. I need information not negativity. I assure you my breakers and wiring are far above what is needed to run this.

[Karl Card]

All is good. I finally found the info I needed. Thanks to those that replied with positive info. I got lucky and with a little research found out this motor is a Baldor 7.5 hp and the cap numbers for run and start. Just to give some of you a little insight, I had never wired a house. Never had put in an electrical socket. In 2009 I bought a fixer upper house. It needed rewired all the way around. I had to have an inspection done. I read the code, talked with several electricians and when the city came out for inspection, the only comment was that everything was great and far above code. I have not had any electrical issues. So yes I respect electric and the harm that it can do. I ask alot of questions but I am not going to back down just because I have never done something before.