We have a 50amp 3 prong outlet at work. Similar to an Electric Dryer Plug.
When we use a meter and measure across to 2 outside legs we get 240VAC.
Then when we measure from one leg to the center we get 137VAC. And when we measure from the other leg to the center we get 108VAC. We normally use this to test run 230-240VAC motors.
What we tried to do was to use the 108VAC like a regular 120VAC outlet.
For some reason when we loaded it up the voltage would drop down to almost Zero. No fuses blew or anything. Once we remove the load the meter registers 108VAC again.
Any idea of what kind of arrangment this may be and why it won't work????
When we use a meter and measure across to 2 outside legs we get 240VAC.
Then when we measure from one leg to the center we get 137VAC. And when we measure from the other leg to the center we get 108VAC. We normally use this to test run 230-240VAC motors.
What we tried to do was to use the 108VAC like a regular 120VAC outlet.
For some reason when we loaded it up the voltage would drop down to almost Zero. No fuses blew or anything. Once we remove the load the meter registers 108VAC again.
Any idea of what kind of arrangment this may be and why it won't work????