Oilpan4
Posts: 1465
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: How many amps for new 240V install?

Sat Feb 01, 2020 4:53 pm

As far as I can tell my Panasonic made Nissan granny charger is an original 2011.

A normal 40 space panel if only loaded 15 amp breakers would put 300 amps worth of breakers on each line.
If you loaded up that same panel like what's found on a normal house with electric appliances, mostly 20 amp single pole branch circuits, some 30, 40 and 50 2-pole breakers and maybe a sub panel for a detached garage you could easily have well over 400 amps worth of breakers per line and that panel plus service wouldn't be considered "overloaded".
The "dont put more breaker capacity than what your service is rated for rule" went away probably in the 1980s.
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johnlocke
Posts: 608
Joined: Fri Jan 08, 2016 3:47 pm
Delivery Date: 14 Dec 2015
Leaf Number: 300582

Re: How many amps for new 240V install?

Sat Feb 01, 2020 5:48 pm

Oilpan4 wrote:
Sat Feb 01, 2020 4:53 pm
As far as I can tell my Panasonic made Nissan granny charger is an original 2011.

A normal 40 space panel if only loaded 15 amp breakers would put 300 amps worth of breakers on each line.
If you loaded up that same panel like what's found on a normal house with electric appliances, mostly 20 amp single pole branch circuits, some 30, 40 and 50 2-pole breakers and maybe a sub panel for a detached garage you could easily have well over 400 amps worth of breakers per line and that panel plus service wouldn't be considered "overloaded".
The "dont put more breaker capacity than what your service is rated for rule" went away probably in the 1980s.
The old rule of thumb was 180% of the panel's rating. That's gone away. I live on a farm with electric everything including the well pump. 2800 sq ft all a/c'ed and 100 degree plus summers and 30 degree winters. Even with all the outbuildings, the most power I've ever drawn in an hour was 16.5 KWH or about 70 amps. Most of the time, I'm under 4 KWH per hour. I have a 200 amp service but have never come anywhere close to that. Most people have no clue as to what their peak usage is and wildly over-estimate it. 100 amp service is likely all they ever need. If in doubt, ask your local utility about your max usage, it might even be on your utility bill.
2016 SV, New battery at 45K mi.
Jamul, CA
San Diego East County

smkettner
Posts: 7457
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: How many amps for new 240V install?

Sat Feb 01, 2020 7:19 pm

Just set your clamp-on ammeter to the main and turn everything on. Doubt you will hit 50% of the main breaker.
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RAV4 traded in for I-Pace Dec 2018

Flyct
Posts: 287
Joined: Tue Nov 03, 2015 12:04 am
Delivery Date: 05 Dec 2019
Leaf Number: 310009
Location: Bradenton, Florida, US

Re: How many amps for new 240V install?

Sat Feb 01, 2020 8:36 pm

roger1818 wrote:
Wed Jan 29, 2020 2:23 pm
Oilpan4 wrote:
Wed Jan 29, 2020 2:01 pm
The new 120/240v nissan leaf evse that will charge at full 6.6kw are going for about $250 on ebay. It's new, it says nissan on it, comes with 2018 and up leaf. Can't get much better than that.

I'm going to say the fancy line sharing protocol is a gimic if you're installing less than 3 or 4 level 2 chargers.
If you are confident that it is genuine, then great! It could be a cheap knock off though. You have to careful with cheap EVSEs sold on eBay and Amazon, as many aren't safety certified. Hardly a bargain if it burns your house down. :shock
I bought one from this seller https://www.ebay.com/usr/scionseven?_tr ... 7675.l2559 on eBay. It’s the real OEM deal for about $250 delivered. He sells many Nissan OEM parts.

The holster was extra.

I bought one as a spare to leave at our vacation cabin.

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Oilpan4
Posts: 1465
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: How many amps for new 240V install?

