JohnnyD
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Mayenne (53) When Covid allows..........Which isn't very often these days........
Posts: 2,138
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Post by JohnnyD on Apr 20, 2024 17:55:13 GMT 1
Anyone with a linky can tell me what the actual cut off is on a 6kVA supply? Just got a 32A EV charger and when I get it wired in, do I run it at 24A, or can I get the full 32A I wonder?
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suein56
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Southern Morbihan 56 Brittany
Posts: 8,177
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Post by suein56 on Apr 20, 2024 18:45:50 GMT 1
'They' are supposed to allow an extra 10% but only for bursts of usage - not for a sustained usage - but how true that is I have no idea.
It is easy to reset a Linky tho.
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Post by lapourtaider on Apr 21, 2024 6:52:53 GMT 1
A 6kva supply will have a 30A breaker so at 32A you should be tripping the breaker. You should consider upgrading to at least 9kva if you want to run at 32A. Even at 24A you won't be even able to boil a kettle.
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Le-Dolly
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La Souterraine (23) depuis '05.
Posts: 613
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Post by Le-Dolly on Apr 21, 2024 10:02:13 GMT 1
A 6kva supply will have a 30A breaker so at 32A you should be tripping the breaker. You should consider upgrading to at least 9kva if you want to run at 32A. Even at 24A you won't be even able to boil a kettle. I concur. Another thought aimed at JohnnyD, are you proposing to fit your charging port yourself? IRVE certification is the normal minimum requirement. Your insurance company may have something to say about self installation. Another point about EV charging point installation, there is a tax credit available from the Impôts, from memory, up to 300€.
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JohnnyD
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Mayenne (53) When Covid allows..........Which isn't very often these days........
Posts: 2,138
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Post by JohnnyD on Apr 21, 2024 13:58:05 GMT 1
A 6kva supply will have a 30A breaker so at 32A you should be tripping the breaker. You should consider upgrading to at least 9kva if you want to run at 32A. Even at 24A you won't be even able to boil a kettle. I concur. Another thought aimed at JohnnyD, are you proposing to fit your charging port yourself? IRVE certification is the normal minimum requirement. Your insurance company may have something to say about self installation. Another point about EV charging point installation, there is a tax credit available from the Impôts, from memory, up to 300€.
What i was proposing to do was to fit a 32A Industrial socket on the outside wall of the house fed via a 3 core 6mm cable, the unit is not a fixed charger as such, but one of these Chinese type ‘portable’ chargers, it has a 32A industrial plug on the end of it, it is not a permanent fixture, but more a plug and play thing……..it would be on a dedicated 32A MCB in the CU, how does that sound? PS not being resident here, i presume any tax credits are not available for me? |
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Post by lapourtaider on Apr 21, 2024 14:35:40 GMT 1
I concur. Another thought aimed at JohnnyD, are you proposing to fit your charging port yourself? IRVE certification is the normal minimum requirement. Your insurance company may have something to say about self installation. Another point about EV charging point installation, there is a tax credit available from the Impôts, from memory, up to 300€.
What i was proposing to do was to fit a 32A Industrial socket on the outside wall of the house fed via a 3 core 6mm cable, the unit is not a fixed charger as such, but one of these Chinese type ‘portable’ chargers, it has a 32A industrial plug on the end of it, it is not a permanent fixture, but more a plug and play thing……..it would be on a dedicated 32A MCB in the CU, how does that sound? PS not being resident here, i presume any tax credits are not available for me? Power (Watts) = Volts (V) x Amp (A). Hence 6000 W can also be expressed as 6kW or 6KVA. Mains voltage is nominally taken as 240V. However most households vary so you would need to measure yours to get an exact figure. 6000W at 240V gives a current of 25A. So your 30A breaker allows for a drop in the nominal 240V. So you can see that 32A is not possible unless the voltage gets down to about 190V. But of course your incoming breaker will still trip at 30A. If you want to run it ar 32A you will have to upgrade to 9kW. |
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JohnnyD
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Mayenne (53) When Covid allows..........Which isn't very often these days........
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Post by JohnnyD on Apr 21, 2024 16:21:10 GMT 1
Yeh, I had a feeling that would be the case, just thought I would throw it out here to the experts, at least I can run it at 24A OK, which is better than the 16A I have currently, I hate running things near the limit anyway, 24A gives me a bit of leeway, it would only be on at that rate knowing we don't use a kettle or similar device, overnight usually.
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Post by lurcher on Apr 21, 2024 17:17:23 GMT 1
My experience with Linky is that the over power detection is quite fine and it would be best to assume you have no more than 24A available in total if you have chosen 6kVA. The 10% leniency described by Sue earlier really is for short bursts only as she pointed out. All this from me is based solely on a sample of one.
JD, is your supply single phase and what other equipment will be running at the same time?
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Post by robertarthur on Apr 21, 2024 23:57:36 GMT 1
@ JohnnyD, the smartmeter Linky takes care of short- and overcurrent. The two functions left fot the main main breaker are: 1/ emergency switch (coupure d'urgence) and 2/ differential switch off, leakage current more than 500 mA. The recent LINKY meters are a little bit more tolerant than in the past, not too trigger happy in the case on inrush currents and short overloads. Short read.Long read, the history of Linky. Charging EVs by Promotelec. Charging EVs by Legrand. |
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JohnnyD
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Mayenne (53) When Covid allows..........Which isn't very often these days........
