justoneman
Posts: 99
Joined: Sun Apr 09, 2017 6:09 pm

Re: Duosida EVSE

Thu May 11, 2017 7:31 pm

8:54pm


Image


So 5 bars in less than 3 hours.

justoneman
Posts: 99
Joined: Sun Apr 09, 2017 6:09 pm

Re: Duosida EVSE

Thu May 11, 2017 9:18 pm

11pm


9 bars charged in 5 hours. Sure it could really be 8.5 bars. maybe its 9.5 bars.


Image

JoeS
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Re: Duosida EVSE

Fri May 12, 2017 8:34 am

justoneman wrote:9 bars charged in 5 hours. Sure it could really be 8.5 bars. maybe its 9.5 bars.
OK, let's consider this -

My rule of thumb (very coarse) is -
4 Bars/5hrs @ 8A
6 Bars/5hrs @ 12A

Using this progression, 9 Bars/5hrs ==> 18A :o :shock:

So, maybe 16A may not be too far off the mark as the max the car can draw.

justoneman, perhaps either measure the temperature or at least put your hand on all the connectors (and maybe the circuit breaker itself?) to make sure nothing is running hot. Also, you might look up the circuit breaker specifications and see how much overcurrent it can take for how long.

My guess is that the current is probably close to 15A. Please do measure it as soon as you can and do be careful, as I think you might indeed be overloading that circuit. :cry:
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justoneman
Posts: 99
Joined: Sun Apr 09, 2017 6:09 pm

Re: Duosida EVSE

Fri May 12, 2017 9:24 am

JoeS wrote:
justoneman wrote:9 bars charged in 5 hours. Sure it could really be 8.5 bars. maybe its 9.5 bars.
OK, let's consider this -

My rule of thumb (very coarse) is -
4 Bars/5hrs @ 8A
6 Bars/5hrs @ 12A

Using this progression, 9 Bars/5hrs ==> 18A :o :shock:

So, maybe 16A may not be too far off the mark as the max the car can draw.

justoneman, perhaps either measure the temperature or at least put your hand on all the connectors (and maybe the circuit breaker itself?) to make sure nothing is running hot. Also, you might look up the circuit breaker specifications and see how much overcurrent it can take for how long.

My guess is that the current is probably close to 15A. Please do measure it as soon as you can and do be careful, as I think you might indeed be overloading that circuit. :cry:

Sure but the reality is I may have photo-ed the bars when starting the charge and perhaps a bar appeared seconds after the photo. Then the last bar could have just appear seconds before the last photo. Could very well be 7.5 to 8 bars were added total. Given the unit is rated to draw 10a or 13A or 16A is it not likely it is drawing 13A?

justoneman
Posts: 99
Joined: Sun Apr 09, 2017 6:09 pm

Re: Duosida EVSE

Fri May 12, 2017 1:18 pm

JoeS wrote:
justoneman wrote:9 bars charged in 5 hours. Sure it could really be 8.5 bars. maybe its 9.5 bars.
OK, let's consider this -

My rule of thumb (very coarse) is -
4 Bars/5hrs @ 8A
6 Bars/5hrs @ 12A

Using this progression, 9 Bars/5hrs ==> 18A :o :shock:

So, maybe 16A may not be too far off the mark as the max the car can draw.

justoneman, perhaps either measure the temperature or at least put your hand on all the connectors (and maybe the circuit breaker itself?) to make sure nothing is running hot. Also, you might look up the circuit breaker specifications and see how much overcurrent it can take for how long.

My guess is that the current is probably close to 15A. Please do measure it as soon as you can and do be careful, as I think you might indeed be overloading that circuit. :cry:

I will check it out this evening. If it is a problem I will pull new wires through the conduit and make it a 20 amp circuit.

justoneman
Posts: 99
Joined: Sun Apr 09, 2017 6:09 pm

Re: Duosida EVSE

Fri May 12, 2017 4:35 pm

JoeS wrote:
justoneman wrote:9 bars charged in 5 hours. Sure it could really be 8.5 bars. maybe its 9.5 bars.
OK, let's consider this -

My rule of thumb (very coarse) is -
4 Bars/5hrs @ 8A
6 Bars/5hrs @ 12A

Using this progression, 9 Bars/5hrs ==> 18A :o :shock:

So, maybe 16A may not be too far off the mark as the max the car can draw.

justoneman, perhaps either measure the temperature or at least put your hand on all the connectors (and maybe the circuit breaker itself?) to make sure nothing is running hot. Also, you might look up the circuit breaker specifications and see how much overcurrent it can take for how long.

My guess is that the current is probably close to 15A. Please do measure it as soon as you can and do be careful, as I think you might indeed be overloading that circuit. :cry:

OK so I came home and put the car on charge. After an hour I checked out the outlet for warmth. Its not warm at all. I went into the house to check the breaker. the breaker is ever so slightly warm. A couple of other breakers are also a little warm. I checked the conduits coming from the main service and one is also a little warm to the touch. I will open up the service and see what is heading where. If the wires are only #14 on the garage circuit, I will replace them. I will make it a 20amp circuit.

thomash85715
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Re: Duosida EVSE

Fri May 12, 2017 9:00 pm

To summarize this so far: Justoneman is plugging a duosida rigged for level 1 120V into a 20A outlet which is downstream from a 15A breaker which is only barely warm after several hours. The extrapolated current draw based on how fast the car's gauge fills up could be 16A in fact? Why is breaker not hot or tripping then?
I ordered a duosida with a 10-30 plug on it from a guy in Gilbert AZ hoping to cut my level 1 time by more than half. Will let the forum know how that goes. I do have a working clamp amp meter to determine the actual draw once it gets here and is operating from my dryer plug. It shows ~17A on each hot wire when dryer is running on normal heat. Double handle breakers each say 30A on them in my panel.
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justoneman
Posts: 99
Joined: Sun Apr 09, 2017 6:09 pm

Re: Duosida EVSE

Fri May 12, 2017 9:37 pm

thomash85715 wrote:To summarize this so far: Justoneman is plugging a duosida rigged for level 1 120V into a 20A outlet which is downstream from a 15A breaker which is only barely warm after several hours. The extrapolated current draw based on how fast the car's gauge fills up could be 16A in fact? Why is breaker not hot or tripping then?
I ordered a duosida with a 10-30 plug on it from a guy in Gilbert AZ hoping to cut my level 1 time by more than half. Will let the forum know how that goes. I do have a working clamp amp meter to determine the actual draw once it gets here and is operating from my dryer plug. It shows ~17A on each hot wire when dryer is running on normal heat. Double handle breakers each say 30A on them in my panel.
I It must be less than 15A right? Is that not logical? The only other option is a bad breaker. Given that it is not hot I would suspect not. I know the breaker does trip I had popped it before from starting my table saw on that outlet. Regardless I think it is correct that I have a dangerous situation that I need to rectify.

I think you are going to be happy with your purchase. The rate of charge is legit.

kiev
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Location: The Heart o' Dixie
Contact: Website

Re: Duosida EVSE

Sat May 13, 2017 4:31 am

Maybe a voltmeter would help determine if the 20A jack wired to the 15A breaker is really carrying 240V due to wiring 2 single breakers from separate legs in the breaker box?
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justoneman
Posts: 99
Joined: Sun Apr 09, 2017 6:09 pm

Re: Duosida EVSE

Sat May 13, 2017 7:32 am

kiev wrote:Maybe a voltmeter would help determine if the 20A jack wired to the 15A breaker is really carrying 240V due to wiring 2 single breakers from separate legs in the breaker box?

Its not. I isolated it down to the single 15A breaker.

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