oneblondejohn
Member
- Location
- Florida
- Occupation
- Physician
I have an old powermatic table saw, it has been wired to a 20amp breaker with same wiring, running great for 7ish years. It stopped running! I am not an electrician but a rather short inspection showed some very old capacitors - one of the caps had come off one of them (starter I think). I thought it best to replace both capacitors. The run capacitor had no markings. The first salesperson at granger could not get a reading, then another guy said he got "enough of a reading" and sold me a run capacitor that he said would work. (It was MUCH smaller than the original, but I was told that just happens sometimes, and they know more than I do).
I came across this thread and noted a couple of interesting statements that could explain my dilemma.
"Single phase motor tripping breaker - bad capacitor or centrifugal switch?"
#1. I don't know if I have the correct size run capacitor, or if it would cause my saw to trip a 20amp breaker with no load. The information plate is on the top of the motor - VERY difficult to read but it is a Baldor Industrial Motor: Spec 35E06X515, Name 145TCF283. In searching I could find no information on what size run capacitor it "should have". The motor is no longer produced. If anyone has access to this information it would be very helpful. 3HP I believe I saw on the tag.
#2. Humorously - I noted in the prior thread a statement about grease, and if "something doesn't work add more grease". Well I was in there, and there are grease fittings at the bearings front and back of motor. I know it hadn't been greased in at least 7 years so I gave it a couple of squeezes and it seems to run smoother, so I gave it a couple more squeezes. I probably gave each bearing 8 full pumps. That is probably too much - I never know how much grease to use. If it is, is there a way to fix the problem? Would excess grease leak into the motor and cause a short?
#3. The wiring does run under the floor and I do have (mice or rats). My workshop is a WWI barracks that was moved to the property that I now own. I just consider the critters company.
#4. I am wondering about the centrifugal switch as well. Could the grease that I pumped in there have made its way to the centrifugal switch, and now the grease is causing it to short? If the centrifugal switch is shorted then certainly that would cause it blow the breaker.
I am going to look under my shop and check the wires first. That will only take a minute. Then I am going to check the centrifugal switch.
Can anyone give me an idea of what size run capacitor should be in this saw? I believe it is 3HP.
Any other ideas would be greatly appreciated.
Thanks
I came across this thread and noted a couple of interesting statements that could explain my dilemma.
"Single phase motor tripping breaker - bad capacitor or centrifugal switch?"
#1. I don't know if I have the correct size run capacitor, or if it would cause my saw to trip a 20amp breaker with no load. The information plate is on the top of the motor - VERY difficult to read but it is a Baldor Industrial Motor: Spec 35E06X515, Name 145TCF283. In searching I could find no information on what size run capacitor it "should have". The motor is no longer produced. If anyone has access to this information it would be very helpful. 3HP I believe I saw on the tag.
#2. Humorously - I noted in the prior thread a statement about grease, and if "something doesn't work add more grease". Well I was in there, and there are grease fittings at the bearings front and back of motor. I know it hadn't been greased in at least 7 years so I gave it a couple of squeezes and it seems to run smoother, so I gave it a couple more squeezes. I probably gave each bearing 8 full pumps. That is probably too much - I never know how much grease to use. If it is, is there a way to fix the problem? Would excess grease leak into the motor and cause a short?
#3. The wiring does run under the floor and I do have (mice or rats). My workshop is a WWI barracks that was moved to the property that I now own. I just consider the critters company.
#4. I am wondering about the centrifugal switch as well. Could the grease that I pumped in there have made its way to the centrifugal switch, and now the grease is causing it to short? If the centrifugal switch is shorted then certainly that would cause it blow the breaker.
I am going to look under my shop and check the wires first. That will only take a minute. Then I am going to check the centrifugal switch.
Can anyone give me an idea of what size run capacitor should be in this saw? I believe it is 3HP.
Any other ideas would be greatly appreciated.
Thanks
