Grounding Image


Multiplus II – Ground relay test failed #8 - Error 11 0x24

Hello everyone,

This device worked perfectly over the past two weeks and today it started dropping the AC loads.

This notification is displayed – “MultiPlus-II 48/5000/70-50 - #8 Ground relay test failed”

The VE.Bus Error report shows – “Last VE.Bus Error 11 report 0x24/Error occurred/GND Relay Error”

When I restart the Multi it produces the error right away. The bulk and absorption LEDs are also on.

Current firmware version is v471 (Multiplus II software version: 2623471)

I have done the following:

-Verified that AC-in GND is properly connected to grid earth.

-Tested for voltage between AC-in GND and AC-in Neutral. Ok - no voltage measured

-Verified that earth and neutral is not connected somewhere. All ok.

-Physically disconnected all cables from AC- out1 and AC-out2 to verify that there is no problems with any of the loads.

-Switched loads directly to grid via change over switches - all loads functions properly.

-Tested RCDs all ok.

Thank you,


jeanmc asked
bernard-forrer answered ·

4 Answers

Ground relay is it necessary on auto-transformer

So i just installed a Victron Auto Transformer 32 amp version. I currently have a Multiplus 12/3000/120, I am feeding it to the autotransformer. This install is in my vehicle, the multiplus is grounded to the chassis, should I ground the autotransformer to the same chassis ground as the multiplus.

Or is it necessary to uncheck the ground relay setting in the multiplus. The picture i posted depicts the ground relay connection from the multiplus going to the earth relay on the autotransformer. Is this necessary.??

If it is necessary, where can I get 10mm long ferrules to connect to the 2 pin connectors.?? My standard 8mm ferrules are not long enough.


saullyman asked

0 Answers

Conjoncteur de Neutre

Bonjour, je souhaiterais savoir si l'un d'entre vous a déjà utilisé un conjoncteur de NEUTRE pour connecter la terre au système ?

En fait j'ai fabriquer une box énergie mobile qui est équipé d'un Multiplus 5kva et de batterie pylontech. Le but est d'avoir la terre et cela même si je n'ai aucune solution comme l'absence de bornier de terre ou l'impossibilité de planter un piquet de terre. Merci pour vos réponses

mobilvolts asked
Thierry Cortassa (Victron Energy Staff) answered ·

1 Answer

dual installation 12V and 24V negative busbar

Hi all

If I have two lines, 12V and 24V, can I connect both to the same negative busbar?
if the answer is yes, can that be grounded, must be grounded or some other answer?

many thanks in advance

pepvan asked
dazey77 answered ·

1 Answer

My client can't make the neutral-ground connection on a 12V 1200VA Phoenix

On the 12V 1200VA inverter, there isn't the surrounded red bloc below :


Here photo of the client :



As response, Victron France said: "You have to make the connection as the manual says."

@jfeiman, ask the same question for 12V 500VA NEMA inverter 2 months ago, no answer too.
His message :

"My 12/500 Phoenix inverter also lacks the internal neutral-ground jumper. According to the manual, a GFCI outlet will not provide ground fault protection without a neutral-earth bond. When a single extension cord or other electrical device is plugged directly into the inverter, there is no load distribution center on the AC side for external neutral-earth bonding.

1) Am I correct in interpreting this to mean that an extension cord equipped with a GFCI device does not provide ground fault protection when plugged into this inverter?

2) Is there a plug-in solution for providing ground fault protection?

3) Is there a VE service document that details a procedure for bonding neutral to earth internally with this inverter?"

myshopsolaire asked
myshopsolaire commented ·

1 Answer

Ground Issues with Victron MultiPlus 24V DC - 3000W

Hi everyone, We have experienced issues with Victron inverters. Since the marina installed ground-fault relays (breakers) on the docks I have 4 customers that are tripping the GFI breakers on the dock and the marina office is requiring them to get it fixed. The Problem with all of them is the Victron inverter. I just installed a new one but as soon as I ground the chassi and inverter turns on it trips the dock GFI. Same problem on other boats. If the Grounds are removed from the inverter problem is solved and GFI does not trip. Just For reference The marina just got the GFI system installed and it is set to 0.2 Amps. Is there a way to fix that problem and what should I tell the owner who just paid for the new Victron inverter that got installed but it can`t be grounded. The only way to work is if there is no ground to the inverter neither for input or output or chassis.

nixyacht asked
Kevin Windrem answered ·

2 Answers

Changing the connection ground-minus


I am planning to install a MultiPlus 3 KW / 24 V AC inverter/charger in my expedition motor home (RV).

