11kW AC Charging

[ruggedscotty]

blank said:

ruggedscotty said:

delta0 said:

JonnyVTEC said:

Is he a trucker?!

I would have guessed a taxi driver.

yup a taxi firm, looking at quick charge turn arounds as the taxi is not earning when sat, and he is looking to stay away from the charging network as reckons thats going to get expensive very quickly. the taxi fleet maintenance and fueling costs over five years is well over what this charging system is costing, and of course he can do more than one vehicle at a time. not went into the ins and outs of it as was down doing the generator and looking at the earthing arrangements as the generator output is kept seperate from the mains.so its being treated as a private supply, however as they have used the utility supply for the control side of things then there is a mix and that needed looking at.

It does look to be a good set up.

Is he allowed to use red diesel after April?

looking at alternative fuels - fuel cleaning and treatment opens up possibilities to use diesel or even used cooking oil... He can get paid to remove oil, and using treatment on that he can get it to a state it can be used in common rail engines no bother... think hes looking at the bigger picture here and trying to stay ahead. kudos to him indeed.

[caseys]

Also if this is public charging don’t forget some cars don’t include a three charging lead and try and get away with a single phase 16/32A cable.

When I got my i3 years ago they had a promo that gave you a free type 2 cable - as it normally only came with a granny 3-pin. Even though it could charge at 16A 3-phase 11kw they gave you a 16A 1-phase 3.6kw cable. But of course bmw can sell you a 16A 3-phase 11kw cable.

[Toaster Pilot]

caseys said:

Also if this is public charging don’t forget some cars don’t include a three charging lead and try and get away with a single phase 16/32A cable.

When I got my i3 years ago they had a promo that gave you a free type 2 cable - as it normally only came with a granny 3-pin. Even though it could charge at 16A 3-phase 11kw they gave you a 16A 1-phase 3.6kw cable. But of course bmw can sell you a 16A 3-phase 11kw cable.

Suspect that was a dealer offer and they were unloading old stock - the earliest i3 could only charge on single phase. The compatible cable for those older cars is a 32A single phase cable though, sounds like you were palmed off with one from a PHEV

The newest model comes with a 3 phase cable as standard.

[caseys]

Toaster Pilot said:

caseys said:

Also if this is public charging don’t forget some cars don’t include a three charging lead and try and get away with a single phase 16/32A cable.

When I got my i3 years ago they had a promo that gave you a free type 2 cable - as it normally only came with a granny 3-pin. Even though it could charge at 16A 3-phase 11kw they gave you a 16A 1-phase 3.6kw cable. But of course bmw can sell you a 16A 3-phase 11kw cable.

Suspect that was a dealer offer and they were unloading old stock - the earliest i3 could only charge on single phase. The compatible cable for those older cars is a 32A single phase cable though, sounds like you were palmed off with one from a PHEV

The newest model comes with a 3 phase cable as standard.

It was early 2019 - it was a bmw wide promo. Didn’t bother me too much as the lease company cocked up
My order and as a gesture of good will refunded me for buying the 3-phase cable

[blank]

So an eGolf does actually have a 7kW 2 phase charger.

On 3 phase connections (11kW and 22kW) it takes 16A from phases 1 and 2.

On a single phase it takes 32A.

Seems this is quite common with VW and Merc, presumably because 3 phase low current is quite common in Europe. I'm assuming they fit 1, 2, or 3 chargers to give 3.6/7/11kW.

Japanese/Korean cars with 7kW chargers seem to be 32A single phase, so will be limited to 3.6kW / 16A on 11kW EVSEs.

The way to tell seems to be to look at the Type 2 port and see if the L2 and L3 pins are there.

[ruggedscotty]

blank said:

ruggedscotty said:

delta0 said:

JonnyVTEC said:

Is he a trucker?!

I would have guessed a taxi driver.

yup a taxi firm, looking at quick charge turn arounds as the taxi is not earning when sat, and he is looking to stay away from the charging network as reckons thats going to get expensive very quickly. the taxi fleet maintenance and fueling costs over five years is well over what this charging system is costing, and of course he can do more than one vehicle at a time. not went into the ins and outs of it as was down doing the generator and looking at the earthing arrangements as the generator output is kept seperate from the mains.so its being treated as a private supply, however as they have used the utility supply for the control side of things then there is a mix and that needed looking at.

It does look to be a good set up.

Is he allowed to use red diesel after April?

he can source cheap diesel... and think of all the used cooking oil he can get his hands on....

[annodomini2]

Tesla Model 3 can pull 11kw single phase, but legal restrictions on current limit, mean you're limited to 7.2 by the wallbox.

In the US with the right hook up it will draw 48A.

Not my image taken from a forum.

[EVLATECOMER]

So 48A is 3 phases at 16A, how are they getting 244V in the US though?

I thought they were at 120V?

[ruggedscotty]

EVLATECOMER said:

So 48A is 3 phases at 16A, how are they getting 244V in the US though?

I thought they were at 120V?

the US have 120/240v mains though. centre tapped and grounded one phase.

the main board in the house splits this to even it up.

220v is used to run the AC and heating also the range can be 220v too. but your right the sockets and lights are all 110v

wee bit of info on the american power

https://www.thebuildinginspector.net/blog/electric...

Edited by ruggedscotty on Sunday 23 January 22:38

[tr7v8]

EVLATECOMER said:

So 48A is 3 phases at 16A, how are they getting 244V in the US though?

I thought they were at 120V?

Phase to neutral in the USA is 110V, Phase to phase is nominal 208VAC. Even domestic properties in the USA have a 208VAC feed. And its used for heating (funaces), A/C normally a combined unit & also big cookers & washing machines. Full 3 phase on domestic properties is rare from what I've seen.

[ruggedscotty]

tr7v8 said:

Phase to neutral in the USA is 110V, Phase to phase is nominal 208VAC. Even domestic properties in the USA have a 208VAC feed. And its used for heating (funaces), A/C normally a combined unit & also big cookers & washing machines. Full 3 phase on domestic properties is rare from what I've seen.

wrong....

its not 208v... on three phase it may indeed be as you say 208v between the phases. thats a three phase with 120 degree rotation round the phases.. each phase 110v to neutral and 208v across phases...

in a domestic its actually one phase that you have but the phase is centre tapped. so you have 220 v on the phase and 110v between each end of the phase and the centre tap. they then earth that centre tap and call it the neutral....

One of the supplies that they do use stateside thats different to here is a three phase with a high leg connection. thats a delta connection which is different to our connections. The transformer windings are connected in delta with a centre tapped winding. 110-0-110 on that winding and then 220 v three phase from the three phases... and that high leg gives you 208v to ground....

can be a bit complicated to get your head round. same but different lol




220v three phase delta with centre tapped winding....

usually domestic properties are not three phase but work on one winding single phase 7.2 kv distribution. the transformer having a secondary thats centre tapped and that centre tap grounded giving you 110 - 0 - 110 to the property

[tr7v8]

ruggedscotty said:

wrong....

its not 208v... on three phase it may indeed be as you say 208v between the phases. thats a three phase with 120 degree rotation round the phases.. each phase 110v to neutral and 208v across phases...

Ah OK, I don't do USA electrics most of the time & when I do it's in industrial 3 phase environments. No domestic stuff.