Explain this!! Electrical drain overnight! (16 Viewers)

[Pausim]

Here is a wild theory for those who really understand these things to pull apart.

EHU plugged in and runs out of credit - Multiplus switches to inverter mode - Inverter provides different AC using out of phase 115V down positive and negative wires - EHU still plugged into bollard where negative wire is earth bonded - Inverter sending 115V to earth - 12V battery powering drain to earth.

Answer, unplug the EHU as soon as credit runs out?

 

[funflair]

Can the Alde run off the inverter in this et up ?

 

[Lenny HB]

Alde definitely off

I know you & electrics are you sure

Go through all the timer settings.

 

[funflair]

Here is a wild theory for those who really understand these things to pull apart.

EHU plugged in and runs out of credit - Multiplus switches to inverter mode - Inverter provides different AC using out of phase 115V down positive and negative wires - EHU still plugged into bollard where negative wire is earth bonded - Inverter sending 115V to earth - 12V battery powering drain to earth.

Answer, unplug the EHU as soon as credit runs out.

I don't understand it but like the idea all the same

 

[WESTY66]

Can the Alde run off the inverter in this et up ?

Yes it can, and has in the past, but not for more than 24hrs I suppose

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[WESTY66]

I know you & electrics are you sure

Go through all the timer settings.

It off at the off switch! That said I’ve just turned it on and when it was last used it was whilst on hook up and was set at 2kwh but surely if it’s turned off and the screen is black, it’s off altogether

 

[Ditcha]

YesView attachment 948089

Show a screenshot with it unplugged

 

[Lenny HB]

Here is a wild theory for those who really understand these things to pull apart.

EHU plugged in and runs out of credit - Multiplus switches to inverter mode - Inverter provides different AC using out of phase 115V down positive and negative wires - EHU still plugged into bollard where negative wire is earth bonded - Inverter sending 115V to earth - 12V battery powering drain to earth.

Answer, unplug the EHU as soon as credit runs out?

I can't see that happening but he is in Germany like all European countries outside the UK they use double pole switching so both neg & live would be disconnected when the bollard turns off.

 

[Pausim]

I don't understand it but like the idea all the same

Somebody will doubtless tell me I don’t understand it either . However I think a lot of people overlook that many inverters achieve 230V by using 2 x 115V (over simplified explanation no doubt) instead of 1 x 230V.

 

[WESTY66]

Show a screenshot with it unplugged

I will when it’s finished charging

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[Ditcha]

Can you run the heating from the multiplus? I had my heating on a separate circuit to the multiplus so that mistake couldn't be made

 

[BrianJane]

How about.. Pay a euro and plug in to ehu. When the time is up check the settings and see if inverter has switched on. Check everything while still plugged in to see if theres a draw.

 

[Lenny HB]

It off at the off switch! That said I’ve just turned it on and when it was last used it was whilst on hook up and was set at 2kwh but surely if it’s turned off and the screen is black, it’s off altogether

I think it's a electronic switching on the Alde so you could have an intermittent fault.
This is assuming you can power the Alde from the inverter, I wired my van so heating can only be power by incoming mains not the inverter.

 

[WESTY66]

Can you run the heating from the multiplus? I had my heating on a separate circuit to the multiplus so that mistake couldn't be made

I’m assuming that when ehu is plugged in it works from the mains! Would it run through the Multiplus when on ehu?

 

[Dutch 68]

So I rolled up to an aire yesterday, 56% on the batteries (600ah lithium) I was next to the leccy bollard which had €1.99 credit on it so I plugged it in and began charging up to around 80%. The weather was atrocious so I put another €2.00 to bring it up to around 100% and that was around 8.00pm. We went out for dinner and the balance was €0.00 BUT left the plug in, came back and watched two hours worth of tv (12v) and went to bed, still with ehu lead plugged in! Woke up this morning NOTHING that’s 240v plugged in, only usual phone charging and 12v FF in garage, alde OFF, fridge on gas and my batteries was 26% so it’s used around 65-70% overnight!!
Can anyone explain this??? Lenny HB RogerIvy anyone??

, that is not ok, also why was you’re charge so low when you arrived at the Aire, shouldn’t your BtoB charger have charged your batteries to a much higher level whilst driving or did you only drive for a very short time?

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[Ditcha]

I’m assuming that when ehu is plugged in it works from the mains! Would it run through the Multiplus when on ehu?

Depends how it's wired our fridge and heating would only run from ehu, all sockets were feed from the multiplus but some people have all the 230v side through the multiplus.

 

[Lenny HB]

I’m assuming that when ehu is plugged in it works from the mains! Would it run through the Multiplus when on ehu?

All incoming mains goes via the Multiplus, the Multiplus will run in bypass mode until the max current from the bollard is reached (depending on your Multiplus settings) . When you exceed that current the inverter turns on and makes up the difference.

