radiotron
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Joined: Mon Jan 20, 2020 1:15 pm
Delivery Date: 31 Dec 2019
Leaf Number: 319240

What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 11:40 am

I have A Nissan Charger 220 volts that the dealers used to sell
I have had it for 5 years and use a dedicated 220 line from the Circut breaker box
with a 30 amp Breaker it worked Fine on my 2015 leaf
Now that i have a Leaf Plus should i Install a 50 amp breaker
To speed up the charging??

LeftieBiker
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Location: Upstate New York, US

Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 2:32 pm

First, 240 volts is now the grid standard for home wiring, along with 120 volts.

Second, you need to find out how many amps your existing charger can use. If it is already "maxed out" then there is not a lot of point in upgrading the wiring unless you also buy a new charging station. (The actual charger is in the car.)

Third, while a higher output charging station will charge the ePlus faster (as long as your old station isn't already giving the car all the amperage it can handle), do you need faster charging? If you have, say, a 24 amp charging station, you can only go up to 27.5 amps charging rate anyway - that's the maximum the car can use.
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.

radiotron
Posts: 26
Joined: Mon Jan 20, 2020 1:15 pm
Delivery Date: 31 Dec 2019
Leaf Number: 319240

Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 3:20 pm

I don't have any information on the charger no paperwork came with it
I bought it used on e bay its the round charger and says Nissan on it its white
Its the Charger Nissan dealers used to sell for $1000.00 in fact when
I bought the S Model the Dealership had the same charger on the wall
for display purposes it worked well with the 2015 model
But seems slower on the S plus model must be because the battery is twice the size I'm guessing
It works ok its just slower with this newer car plus it has been very cold and i know that affects it

goldbrick
Posts: 1107
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 3:22 pm

The breaker needs to be sized to protect the wires of the circuit it is connected to. Period. A 30A breaker will probably be using 10 AWG wire. Connecting 10 AWG wire to a 50A breaker is against any and all electrical codes and could potentially cause a fire. If you don't understand this, I'd hire an electrician to take a look at your setup before doing anything.

Are you sure the EVSE is 240V? I didn't know Nissan supplied anything but 120V EVSE's until the 2018 model year.

goldbrick
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Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 3:26 pm

The plus models have a battery that is more than twice the size of the 2015 Leafs. If the EVSE is supplying the same power (most likely case) then the SOC % will increase at less than half the rate on the plus car as on the 2015. Eg, if the EVSE supplied 3 kW then in 1 hour the SOC would (nominally) change by 3/24 = 12.5% on the 2015 but only 3/62 = 4.8% on the plus. The battery is bigger on the plus so it will take longer to fully charge than the 2015, assuming the same rate of charge from the EVSE.

LeftieBiker
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Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 4:07 pm

I believe that there is a Nissan-branded L-2 charging station that was sold by Nissan dealers. I don't know the amp rating for it. I just did a quick search and can't find a listing for it.
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.

radiotron
Posts: 26
Joined: Mon Jan 20, 2020 1:15 pm
Delivery Date: 31 Dec 2019
Leaf Number: 319240

Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 6:10 pm

My Charging unit did not come with the car
Its a Unit sold By Nissan Dealers Separately i bought it used and have no Paperwork for it
I ran 220-240 Line For It From The 200 Amp Service In The Basement
To the charging unit It with the Proper wire i bought at an electrical supply outlet
The wire alone was over $200.00 to buy in 2015 Its Orange My Charger
Is outside the Next to the Back Door Of My walk in Basement Mounted On the House
I have used it for 5 years with No Problems i was just asking a simple question about
Breaker size and thought the Plus Models needed a bigger Breaker Thats all
I'm not an electrician but have done a lot of wiring in my Homes
Previous and Current Homes that i have lived in no worries i will figure it out
Thanks all

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Nubo
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Location: Vallejo, CA

Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 7:04 pm

radiotron wrote:
Tue Jan 21, 2020 11:40 am
I have A Nissan Charger 220 volts that the dealers used to sell
I have had it for 5 years and use a dedicated 220 line from the Circut breaker box
with a 30 amp Breaker it worked Fine on my 2015 leaf
Now that i have a Leaf Plus should i Install a 50 amp breaker
To speed up the charging??
A larger breaker will do nothing to increase the charge rate between your EVSE and your 2015 LEAF. Charge rate is determined by the maximum rate of the EVSE, or that of the car's on-board charger, whichever is lower.
I noticed you're still working with polymers.

LeftieBiker
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Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 7:07 pm

To make it more clear: the charging station amperage determines the wire gauge and breaker required, not the car. The requirements of the car usually determine the 'size' of the charging station. A smaller amperage station will still charge an ePlus Leaf. The 'biggest' setup that you can make full use of to charge any Leaf is a 30 amp charging station with a 40 or 50 amp rated circuit. In either case you'd want a 40 amp breaker, although a 50 amp would likely be ok. If you want to keep the existing charging station you must keep the existing breaker as well.

One slip ahead of me.
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.

danrjones
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Re: What size Breaker at the Box should i use for a Plus Model Leaf?

Tue Jan 21, 2020 7:24 pm

I installed a NEMA 14-50 plug with a 50 amp breaker and 6 guage wire between the breaker and plug receptacle. Seems to work fine. I just use the provided nissan cable. I know I'm not using nearly 50 amps but the plug is there for something higher later if I wish. My leaf will never pull more than 6 6 kW if I remember correctly. Which is what, about 28 amps?
2018 Leaf SV Pearl White with Tech and All Weather, Purchased New on 5/3/19

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