The inverter/charger is unfortunately 3.6 m away from the batteries and from the Central Negaive Busbar. Routing the 50 mm2 wires is a bit difficult due to the confined space.

The original Victron wiring diagram shows independent cables for the chassis ground and for the battery negative connection, but both lead to the same central negative busbar.

What is wrong with bringing together (connecting) the cables for ground-case and for battery-minus directly after Multiplus and thus saving a long cable to the central negative busbar, which would simplify the cable routing considerably in my case?


hilmar asked

0 Answers

MPPT 150/70: Ground Fault Protection Device Type and Install Location

Newbee to community: The MPPT 150/70 installation manual states that I need a GFPD but I am not sure what I need and where it is installed. I'm familiar with 120Vac circuit interrupts but not 12Vdc equipment interrupts. My system consists of three 330 watt solar panels on the trailer roof wired in series and three 100ah AGM VRLA RV deep cycle batteries wired in parallel to a 2000 watt inverter. Any suggestions as to an appropriate device and source would be appreciated. I'm self installing as there is no local solar installer that deals with trailer/12Vdc installations and my distributor is in another state. Thank You in advance for any advice you share.

kjlars asked

0 Answers

Blue Smart IP67 AC ground

Is the AC ground connected to the DC negative on the BlueSmart IP67 25A charger?

hernan asked

0 Answers

RCD Tripping randomly

I have just about installed Multiplus 48/1200/13 and hooked it up to Li-ion 14s1p batteries.

It has been working perfectly in UPS mode and pass through. To test the capacity, I turned off the mains and the UPS kicked in, I let the system run - till the cut off voltage was reached.

When I turned on the grid/mains - the RCD (on the mains consumer unit) tripped. It did this a few times. I disconnected the load and the same happened (rocker switch in ON position). Then I switched it to charger and it did not trip.

I tried various combinations and unfortunately - the RCD tripping is very random and not reproducible.

AC in comes from the grid

AC out goes to feed a total of 250W (a few pumps)

Any input or help would be appreciated.

ispookie666 asked
tedr answered ·

6 Answers

Can a bus bar be used with a chassis ground

I am building a new electrical system using all Victron equipment. The multiple equipment calls for chassis grounding. Can I use a buss bar and a single cable back to the chassis to accomplish this.

dfraizer asked
klim8skeptic edited ·

1 Answer

Need help with CLS500 placement, grounding issue, Battleborn batteries tech team?


I have an issue with the advice I was given for the placement of the CSL500 ( Current Surge Limiter ). Instructions - These were 1 page printed shipped with it.

From bottom of page:
'Note: Either the negative battery terminal OR the negative DC input to the inverter/charger should be connected to an earth or chassis ground. NOT BOTH! Connecting both to ground will bypass the device.'

* Interesting, the instructions shipped do not match the BB sites

- The INV- Terminal is connected to the Inverter/Charger Negative Terminal.
- The Bat- Terminal is connected to the Battery Bank Negative Terminal.
- The INV+ Terminal is connected to the positive Terminal of the Inverter/Charger.
- The Battery Bank Positive Terminal is connected to the Inverter/Charger Positive Terminal.
- The Battery Bank Negative Terminal is connected to ground.
- The Inverter/Charger Negative Terminal is NOT CONNECTED to Ground.

'Negative DC terminal' - they do not specifically say 'chassis or earth ground'....

Two wire diagrams, Current and future, the Gold rectangle is the CSL500.

I was told to put it between the SHUNT and he Inverter -.

This is an issue for the Charge controller - to - Battery bank circuit, if I am not mistaken, since input current negative will have to pass through the ground on the common negative bus bar and up into the ground of the inverter, to complete circut with the battery bank?

