Also electrician would not go anywhere near the back of the motor. He did all testing on the lines leaving the timer box headed to the motor. The motor is 5 feet away does that invalidate anything?
Keep blowing pump motors pool guy says call electrician
- Thread starter Janhillatx
- Start date
Yes.
Voltage needs to be checked Line-to-Line and not each line to ground.
The Line-to-Line voltage at the pump while the pump is on should be at least 230 volts.
Volts x Amps = Watts, but you really do not need to know the watts.
You just need to know the volts and amps.
In some cases, you might want to check the Power Factor, but that is rarely necessary.
Possibly.
The voltage leaving the timer might be ok and at the motor terminals it might be low due to bad wiring.
Can you show the motor wiring compartment?
That is about 1.6 times too high, so it seems like a problem.
Max is 6.4, so definitely too high.
That can happen a little bit, but the amps should never go over the label Maximum.
We need a voltage at the motor terminals with the pumps on.
You can, but be careful testing live voltage.
You can get alligator clips that will allow you to clamp on the terminals before applying power so that you are not touching the leads when power is applied.
It looks like the insulation is cracking, so you might want to clean that up.
Test voltage Line-to-Line at the two terminals if you can do it safely.
Test voltage Line-to-Line at the two terminals if you can do it safely.
Alligator clips allow you to put the test leads on the terminals with no power and then turn on power while you are not touching the leads.
https://www.homedepot.com/pep/TRIPLETT-Standard-Test-Leads-TL005/314525015
https://www.homedepot.com/pep/TRIPLETT-Standard-Test-Leads-TL005/314525015
I will go get the fluke clips tonight so that I can stand back and test things tomorrow at both pumps with and without load. Meanwhile here is how the booster is wired. It looks ok except I will get some new wire and spades from the source line before I test tomorrow.
Attachments
Electronic Specialties Test Leads with Screw Off Alligator Clips ESI629 - The Home Depot
These are 48 in. test leads with threaded, screw-off alligator clips for a more secure connection. Maximum of 10 Amp. They are CATII 1,000-Volt safety rated.
www.homedepot.com
Southwire Replacement Test Leads with Alligator Clips 58292940 - The Home Depot
Provide the best and ultimate addition to your electrical application by selecting this affordable Southwire Replacement Test Leads with Alligator Clips.
www.homedepot.com
https://www.homedepot.com/pep/TRIPLETT-Standard-Test-Leads-TL005/314525015
You can get a lead set or just the clips.
Make sure that the leads or clips work with your meter or leads.
Make sure that the leads or clips work with your meter or leads.
To test with no load, you need to test at the timer Line terminals (#1 and #3 (red dots)) with the pump off.
However, this is not as important as testing the voltage at the pump terminals under load.
At long as the voltage under load is at least 230 volts, the voltage is probably ok and you do not need to test for line voltage with no load.
If the voltage is below 230 volts under load, then you need to test the no-load voltage at the line terminals.
However, this is not as important as testing the voltage at the pump terminals under load.
At long as the voltage under load is at least 230 volts, the voltage is probably ok and you do not need to test for line voltage with no load.
If the voltage is below 230 volts under load, then you need to test the no-load voltage at the line terminals.
I do see a problem at the booster pump. All of the terminals are spade including where the electricity line in connects to the pump. I cannot find a female spade connection that goes on the solid wire to connect to the power line. All of the female spades are intended for stranded wire. How are you supposed to get a secure connection to those spades with solid electric lines? Is there a stranded wire I should attach to the connection. It seems destined to failure from weak connection as this was installed. TIA