ironmanco
Well-known member
I have an EVSE upgrade EVSE and I'm told that when it's programmed to output a certain current, it does exactly that.
The issue I'm running into is that I have two meters hooked up to a 240V circuit and the numbers just aren't matching.
I'm about 2-3A below what the EVSE thinks it's outputting.
I'm using two different meters:
1) Is FLUKE multimeter with a clamp-on ammeter
2) PZEM-004, (http://www.amazon.com/80-260V-BAYITE-PZEM-004-Multimeter-Voltmeter-Transformer/dp/B00YYA014W)
Both read in the same range (on either leg of the 240V circuit) but they are both consistently 2-3A below what the EVSE thinks is going out.
I tried changing the programming of the EVSE (the the leaf being at the same SOC) and it still is off. 16A programmed gets about 14.XX, 22A programmed gets about 19.5A, etc.
And I tested with the SOC at around 23%.
Here's the values of my test (all readings in amps)
PROG BAYITE D-BAYITE FLUKE D-FLUKE
10 9.05 -10% 8.02 -25%
14 12.27 -14% 11.16 -25%
16 14.22 -13% 13.1 -22%
22 19.53 -13% 18.48 -19%
24 21.38 -12% 20.34 -18%
AVG---> -12% AVG---> -22%
So....questions:
* Can both my ammeters be off and by that much?
* What other things can be the cause of this?
Thoughts?
-Andrew
The issue I'm running into is that I have two meters hooked up to a 240V circuit and the numbers just aren't matching.
I'm about 2-3A below what the EVSE thinks it's outputting.
I'm using two different meters:
1) Is FLUKE multimeter with a clamp-on ammeter
2) PZEM-004, (http://www.amazon.com/80-260V-BAYITE-PZEM-004-Multimeter-Voltmeter-Transformer/dp/B00YYA014W)
Both read in the same range (on either leg of the 240V circuit) but they are both consistently 2-3A below what the EVSE thinks is going out.
I tried changing the programming of the EVSE (the the leaf being at the same SOC) and it still is off. 16A programmed gets about 14.XX, 22A programmed gets about 19.5A, etc.
And I tested with the SOC at around 23%.
Here's the values of my test (all readings in amps)
PROG BAYITE D-BAYITE FLUKE D-FLUKE
10 9.05 -10% 8.02 -25%
14 12.27 -14% 11.16 -25%
16 14.22 -13% 13.1 -22%
22 19.53 -13% 18.48 -19%
24 21.38 -12% 20.34 -18%
AVG---> -12% AVG---> -22%
So....questions:
* Can both my ammeters be off and by that much?
* What other things can be the cause of this?
Thoughts?
-Andrew