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  #21  
Old 09-03-2019, 12:23 AM
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Quote:
Originally Posted by allessence View Post
I ran a series of experiments:

Distribution block;

1 212v, 2)204, 3)120, 4)13o anneal switch open (normal position)
1) 212, 2)200 3) 117, 4) 220V Closed (In use or button depressed circuit closed)
1)211, 2) 211, 3) 117, 4) 117 Wire disconnected from anneal switch and no continuity from wire to motor.

210V at 4amps with motor running thru wire lead connected to anneal switch.
I assume you are measuring from ground.

From your readings L1 maybe open......
Do this
turn off all power to the saw
disconnect L1 and L2
lay them somewhere on something insulated so you can measure their voltages.

power up.

measure the voltage across L1 to L2, should be 240 volts AC volts
From the metal saw cabinet/ground to L1 120 volts
L2 should also be 120 volts from cabinet/ground.

---
While every thing is powered off I want you to measure for ground leakage like I out lined in post #20
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  #22  
Old 09-03-2019, 01:24 AM
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Originally Posted by allessence View Post
if I detach the wire from the distribution block the motor still runs.

<If you are talking about the wire from the motor to the block #2
then your are saying the motor runs from the only one wire connected?
if that is the case it would likely be getting unwanted power from a ground short.>


It's only when the wire is disconnected from the Anneal switch that it stops running.

this is the confusing part.

From what I understand. and electric motor with the same <VOLTAGE> on both sides will not run..

< yes but one end of a Car's battery is connected to ground chassis.>

in this case you can not go by measuring voltages from metal ground in theory L1-L2 have a ground, but the supply to the motor does not use a ground or should not.



It needs to have a lower voltage on one side to actually run.

<it does but you should not be measuring from ground for motor voltages.
The motors supply voltage is from H1 and H2 transformers coil (if its working right)>


Same principal in an auto motive setup for lights. Not sure if it applies here.
yep.....Bold
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Last edited by GWIZ; 09-03-2019 at 01:31 AM.
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  #23  
Old 09-03-2019, 09:05 AM
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And don't think just because something worked for 20 years it won't develop a short to ground.
My buried line to the old house welded itself together after 20 years service, luckily it waited til we moved out.
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  #24  
Old 09-03-2019, 09:32 AM
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Originally Posted by Ironman View Post
And don't think just because something worked for 20 years it won't develop a short to ground.
My buried line to the old house welded itself together after 20 years service, luckily it waited til we moved out.

I think that this is actually what has happened.

Problem is locating it. Is it the motor outer coil? One side is bad.

I believe the electric s for the motor ground thru thecase.
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  #25  
Old 09-03-2019, 03:53 PM
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Quote:
Originally Posted by allessence View Post
I think that this is actually what has happened.

Problem is locating it. Is it the motor outer coil? One side is bad.

I believe the electric s for the motor ground thru thecase.
we use an ohm meter to confirm ground problems.

you confirmed the motor is pulling 4 amps
that tells me "if" there is a ground short it is a pretty hard-short/strong, so using the 2000 ohm scale on the meter should find it.
general rule we use the meg-ohm scale to check for the weakest leakage.

your motor looks taped up pretty well, in-less one of the 4 coils are loose in order to grind into the metal case it is very-very unlikely the coils are an issue.
it may be more of a pinched motor wire.... or just as the wire exits the motor coils where it may short out.
.
more of the anneal switch shorted to ground from its back side screws......
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  #26  
Old 09-03-2019, 06:48 PM
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22.4 ohms on auto ranging from wire from anneal switch to motor outer ring. "

I thought the same thing on the anneal switch backside screws so pulled it out and cleaned it and there are no screws on the backside sticking up or out.
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  #27  
Old 09-03-2019, 06:59 PM
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L1 and L2 off this transformer are only 120volts. L3 is 240

The
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My attack thoughts are attacking my invulnerability.

I'd like to think of something smart, but I don't want to hurt myself.

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  #28  
Old 09-03-2019, 08:06 PM
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Quote:
Originally Posted by allessence View Post
22.4 ohms on auto ranging from wire from anneal switch to motor outer ring. "
.
That is not good.

22.4 ohms to ground.

You will have to systematically disconnect wires until your meter does not read a short.
disconnect the two motor wires and check the motor out of the circuit.

Just a reminder never check resistances when the machine has any power. your meter may not last long if you probe a power wire on the ohm scale.
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Last edited by GWIZ; 09-03-2019 at 08:27 PM.
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  #29  
Old 09-03-2019, 08:38 PM
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I will check them tomorrow. I've been trying to get the results you ask for right off, but seems time slips away.

I will get the measurements for you tomorrow with both wires disconnected at the motor.
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Yeti Esseti Aka running welder on 3phase.
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  #30  
Old 09-04-2019, 07:12 PM
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So I checked and there is no reading or I should say 0.00 ohms for each wire. Except the one that is attached to the anneal switch which was 22.4 ohms to ground.
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If I defend myself I am attacked.

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My attack thoughts are attacking my invulnerability.

I'd like to think of something smart, but I don't want to hurt myself.

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Yeti Esseti Aka running welder on 3phase.
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