Sun Feb 02, 2020 7:38 am

johnlocke wrote:
Sat Feb 01, 2020 5:48 pm
Oilpan4 wrote:
Sat Feb 01, 2020 4:53 pm
As far as I can tell my Panasonic made Nissan granny charger is an original 2011.

A normal 40 space panel if only loaded 15 amp breakers would put 300 amps worth of breakers on each line.
If you loaded up that same panel like what's found on a normal house with electric appliances, mostly 20 amp single pole branch circuits, some 30, 40 and 50 2-pole breakers and maybe a sub panel for a detached garage you could easily have well over 400 amps worth of breakers per line and that panel plus service wouldn't be considered "overloaded".
The "dont put more breaker capacity than what your service is rated for rule" went away probably in the 1980s.
The old rule of thumb was 180% of the panel's rating. That's gone away. I live on a farm with electric everything including the well pump. 2800 sq ft all a/c'ed and 100 degree plus summers and 30 degree winters. Even with all the outbuildings, the most power I've ever drawn in an hour was 16.5 KWH or about 70 amps. Most of the time, I'm under 4 KWH per hour. I have a 200 amp service but have never come anywhere close to that. Most people have no clue as to what their peak usage is and wildly over-estimate it. 100 amp service is likely all they ever need. If in doubt, ask your local utility about your max usage, it might even be on your utility bill.
Yeah that 180% rule was probably before my time.

My peak usage is about 20kw when I crank up my welder to weld on some aluminum and that's if nothing else is going.
trumpvirus
Is going to get you.

johnlocke
Posts: 608
Joined: Fri Jan 08, 2016 3:47 pm
Delivery Date: 14 Dec 2015
Leaf Number: 300582

Re: How many amps for new 240V install?

Sun Feb 02, 2020 10:59 am

Oilpan4 wrote:
Sun Feb 02, 2020 7:38 am
johnlocke wrote:
Sat Feb 01, 2020 5:48 pm
Oilpan4 wrote:
Sat Feb 01, 2020 4:53 pm
As far as I can tell my Panasonic made Nissan granny charger is an original 2011.

A normal 40 space panel if only loaded 15 amp breakers would put 300 amps worth of breakers on each line.
If you loaded up that same panel like what's found on a normal house with electric appliances, mostly 20 amp single pole branch circuits, some 30, 40 and 50 2-pole breakers and maybe a sub panel for a detached garage you could easily have well over 400 amps worth of breakers per line and that panel plus service wouldn't be considered "overloaded".
The "dont put more breaker capacity than what your service is rated for rule" went away probably in the 1980s.
The old rule of thumb was 180% of the panel's rating. That's gone away. I live on a farm with electric everything including the well pump. 2800 sq ft all a/c'ed and 100 degree plus summers and 30 degree winters. Even with all the outbuildings, the most power I've ever drawn in an hour was 16.5 KWH or about 70 amps. Most of the time, I'm under 4 KWH per hour. I have a 200 amp service but have never come anywhere close to that. Most people have no clue as to what their peak usage is and wildly over-estimate it. 100 amp service is likely all they ever need. If in doubt, ask your local utility about your max usage, it might even be on your utility bill.
Yeah that 180% rule was probably before my time.

My peak usage is about 20kw when I crank up my welder to weld on some aluminum and that's if nothing else is going.
Most of us don't own an industrial grade welder. I use a oxy/acetylene welder myself.
2016 SV, New battery at 45K mi.
Jamul, CA
San Diego East County

Oilpan4
Posts: 1465
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: How many amps for new 240V install?

Sun Feb 02, 2020 5:03 pm

Oh its not an industrial grade machine, not even close. It's just a little 400lb machine the size of a refrigerator. Actually industrial machines weigh more than double that.
Mine is undersized to build or repair infrastructure, run on a welding production line, build ships, build tanks, build heavy equipment.
But it could repair most of those things, it has the power, just not the endurance to go all day.
trumpvirus
Is going to get you.

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