Would the correct way to deploy this be to connect both the Inverter - and Chassis Earth ground to the negative side of the CSL500 and the battery - ( from the common - bus bar? )

Thank you for your time in advance.

( also, is the Multiplus 24/3000/70 or Quattro 48/5000/100 - 70 120v have its internal neutral bonded to chassis ?)



pmano asked
owenfi edited ·

1 Answer

Why connect the Negative DC battery terminal or busbar to Ground?


What is the reason why negative busbar and grounding busbar are common? How can we protect the system against impacts from the soil in this case?


cagataysahinoglu asked
ruben answered ·

1 Answer

Isolated DC Negative from Hull/Ground for Aluminum Hull - Quattro

I have an aluminum hull boat and due to being an aluminum hull the DC system is completely isolated from the hull (engine negative is only connected to hull during cranking) A leak meter is installed which will indicate if there is a connection between hull on either the positive or negative of the DC system (indicating risk of corrosion). This question is regarding the plan to install a Quattro (or Multiplus) Inverter/Charger. Is the DC negative isolated on the Quattro from the AC ground and Chassis such that I can maintain my DC battery negative isolation from my hull? Thank you for any input.

altair asked
Paul B answered ·

1 Answer

Victron Multiplus Ground Issue?

I have a Victron Multiplus 12v 3000w Inverter / Charger. I wired the AC output into the 120v AC Circuit Panel in my RV and it's not producing an output that makes any sense.

Using a multimeter, I have measured that there is 120v and just under 1 amp that makes it to the circuit panel where I have installed a new 50amp single pole breaker. I have validated the voltage on the bus bar in the circuit panel as well (I forgot to check for amperage).

The Multiplus via VictronConnet shows 120v output on AC1 but Power is 0w, Current is 0.00A (sometimes it shows -0.02A) and 60.0Hz frequency.

I'm stumped because nothing in the circuit panel seems to be getting energized.

Could this be a bad ground? A bad neutral? I'm having some difficulties making good connections with the heavy gauge 6/3 wire into the panel but it should be good enough to make something light up.


The AC output L1 is a 6/3 AWG stranded wire with a run length of about 8 feet with no junctions between the multiplus and the circuit panel.

The Multiplus shows a "Inverting" state in VictronConnect

The battery shows 13.46v at 0.0A Current at 56 degrees F.

AC Input is 0v, 0.00a, etc.



jasonjs asked
jasonjs answered ·

3 Answers

How can I clear the Multiplus II VE Bus Error 8 / 11 report?

I'am Installing a Multiplus II 48 5000 with solar MPPT Charger.

And now I'm wondering about the new Error 8 / 11 Report page, because there ist an Error listet an I don't know how to delete this error.

The system is running fine and I want to get rid of this error. What also confuses me is that the error main page shows no VE Bus errors at all. And this is where I need more information: Does last VE Bus error report mean the last error 8 or 11 is stored in this list and just stays there for ever?

to exclude any futher wiring mistakes I disconected all AC-Out wires inside the Multiplus.

Only AC-In is connectet and I checked the wires serval times.

As in many european Countries the N and PE on the AC-In are at Ground Potential, but this should not be a problem. I have a standart european TN-C-S Power Grid.

With this question I just want to make sure I'm not chasing any errors witch I solved long time ago.

Hope you can help me

Regards Felix



felix-vt asked
felix-vt commented ·

1 Answer

Chassis ground with no real chassis in Truck camper

Obviously the whole chassis ground thing has a purpose. But truck campers have no real chassis. So my plan is to run a 6ga green wire from the rear where the Vic 120/3000 inverter and 4 lithium batts and solar controller reside. That 6ga starts at a bus bar where I have the Vic 250/80 controller and the Vic Inveter/charger only. Then the 6ga runs 20’ forward is a chassis bar that is inches away from the bat NEG bar and neutral 120vAC bar.

Is that sufficien?

tmartin000 asked
tmartin000 edited ·

4 Answers

Grounding chassis vs AC-IN and AC-OUT

I'm finishing up a fixed install of two Multiplus 24/3000 in a split phase setup and wanted to make sure I understood how grounding is handled.

