GeekEV
Well-known member
Hi guys! If you want to buy adapters for use with this mod, please see this thread:
http://www.mynissanleaf.com/viewtopic.php?f=26&t=3085&start=0
http://www.mynissanleaf.com/viewtopic.php?f=26&t=3085&start=0
wwhitney said:Phil,
I've been following this thread from the beginning and have a few questions about your mod that I haven't seen answered, although I might have missed them:
1) You've more or less said that you consider the exact details of what you replace in the EVSE to be a trade secret, but I'm hoping you could provide a little more info without getting into the trade secrets. Is it correct that you replace the 12V transformer with a switching power supply (like a computer uses)? You also mentioned you replace a handful of other components that aren't rated for 240V. Are these basic circuit elements like resistors, capacitors, etc., or is there more to it?
2) Your mod involves partially depotting the circuit board inside the EVSE. Do you repot the board afterwards, or does the water resistance of the modified EVSE depend entirely on the outer shell of the case? Or do I misunderstand the reason the original circuit board was potted?
3) You mentioned that the OEM EVSE does not implement part of the J1772 spec, a "diode test". What is that and does your modified EVSE implement it?
4) One customer provided you with an EVSE without the plastic plugs in the bottom covering the screws holding the outer shell together. The returned EVSE had these screws covered with hot-melt glue. Was this a special endeavor to ensure the water resistance of the outer shell without the plastic plugs, or is this something you do to all your mods to make opening the modified EVSE more difficult?
Thanks,
Wayne
kolmstead said:If I were still waiting for my LEAF, I'd think seriously about getting the EVSE waiver from Nissan and having Ingineer turn my L1 EVSE into an L2 unit once I got the car. Since it's too late for me to do that, I am happy knowing that I have a backup L2 EVSE in case my AV unit fails. Redundancy is a good thing!
-Karl
If you go ahead with a quick220, please let us know how it works out!mwalsh said:Am now also considering the purchase of a quick220 unit, to make traveling life even easier!
Me too. I could drive 50 miles to Claremont, charge 4-5 hours at 240 volts at my sister's house while hiking Mount Baldy, then drive back to L.A. Might make it charging at 120 volt, depending on freeway driving speed, but this will give a better margin of safety.mwalsh said:Am now also considering the purchase of a quick220 unit, to make traveling life even easier!
Stoaty said:Me too. I could drive 50 miles to Claremont, charge 4-5 hours at 240 volts at my sister's house while hiking Mount Baldy, then drive back to L.A. Might make it charging at 120 volt, depending on freeway driving speed, but this will give a better margin of safety.
Adding a 240V/20 amp receptacle (such as an L6-20 that the modified EVSE can connect to directly) is the same as adding a regular 120V/20 amp receptacle in terms of the wiring. You just use a dual-pole breaker at the panel and a 240V receptacle at the end. So it can be done with NM 12/2, not conduit, barring unusual residential conditions. If the desired receptacle location is only a few feet away from your panel, then it may well be possible to fish the wire to the panel within the wall without opening up the wall.DaveinOlyWA said:ok, i have breaker space, what is the requirements for putting in a plug? is it that much? i am guessing conduit (tearing up the wall is not an option but would only have to be a few feet away which is nice.
Bassman said:Ingineer,
Can a 5000 watt step up transformer be used to power your modified L1/L2 EVSE? I see a 5000 watt Seven Star Step up Transformer Voltage converter that says it can be operated continuous at 80% and will make a 120 volt outlet a 240 volt.
wwhitney said:Adding a 240V/20 amp receptacle (such as an L6-20 that the modified EVSE can connect to directly) is the same as adding a regular 120V/20 amp receptacle in terms of the wiring. You just use a dual-pole breaker at the panel and a 240V receptacle at the end. So it can be done with NM 12/2, not conduit, barring unusual residential conditions. If the desired receptacle location is only a few feet away from your panel, then it may well be possible to fish the wire to the panel within the wall without opening up the wall.DaveinOlyWA said:ok, i have breaker space, what is the requirements for putting in a plug? is it that much? i am guessing conduit (tearing up the wall is not an option but would only have to be a few feet away which is nice.
Cheers, Wayne
No it will not work with a single outlet.Bassman said:Ingineer,
Can a 5000 watt step up transformer be used to power your modified L1/L2 EVSE? I see a 5000 watt Seven Star Step up Transformer Voltage converter that says it can be operated continuous at 80% and will make a 120 volt outlet a 240 volt.
mwalsh said:Stoaty said:Me too. I could drive 50 miles to Claremont, charge 4-5 hours at 240 volts at my sister's house while hiking Mount Baldy, then drive back to L.A. Might make it charging at 120 volt, depending on freeway driving speed, but this will give a better margin of safety.
We would drive the 67 miles down to Naomi's daughter's house in Carlsbad, typically for a long dinner (like a Thanksgiving or Christmas Eve) or family party, so enough time to charge back to a comfortable place with 220v but not enough to trickle with 110v. Now I had thought I could simply ask her or her husband to check their service panel for space and then I could buy an appropriate breaker, but the quick220 would mean less fuss for everyone.
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