If you were on a 6 amp hookup running a 2kw load the inverter would need to supply approx 35 amps at 12v.

 

[Lenny HB]

, that is not ok, also why was you’re charge so low when you arrived at the Aire, shouldn’t your BtoB charger have charged your batteries to a much higher level whilst driving or did you only drive for a very short time?

Only a 50 amp B2B with 600ah of batteries.

 

[Ditcha]

If you wire all the 230v side through the multiplus you can control the threshold to when assist turns on better than when you have say the fridge and heating separately as the multiplus doesn't know how much power these are using so could still trip the ehu.

 

[WESTY66]

Can you run the heating from the multiplus? I had my heating on a separate circuit to the multiplus so that mistake couldn't be made

How about.. Pay a euro and plug in to ehu. When the time is up check the settings and see if inverter has switched on. Check everything while still plugged in to see if theres a draw.

I think it's a electronic switching on the Alde so you could have an intermittent fault.
This is assuming you can power the Alde from the inverter, I wired my van so heating can only be power by incoming mains not the inverter.

Right these three might have the answer.

Sooooo I’ve just run a check with my settings on the alde!
Things I don’t know.
1, Soc at bedtime
2, was I running alde on multiplus whilst the credit had run out before I turned it off?
Things I do know.
Nothing 240v plugged in at bedtime
Alde off altogether at bedtime
Fridge on gas.

So with the settings I had on alde and I’ve just replicated it whilst on ehu, the multiplus is doing its job perfectly in that it’s topping up the electric with what’s coming in from the bollard, so even with hook up there’s a deficit, so if the ehu had run out of credit the deficit and would have been far greater a draw through the multiplus hence depleting the batteries!
Oh and when I turned off the alde, it was OFF with no current being drawn
I think RogerIvy makes a good call doing a check on Soc and relevant things plugged in before going to bed
Well IF this has been the case it’s a lesson learned
All charging up now, up to 53%

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[WESTY66]

, that is not ok, also why was you’re charge so low when you arrived at the Aire, shouldn’t your BtoB charger have charged your batteries to a much higher level whilst driving or did you only drive for a very short time?

Haven’t hooked up since some free electric at Carthago last Thursday and have only been driving for an hour and half tops each day (not every day) solars not been too great so it’s where I expected it to be

 

[WESTY66]

All incoming mains goes via the Multiplus, the Multiplus will run in bypass mode until the max current from the bollard is reached (depending on your Multiplus settings) . When you exceed that current the inverter turns on and makes up the difference.

If you were on a 6 amp hookup running a 2kw load the inverter would need to supply approx 35 amps at 12v.

Nail on head

 

[Flairy]

Reading this I’m worn out

 

[Dutch 68]

Right these three might have the answer.

Sooooo I’ve just run a check with my settings on the alde!
Things I don’t know.
1, Soc at bedtime
2, was I running alde on multiplus whilst the credit had run out before I turned it off?
Things I do know.
Nothing 240v plugged in at bedtime
Alde off altogether at bedtime
Fridge on gas.

So with the settings I had on alde and I’ve just replicated it whilst on ehu, the multiplus is doing its job perfectly in that it’s topping up the electric with what’s coming in from the bollard, so even with hook up there’s a deficit, so if the ehu had run out of credit the deficit and would have been far greater a draw through the multiplus hence depleting the batteries!
Oh and when I turned off the alde, it was OFF with no current being drawn
I think RogerIvy makes a good call doing a check on Soc and relevant things plugged in before going to bed
Well IF this has been the case it’s a lesson learned
All charging up now, up to 53%

You need more batteries

 

[Al n Val]

All charging up now, up to 53%

53, that’s my no Ade

Thinking about what’s happened to you last night, it’s a Cathargo thing

It wouldn’t never happen to a Rapido


Hopefully

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[WESTY66]

You need more batteries

Funny you should say that

 

[WESTY66]

53, that’s my no Ade

Thinking about what’s happened to you last night, it’s a Cathargo thing

It wouldn’t never happen to a Rapido


Hopefully

Al, it’s not a Carthago thing, it’s an idiot operator thing

 

[Coastal Cruiser.]

it’s an idiot operator thing

 

[MichaelT]

The Alde is about the only thing in your van that would take that amount of current. Even the fridge running from the inverter wouldn't use that much.

Have you got the timer set on the Alde for hot water or heating & you have cocked up the settings?

At least you have the Multiplus and can get a decent charge back into the batteries quick. (my reason for fitting one MichaelT)

Yeah but you wouldn't be on EHU would you and if you were you wouldn't be so stupid to run your heating off batteries all night would you?

 

[Lenny HB]

Al, it’s not a Carthago thing, it’s an idiot operator thing

And we all know who that is.

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