In Wiring Unlimited for a fixed install looks like the Multiplus chassis ground connects to a bus bar (in my case Lynx distributor) along with the battery negative terminal which is bonded to the ground rod for our house. Using a multimeter it looks like all ground points are connected. Is there a difference between grounding through the chassis ground point vs AC-IN and AC-OUT and if not is OK to use only the chassis ground?


Eli Hunter asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

"Ground Relay" setting, on or off?

Hello, I have a Multiplus 2000/12/80. The Ground Relay setting is on by default. Based on my reading it looks like I should turn it off. I don't have a ground relay wire hooked up and I didn't buy an autotransformer. All I have hooked up to my multiplus is the battery, chassis ground, shore power, AC, and battery temperature cable. Am I missing anything or should this be turned off? Would having it turned on have caused any issues?

Thanks for the help!

kaplan78 asked
marekp answered ·

6 Answers

MultiPlus Compact 24/2000 > AutoTransformer - Where is Ground Relay connector?

I am trying to identify where inside my MultiPlus Compact 24/2000, does the Ground Relay control wire of the Victron AutoTransformer connect, shown on page 13 of the AutoTransformer manual here:


The Manual of the MultiPlus 3000 clearly shows one of the terminals dedicated to this feature here, note GND-Relay plus + and - :


The manual of the MultiPlus Compact 2000 however, shows no such terminal, and indeed when you open it up, none can be found:


Can anyone, particularly staff members perhaps, confirm if there is any possibility of connecting the MultiPlus Compact 2000 in this manor? Can a connection be soldered on to the board where the internal ground relay connection is, or is the intended functionality of this relay unique, and something the Compact 2000 lacks entirely?

ee21 asked
solardude answered ·

4 Answers

chassis grounding clarification


Yesterday, I received a SmartSolar 100/50 charge controller ordered thru Amazon. It's to be installed in my RV. Going over the manual (version 02, Sept. 21st 2017), section 3.2 states 'The charger must not be connected with grounded PV arrays (one ground connection only)'. Does this mean I should not be grounding my solar panel frames to the RV chassis? My plan was to ground the solar panel frames to the RV frame in one location and ground the charge controller housing to the RV frame at another location. According to the statement in the manual, this should not be done. Please clarify the statement for me so I have a better understanding. Thank you for your time.

Kind regards,

Michael Bonnar

mbonnar asked
rjoustra edited ·

1 Answer

Multiplus Tripping Ground Fault

I've been testing my Multiplus 3000-120-12v in my Grand Design Imagine travel trailer. So far, I have only tested Output 1, since I am not connected to shore power. I have the chassis ground connection of the Multiplus grounded to the trailer chassis. The incoming shore power ground is connected to the Input Ground on the Multiplus, but I understand it is not used unless power is detected. The Multiplus Output ground goes to both load centers: (1) main and (2) shore power only. I was advised by the Grand Design technical support that the existing bare wire going to the main load center's ground bus is connected to chassis ground, so I disconnected that wire in favor of the ground coming from the Multiplus. I have tested Output 1 and I am able to run the microwave, TV, etc. from the batteries. Unfortunately, the GFCI receptacle is tripped and can't be reset. Any ideas to get the GFCI problem fixed?

Stephen Johnson asked

0 Answers

grounding of victron mppt and battery minus with pv minus

Hello, i bought about 5kW thin film pv modules. On the manual i read, that the minus pole of the modules must be grounded to avoid degration. The pv modules will be connected to a battery with an Victron mppt charger. On the battery are 3x Multiplus2.

Is it a problem to ground the battery minus and thus bypassing the ground through the mppt to the pv modules minus? Is the multiplus system 100% glavanically disconnected to the battery. Are there any risks when grounding the battery minus, maybe concerning the connected devices like venus gx?

