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Discussion Starter #1 (Edited)
Just tested my water conditioner outlet in the garage. OEM EVSE lights up. Took a reading and it shows 196v. Have not tested it. Will this work for charging?

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196 volts just doesn't seem right. That's not a correct voltage from my limited understanding of voltages present in US homes. Try a different meter ..... ?????
 

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Definitely a 5-20. A 6-20 outlet would have a horizontal slit on the right, not vertical.

196V is highly suspicious. If true (and not a bad meter), that's dangerous on a 5-20 outlet. That's a good way to blow things up. Fortunately, your EVSE and car will be fine, but don't plug in a normal 120V appliance!
 

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meter might be fine. but reading across hot and neutral while the device is plugged in might be the issue.
Ok, you've piqued my curiosity. What is going on inside that EVSE that would boost the apparent voltage like that, especially without the car plugged in? I know adding to an active circuit will mess with resistance measurements, but Voltage? Do explain.
 

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Ok, you've piqued my curiosity. What is going on inside that EVSE that would boost the apparent voltage like that, especially without the car plugged in? I know adding to an active circuit will mess with resistance measurements, but Voltage? Do explain.
I was just speculating that it might cause the digital meter to read incorrectly. Some kind of current loop or something. But the more I think about it, the meter has to be faulty. Low battery?
 

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Discussion Starter #10
Agreed, probably low battery in the multimeter... Similar to Bolt going haywire when 12v battery is too low.

 

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Discussion Starter #12 (Edited)
How is he getting 2 kW charge rate then? Not possible at 120v and 12a.

This mystery needs resolution.
My house may be on an ancient pyramid site. During spring/fall, I use 7-10KWh a day and max 40KWh during the hot summer. Other houses are use 20-30KWh a day during spring/fall and 70-100KWh a day during summer. IDK. :)
 

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I've had meters that had bad ranges, especially Radio Shack ones. Try your meter again on a known good NEMA 5-15 outlet using the 200V range, then try again on the 600V range. They should be roughly the same, +/- a few Vac. If the 600V reading shows more than 20 Vac difference from the 200V range, your meter is faulty. Also, are your probes clean? I've been handed some pretty tarnished probes before and simply rubbing the probes against whatever you're measuring can break through the tarnish and yield better measurements. I only did this for measuring resistance, however. When rubbing the probes, don't go overboard and accidentally bridge contacts. I found out the hard way...crossbar (I mean crowbar, **** I'm old) protection worked though!

EDIT: No, it wasn't a crowbar protection, it was something else. Wish I paid more attention in electronics class.
 
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