LeftieBiker
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Re: Using Leaf as emergency power backup - electrical question

Fri Nov 01, 2019 1:38 pm

hmmwv wrote:
Wed May 23, 2018 4:49 pm
The 12V system can only supply 1000W continuously. I bought a 1000W continuous / 2000w surge pure sine wave inverter and use it to power a few appliances (lights,fridge, TV, kettle, etc) during power outage. You really want to have some nice lower gauge cables between the inverter and the 12V battery.

Where do you get the 1000 watt figure? I've read, repeatedly, that it's 1800 watts max DC-DC converter output, and that 1500 watts at the car is a safe maximum draw. Most people seem to get a 2000 watt inverter and then limit the loads to no more than 1500 watts.
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PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

BrockWI
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Re: Using Leaf as emergency power backup - electrical question

Sat Nov 02, 2019 8:31 am

I would strongly suggest a 2000 watt prosine inverter. It will start and run anything that can be plugged in a "regular" outlet. The 1000w unit is nice, smaller, but can't start some larger items, like large fridges, a small compressor or anything with a motor. If your going through that much work and expense make sure it will work for what you need and not have to upgrade later.
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evtifosi
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Re: Using Leaf as emergency power backup - electrical question

Sun Nov 03, 2019 6:17 pm

I am looking at only 1000w due to the fact that we have a detached garage - and a main electrical panel on said garage - but our main house sub panel is in our laundry room on the opposite side of our house. There is not a easy way to power the sub panel, or any of those circuits, from where our LEAF is parked. Based on that I am looking to only power things in our garage during an emergency or a PSPS from PG&E...and 1000w will be more than I will be able to use.
2015 SV Leaf - 1 bar lost as of 1/2019

GaleHawkins
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Re: Using Leaf as emergency power backup - electrical question

Sat Nov 09, 2019 9:23 pm

https://picclick.com/DOSTAR-EV-Chargin ... 539.html

I picked up one of these for $75 but will not plug it into the Leaf DC port until I understand how it could work. The description does not make sense to me but if it worked it would be a nice source of some Leaf power.

Has anyone seen this concept for Leaf as a backup power source?

cwerdna
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Re: Using Leaf as emergency power backup - electrical question

Sat Nov 09, 2019 9:32 pm

GaleHawkins wrote:
Sat Nov 09, 2019 9:23 pm
https://picclick.com/DOSTAR-EV-Chargin ... 539.html

I picked up one of these for $75 but will not plug it into the Leaf DC port until I understand how it could work. The description does not make sense to me but if it worked it would be a nice source of some Leaf power.

Has anyone seen this concept for Leaf as a backup power source?
As I posted in the other thread.
"From a quick look, I don't know what that is but from looking at https://www.ebay.com/itm/362729404539, that's totally useless for a US Leaf. No US Leaf has a port like that.

You can't pull power from the car via J1772. For CHAdeMO, it's going to be almost 400 volts DC. There's nothing in that handle or power strip that's going to convert that down to 120 volts AC."

I think you wasted your $.

Since the eBay listing said "Meet 62196-2 IEC 2010 SHEET 2-IIe standard" and the plug resembled Mennekes Type 2, I looked at https://en.wikipedia.org/wiki/IEC_62196#Contents_2 and noticed "Another similar but different design is described by the Chinese standard GB/T 20234.2. " Yes, I've seen Chinese connectors and they seem the opposite of Mennekes Type 2 in terms of gender/which side has pins.

Take a look at GB/T 20234.2-2011 AC vs. IEC 62196 Type 2 at http://www.ev-institute.com/images/Plug ... map_v5.pdf.

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LeftieBiker
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Re: Using Leaf as emergency power backup - electrical question

Sat Nov 09, 2019 9:44 pm

It looks like someone had some useless-in-North America type 2 plugs, and some Belkin power strips, and just spliced them together. It could be a novel way to start a fire, but more likely it will do nothing whatsoever, as Cwerdna notes. Sorry.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

cwerdna
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Re: Using Leaf as emergency power backup - electrical question

Sat Nov 09, 2019 10:02 pm

My related response was at viewtopic.php?p=571910#p571910.

Now that I think about it more, the useless device that Gale posted might be useful for getting power out of an EVSE that has that connector or a vehicle with that port that can actually output power. I didn’t study the port carefully and don’t know much about Mennekes type 2 nor Chinese GB/T plugs for AC charging.

I quickly found this video showing the 2 connectors on Chinese-market Teslas: https://youtu.be/diSAwAVVgOs. Presumably, these are both GB/T connectors for DC and AC charging, respectively.

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Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

LeftieBiker
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Re: Using Leaf as emergency power backup - electrical question

Sat Nov 09, 2019 10:26 pm

Now that I think about it more, the useless device that Gale posted might be useful for getting power out of an EVSE that has that connector or a vehicle with that port that can actually output power.
That is the business end of an EVSE so I don't see how the first scenario would work. Yes, if your EV has a type 2 or Chinese similar port it may be possible to get power through it in Europe or China, but in North America it won't fit anything.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Evoforce
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Re: Using Leaf as emergency power backup - electrical question

Sun Nov 10, 2019 1:39 am

evtifosi wrote:
Sun Nov 03, 2019 6:17 pm
I am looking at only 1000w due to the fact that we have a detached garage - and a main electrical panel on said garage - but our main house sub panel is in our laundry room on the opposite side of our house. There is not a easy way to power the sub panel, or any of those circuits, from where our LEAF is parked. Based on that I am looking to only power things in our garage during an emergency or a PSPS from PG&E...and 1000w will be more than I will be able to use.
I use a 2000 watt inverter and it works great. I believe having more than what you think you might need as sometimes you possibly could use more. I have even used one Leaf to emergency charge the other Leaf.
*2011 Leaf 1 bought 2/28/15 @ 28,000ish mi 10 bar (8 bars @ 11/25/15 @ 37,453 ) (New lizard @ 39,275 mi @ 1/20/2016) Now 52,166 mi.
*Tesla Model S 61,000 mi
*2011 Leaf 2 bought 4/28/15 @ 24,000ish mi 12 bar (new lizard Dec. 2014 @ 22,273 mi) Now 35,485 mi

evtifosi
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Re: Using Leaf as emergency power backup - electrical question

Mon Nov 18, 2019 12:36 pm

I completed this project on Saturday - just in time for a possible PSPS by PG&E Wednesday... :shock:

The only thing I did differently than the original post I found (the one I posted the the link to earlier), is that I used a Red connector since I was able to get that one quickly, versus using a Yellow (12V) connector...

Since I will be the only one using this I don't see much of an issue, and I will remove it from the car when it is sold.

Here is a quick photo showing the wiring to the battery.


Image
I hooked it up to a power strip that has a treadmill, a wine cooler, mini under-counter fridge, and some various battery chargers attached to it as a test - everything powered without issues...
Last edited by evtifosi on Mon Nov 18, 2019 5:52 pm, edited 1 time in total.
2015 SV Leaf - 1 bar lost as of 1/2019

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