How could I ground the pv modules minus?

thank you a lot for your help!!

gnagflow asked
gnagflow commented ·

1 Answer

Grounding Multis, Charge Controllers and Solar panel frames

My question is concerning grounding in my rv. My intent is to ground the solar panel frames, 4 charge controllers chassis and the two multis chassis to a single point on the Motorhome chassis. The new lithium batteries are placed next to the inverters and all goes through appropriate fusing and disconnects for the size system. The cables for the old inverter (3/0) are in the compartment where I have installed all the new equipment and my intent is to use those cables to run back where the old batteries were and install buss bars to handle all the connections (chassis ground , house distribution and alternator charging) that went to the old lead acid batteries. All the aforementioned equipment have new pos and neg buss bars where everything is landed and the neg would be chassis grounded about 10 feet away on those old inverter cables on the same chassis rail but due to the location it would be a feet to ground it all in that location. Is this acceptable or could I have a potential for a ground loop somewhere even though all the equipment will only have one chassis ground but some in one place and some in the other. Also is it safe to daisy chain my chassis ground for the two multis with a cable that would handle 1 not 2 going into a ground faulted condition or would it be a better practice to run each one to the grounding point separately and I suppose the same question applies to the charge controllers as my intent was to daisy chain them as well using a cable sufficient to handle one faulted at a time.

rjoustra asked
Kevin Windrem commented ·

1 Answer

PV System Grounding and GFPD Application

My travel trailer PV system components: Multiplus 3000/24/70, 4 S6-275 AGM Rolls batteries. I am planning the install of a SmartSolar MPPT 100/50 and 2 JKM365M-72-V wired in series.

PV specifications


The SmartSolar 100/50 manual states:

3.2 Grounding

● Battery grounding: the charger can be installed in a positive or negative grounded system. Note: apply a single ground connection (preferably close to the battery) to prevent malfunctioning of the system.

● Chassis grounding: A separate earth path for the chassis ground is permitted because it is isolated from the positive and negative terminal.

As my Multiplus is grounded to the chassis, I would ground the MPPT case to the chassis as well, yes?

● The USA National Electrical Code (NEC) requires the use of an external ground fault protection device (GFPD). These MPPT chargers do not have internal ground fault protection. The system electrical negative should be bonded through a GFPD to earth ground at one (and only one) location.

As this is a mobile application, is a GFPD required?

If so, this appears to be the proper device.


● The charger must not be connected with grounded PV arrays (one ground connection only) You would still bond the PV framing to the chassis, yes?

3.3 PV configuration (also see the MPPT Excel sheet on our website)

● Provide a means to disconnect all current-carrying conductors of a photovoltaic power source from all other conductors in a building or other structure. I take this as a 150VDC / 20A breaker on the positive leg between the PV array and the MPPT and a disconnect on the negative leg between the PV array and the MPPT?

Apparently to Code, the GFPD must not be used as a disconnect. Should the GFPD be wired before or after the PV array Pos. breaker and Neg. disconnect?

● A switch, circuit breaker, or other device, either ac or dc, shall not be installed in a grounded conductor if operation of that switch, circuit breaker, or other device leaves the grounded conductor in an ungrounded state while the system remains energized. Is this in reference to an "uninterruptible" ground to chassis?

In all my research to date, this is the first time I heard of the requirement of a GFPD. Never heard of it on YouTube PV installs.

Any input would be greatly appreciated.

glenn-matthiesen asked
rjoustra commented ·

3 Answers

Multiplus 12/3000/120-50 Ideal Grounding on Travel Trailer

I've spent quite a bit of time researching this question, in the Wiring Unlimited document, along with the Multiplus manual and a multitude of forum postings. I realize some elements of the question are largely redundant so I will try and be as specific as possible. This installation is for a personal RV, and although I'm not a licensed electrician I have done quite a bit of high voltage electrical work, and as a computer scientist have had some exposure to electrical engineering principles and issues when working with microcontrollers, etc, though most of my work does not involve machinery or process automation. I'm by no means an expert, however.

I'm working to complete an installation of 2xMultiplus 12/3000/120-50 inverters connected to a 6x100AH Battleborn battery bank in parallel configuration. I also have a SmartSolar 150/85 MPPT controller connected to 7x195Watt PV panels mounted on the roof. The Multiplus units are in a split phase parallel configuration. Proper size wiring and current protection devices (breakers and fuses) on both the A/C and DC side are installed and various points(E.G. pre inverter A/C breaker, post PV combiner to MPPT controller, post MPPT controller to battery bank, post battery bank pre inverter, pre trailer existing wiring connection, post inverter A/C to trailer, etc). Properly sized wiring is used based on the current protection devices in place and maximum intended sustained amperage taking into account insulation rating, conduit fill rules (where applicable), etc.

