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Charging from 100kva generator

No_Definition_4368 | 2026-02-18 16:28 | 33 views

Hi, so at work (construction site) our offices run off a 100kva generator. I park appox 25m away from these. Am i right in saying i can run a 230v 32amp blue plugged extention lead into a mobile charger and charge from that daily. No issues from the company, im site manager. See attached photos So generator - extension lead - mobile charger - car

Comments (17)
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Rfreaky 2026-02-18 19:54

Sure why not? Just make sure it's not a cheap chinesium cable where they cheap out on the copper. Look for something with at least 4mm² copper. You could also use a 400v 3~ charger to go up to 11kw on just 16A. Then you would need a 2.5mm² cable

Baklazanas2 2026-02-18 20:04

This

dallatorretdu 2026-02-18 20:42

it would be best for the generator to get a tri-phase charger to balance out the rotor, and see if it doesn’t struggle maybe you have to manually increase the amps one by one when starting the charge

Rfreaky 2026-02-18 20:56

I don't think a generator would care much about a 10% load.

thirdeyefish 2026-02-18 20:58

If there is a 3-phase convince output on that gennie, and your car supports 3-phase charging, that would be even better. You should try to keep your generators balanced and if you're running single phase, you should put some kind of load on unused legs. What are your other choices for output there?

mrtwrx 2026-02-18 22:58

Soft if you don't really. +1 on getting a real extension cable and a real charger and not chinesium junk though.

melvladimir 2026-02-19 09:45

It’s ok. But as others said: it’s better to use 3 phase (since you are in Europe your Model 3 should support it), then it will be distributed 16A load (or how much you set in the car/charger). There is a socket 400V on the photo. I have 16A 3 phase charger, can deliver up to 11kW

Nikz22 2026-02-19 09:55

Possible? Yes. Does it make sense out of an environmental perspective? Nope :D I would charge normally out of the grid. In Germany for example we have >50% ‘green’ energy production. Here you would have 0 if i understood correctly.

No_Definition_4368 2026-02-19 11:28

Correct but I'm not too bothered lol

No_Definition_4368 2026-02-19 11:29

So something like this right? https://preview.redd.it/ua2quzzpsfkg1.jpeg?width=1080&format=pjpg&auto=webp&s=686df21093260136fceaf86a8eb9407099933a84

melvladimir 2026-02-19 13:04

Correct. And 25m of 400V 3-phase (5x2.5 mm2) should be more flexible and less losses than 3x4 mm2. But better double-check if your Tesla have 3-phases (it should display sign 3 in circle during 11kW Type 2 charging), it should as I said above, but better be sure.

Nikz22 2026-02-19 14:14

I would buy one from juice (booster). Is a bit more rugged than this Plastic Lego Brick.

thijntjuhhh 2026-02-19 15:32

It still does make sense since the fuel will be more efficiently used by the Tesla.

theotherharper 2026-02-20 01:14

Or you could use the 3-phase 400 V port right next to it to get 11 kW or 22 kW (whatever your car is capable of)

Local-Associate-9135 2026-02-20 23:48

And 4 times more expensive...

Nikz22 2026-02-22 12:22

But not a plastic fire starter ;D

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