Posts: 2,138
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Post by JohnnyD on Apr 22, 2024 8:13:09 GMT 1
My experience with Linky is that the over power detection is quite fine and it would be best to assume you have no more than 24A available in total if you have chosen 6kVA. The 10% leniency described by Sue earlier really is for short bursts only as she pointed out. All this from me is based solely on a sample of one. JD, is your supply single phase and what other equipment will be running at the same time? Yeh it's single phase, base load in the house is around 350 watts, so the charger at 24A overnight might be OK, the main breaker (EDF/Energis) says its rated at 45A/500mA so the cut off would be the linky I think |
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Post by robertarthur on Apr 22, 2024 11:40:35 GMT 1
JohnnyD, one of the many French websites trying to answer your question: Quel abonnement d'électricité pour une borne de recharge? Wallbox de 3,7 kW Abonnement de 6 kVA minimum ( about 16 A charging current available, single-phase) Wallbox de 7,4 kW Abonnement de 9 kVA minimum ( about 32 A charging current available, single-phase) Wallbox de 11 kW Abonnement de 12 kVA triphasé minimum Wallbox de 22 kW Abonnement de 24 kVA triphasé minimum To recap the earlier French links: four charging modes. |
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JohnnyD
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Mayenne (53) When Covid allows..........Which isn't very often these days........
Posts: 2,138
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Post by JohnnyD on Apr 22, 2024 16:53:26 GMT 1
JohnnyD, one of the many French websites trying to answer your question: Quel abonnement d'électricité pour une borne de recharge? Wallbox de 3,7 kW Abonnement de 6 kVA minimum ( about 16 A charging current available, single-phase) Wallbox de 7,4 kW Abonnement de 9 kVA minimum ( about 32 A charging current available, single-phase) Wallbox de 11 kW Abonnement de 12 kVA triphasé minimum Wallbox de 22 kW Abonnement de 24 kVA triphasé minimum To recap the earlier French links: four charging modes. Its a bit of a can of worms Robert, as the fixed wall boxes are mostly not adjustable, and run at either 3.7 or 7.4 kW, the ‘portable’ ones can be set to run at normally 4 values, 13, 16, 24, 32, so the one i have can be set to operate at 24A which most of the wall boxes cannot……..I will see what 24A gives me on the linky, and if i need to go to 9kVA then so it will be, at least then i can run it at 32A. I assume the external wiring that belongs to EDF/Enedis is OK at 9kVA? I know the internal stuff of mine is, but have no idea what’s behind the secret wooden panel I cant get into. |
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Post by robertarthur on Apr 22, 2024 17:33:03 GMT 1
JohnnyD, not much headroom left when charging with 24 amps. Time and Linky will tell....You do need a circuit specialisé with a 32 A disjoncteur, interrupteur différentiel of 30 mA (type A), 6 mm² wiring and a prise renforcée to carry the heavy load. Much cheaper than all these clever wallboxes. With a Linky it's easy to change your puissance souscrite, no manual intervention of an ENEDIS technician needed. ENEDIS should know if their wiring can support the extra load. See this information and phone numbers. |
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Le-Dolly
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La Souterraine (23) depuis '05.
Posts: 613
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Post by Le-Dolly on Apr 23, 2024 10:44:26 GMT 1
My experience with Linky is that the over power detection is quite fine and it would be best to assume you have no more than 24A available in total if you have chosen 6kVA. The 10% leniency described by Sue earlier really is for short bursts only as she pointed out. All this from me is based solely on a sample of one. JD, is your supply single phase and what other equipment will be running at the same time? Yeh it's single phase, base load in the house is around 350 watts, so the charger at 24A overnight might be OK, the main breaker (EDF/Energis) says its rated at 45A/500mA so the cut off would be the linky I think Under normal conditions when a Linky is fitted, the main switch will be set at it's highest level so as to enable 'auto' adjustment of the level of ones incoming supply. If, as you say, yours is 45A that would suggest that is the maximum level that is achievable without a physical intervention from Enerdis, it may be set as such because your property has, what is now, an undersized feeder cable to the PDL. Or, it could be that the main switch was never set to todays maximum potential as it is an older model. Sorry for the delay in answering, currently in Morocco and the interweb is a bit iffy here in the desert.
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JohnnyD
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Mayenne (53) When Covid allows..........Which isn't very often these days........
Posts: 2,138
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Post by JohnnyD on Apr 24, 2024 16:36:17 GMT 1
Yeh it's single phase, base load in the house is around 350 watts, so the charger at 24A overnight might be OK, the main breaker (EDF/Energis) says its rated at 45A/500mA so the cut off would be the linky I think Under normal conditions when a Linky is fitted, the main switch will be set at it's highest level so as to enable 'auto' adjustment of the level of ones incoming supply. If, as you say, yours is 45A that would suggest that is the maximum level that is achievable without a physical intervention from Enerdis, it may be set as such because your property has, what is now, an undersized feeder cable to the PDL. Or, it could be that the main switch was never set to todays maximum potential as it is an older model. Sorry for the delay in answering, currently in Morocco and the interweb is a bit iffy here in the desert.
So if my main edf/enedis breaker is rated at 45A will an upgrade to 9kVA be OK, that sounds too close for comfort to me? |
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