At this juncture I have completed the majority of the installation on the system but have come to a question on proper ground application. Currently all equipment functions without grounding the equipment separately to the chassis(although I have full intention of doing so), and I have tested the system in excess of 250amps continuous DC flow to the inverters for extended periods of time(E.G. by turning on the A/C, electric hot water heater, etc). After working through a number of configuration "tuning" issues, I'm happy with the results, although an added element of safety is left dangling out there.

With that in mind, I believe the following is accurate:

1) Each Multiplus should be separately grounded to the chassis using a conductor of equal size to the conductors used in DC +- in the inverter. In my case 4/0 wire with 105c insulation.

2) The Solar MPPT controller should be grounded to the chassis, again with the same principle outlined in 1 regarding wire sizing.

In both 1 and 2, it would be alternatively acceptable to utilize a wire size equal to the acceptable size requirements for the current protection(e.g. for the battery bank a 300AMP fuse is used) device.

This brings me to my question(s):

Currently the negative and positive leads running to/from the inverters are connected to BusBars rated for 600A each. The positive side, prior to reaching the bus bars from the battery bank is fused, and then runs to a disconnect, then to the bus bar. The negative side, through a shunt and then straight to the BusBar.

One of the terminals on each BusBar runs off and connects to the main trailer wiring via the terminals where the previous manufacturer supplied batteries resided and then into the main trailer DC supply disconnect. This minimized the amount of rewiring needed to tie into the existing DC wiring. The positive side leading to the trailer manufacturer dc wiring is fused prior to reaching the existing trailer wiring system.

The existing trailer appears to have ran a frame chassis DC connection from the negative side of the DC wiring. Should I disconnect this and replace it with a larger 4/0 wire from the battery bank bus bar? Is it acceptable to leave it, and run an additional negative wire from the BusBar directly to the chassis(near the existing ground bar on the trailer)? Would/Could this create a ground loop/other situation with multiple DC paths to the chassis ?

Additionally, since the Multiplus requires a ground, should I route that to the negative BusBar, instead of a separate ground out to the chassis, and then use the larger ground noted above? The same applying to the MPPT controller. Similar to this:

In the aforementioned diagram, it would appear all negative and ground connections are terminated on the same negative busbar, and then a single chassis ground is ran to the frame. If that is the more suitable way to approach it, would it be necessary to disconnect the existing DC negative to chassis run the manufacturer installed(I would think so)? How would energizing the inverter chassis with high voltage A/C impact the DC negative connected equipment in the case of a short to the inverter housing using a common busbar scenario(or for that matter into the chassis) ?

I'm trying to determine the most ideal path forward to ensure safety and minimize complexity. The wiring space is extremely constrained as well. Any recommendations are much appreciated.

Thanks in advance for any thoughts.


chrisk asked
green-monster answered ·

3 Answers

AERL Earth Guard detecting Negative to Ground fault on MultiPlus II 3000/48


Installing a ground fault detection device (the AERL EarthGuard) which references PV +, PV- and Ground.

System is 250/100 MPPT, 3 Multi Plus II 3000/48 / 35-32s, Kilowatt Labs 3.55kWh modules x2.

It all works fine, but when I installed the Earth Guard, which was the last thing I did. It detected a fault between ground and negative. Which I've isolated to be coming from the MultiPlus II.

Is there functional negative grounding in the MPIIs? Is there an option to turn this off?

The AERL manufacturer said it could be a faulty unit.

Isaac Shannos asked
Isaac Shannos commented ·

1 Answer

Is it possible as a customer to get a installation manual, that I can't find online about easysolar 24/3000/70?


In fact I would like to be able to progrès in my installation, without bothering my dealer especially on a Sunday, and I find that it lacks some info for an individual for the connection and config of an easysolar 24V, 3000VA, 70A.

Normally in manuals, we should find features and installation instructions, and the first diagnoses of Troubleshooting

This is the case for the mppt controller and the inverter charger that makes up this easysolar!

But I can't find the right one, for the whole easysolar.

I was on the victron site, the support section...

Which evokes:

1) Manuals

2) Suppliers

3) here ;)

In manual, I find a sub menu that inclues 'easysolar'

I selected it, And nothing about my easysolar 's manuel , but more interesting and technical notions of the rule of 1 to 1 regarding AC coupling, or info on VE, direct and many other things but not the manual I'm looking for (if possible in French)

I also go to see the 'old documentation' section

Nothing found either.

Basically what is specific to the regulator, the charger/ inverter, CCGX that I have the manuals of these sub-elements.

For a regular installer, It's simple!

I hesitated to disassemble the bottom hood where are the circuit breakers ..., on the face of it, it was good to do and for a concrete example:

the connection of the battery (classic lead) :

Or can you find the manual of this circuit board and its elements where you have to connect at half height of this easysolar the cables of the battery

Admittedly to say the least battery is written on the PCB, But for the most two screws could have been possible with a black element between the two (fuse?) for the positive connection.

In new approach to this philosophy victron (which I still like hihi) I remain a little in hesitation, battery connected, the CCGX screen of the easysolar lights up without having to intervene on any button the central button between the lights remaining on off

We don't know for sure if we should continue with settings? I saw that on my Android app a new 'friend' (smart mppt...) was present, so I allowed him the connection and the update proposal, I launched it, then updated it surprised me but maybe it must be incremental, and that went well ...

Logically I was going to continue to cable the entrance photovoltaic panels ... If this screen hadn't lit up on its own.

Finally, the process for installation, and therefore the first commissioning seems incomplete to me with the documents handed over.

Just before I started with the installation of a BMV712, and for this element I followed the installation procedure from A to Z, no doubt, but in terms of the interconnections between the basic elements of the easysolar,

My next Doubt concern the 'ground' markings, on the PCB.

I just have to connect the mass of the case below at the bottom right on the ground socket of the installation or I must also add the points notes ground on the circuit board ?

Well understood that there is a secure management of this next ground connection whether the AC input is connected or not... And I think that must be the right option for France by default.

Finally I think I lack a general manual on the whole of this easysolar.

The wiring documents provided for the multiplus do not mention the peculiarities of this easysolar and the interconnection already wired for most of them.

Thank you for any help on these multiple uncertainties. And especially on the magic link download of the installation manual of this easysolar.

Kind regards

raymond-nicolas asked
JohnC answered ·

1 Answer

Earth bonding inverter output in a camper installation

I have installed a Phoenix 12|500 inverter into a panel van camper conversion, with the DC input side connected to the 12v leisure battery & earth connection bonded to the metal chassis of the vehicle.

On the output side I am running a fused (3a) 3-pin plug into a two-gang RCD-protected plug socket, providing short circuit protection in the instance of a live fault raising the potential of the chassis to 230v and some poor soul stood on wet earth outside knocking on my door.

However I am left wondering what overcurrent protection there is on the output side. From what I understand in the product manual there is no continuity of earth (chassis) bond from the input to the output side. Ought I make an additional connection to the vehicle chassis on the output side to facilitate overcurrent operation of the 3a fuse in the case of an appliance fault?

Happy to answer queries and share pictures if beneficial. Thanks for helping with my head-scratcher..

ostrichwrangler asked
Kevin Windrem answered ·

1 Answer

Multiplus External Ground Relay control Does not Work

Hi Victron,

I have a SplitPhase Setup with an 48/5K 230v Multi + Autotransformer. The setup Manuals tells you to Disable the Multi+ Internal Ground relay by removing the check mark in VE Configure.


and that will enable the External Ground relay control at the Multi+ to use the Ground relay at the AT.


Multi+ gnd relay connection

I realized this AT external ground relay does not close at all. So I tested the relay applying 5volts and the relay close (Relay has a label attached that said 28VDC). Then I tried to read anything coming from the Multi+ Gnd relay green contact and nothing is coming out (no voltage, no Contact close)

I tested having the Multi in Inverter mode and connected to the Grid and the same results.

Multi+ Firmware: 473

Additionally, I tested changing the dip switches has the Manual advise and still no control over the AT gnd relay.



Thanks for your help

Yusef Neblett asked
Yusef Neblett answered ·

2 Answers


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