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48V batteries and MPII, DCDC 48-12 - common negative? Yes/no, why?

Hello.


Can anybody give me (or point me to) a proper explanation if the negative from the batteries (48V) and the negative from the DC-DC-converter out (12V) can/should be made common?

Im my case the 48V batteries will feed the MPII, the BMS however requires 12VDC, and therefor I will also connect the CerboGX to the 12V sytem, because this will be buffered - in case BMS shuts off 48V Batteries, the BMS and Cerbo will remain running for a certain time to see what is going on in the system.

If memory serves right, then the Cerbo can only be connected to all other units, if they use a common negative (-)/ground?

So: Common ground yes/no? Why?


Thank you.

basti asked
Paul B answered ·

1 Answer

Wire gauge for MPPT 150/70? 2x435watt (Voc: 85.6v Isc: 6.43amps each) Marine use on 12 lead acid.

Good evening. I have a 12 volt boat with 6 group 31 AGM batteries (4 house/1 engine/1 thruster-generator).

I purchased 2 used SunPower 435watt panels for use on my small boat. A really good deal on 2 year old panels.

The panels are Voc: 85.6v Isc: 6.43amps each (not sure what they mean, but believe max volts and max amps while short circuited.

I purchased a Victron SmartSolar 150/70 controller. I believe I could have gotten away with the 150/60 per the Victron sizing calculator, but little over kill doesn't hurt. The boat will be in the tropics and likely pretty hot inside and outside the boat.

I will run them in parallel to make them more resistant to shading.

In parallel, I assume I'll have about 15 amps max and 90 volts tops out of the panels.

On the boat roof, I plan to wire the panels + to + and - to - before running the two individual wires into the boat. The 150/70 will be mounted about 30 feet from the panels. I looked on a page that said don't exceed a 2% voltage drop. I need 4 gauge marine wire (tinned for salt water exposure) to do 30 feet. BUT, I'm a car guy....4 gauge is for starting a car! 30 feet of 4 gauge seems ridiculous. Is this correct? Its only 15 amps, not starting a car.

On the battery side, I should size for 70 amps (150/70 charge controller rating) and 10 feet max run to reach the batteries. I should then use the same 4 gauge wire. Even if amps are higher, distance run is lower.

Is my wire sizing correct? Thanks all.


serpa4 asked
serpa4 commented ·

2 Answers

Wiring an Orion-Tr Smart 12/12-30 Isolated DC/DC charger on a 2018 Winnebago View

Hello, I'm trying to install the Orion-Tr 12/12-30 Isolated DC/DC charger in my RV. The instructions seem very straight forward but when I add all of the other components it becomes confusing for me. I have included a sketch of the current wiring. It is my understanding that when the engine is running the battery banks are combined via a 1g wire for charging. If I wire in the Orion via the maximum 6g wire wouldn't the 2 banks still be combined via the stock 1g wire going between the 2 banks? I would appreciate any input.

Thanks!

RV wiring sketch pdf.pdf

mr-b asked
Trina edited ·

2 Answers

Fine Strand (1666pc) 4AWG to 150/70 MPPT TR?

The manual is somewhat unclear on this, so thought I'd ask. I've got 1666 strand with 0.127mm strand diameter tinned copper 4WG cable (weave config 7x7x34).

The Manual states a minium amount of strands, but doesn't specify what the maxium strands/the minium strand diameter should be?

Will I be okay to use this wire into the screw terminal?

Ferrules don't appear to be something I could source locally. The main alternative is to source some different cable to go from the terminal to the breaker.


Cheers



abstracted asked
Daniël Boekel (Victron Energy Staff) commented ·

1 Answer

BMV712 shows current but no history

Hi,

I have installed a BMV712 and believe everything is wired correctly, we have a voltage reading and the current also registers values but when we tap the history tab there is next to nothing showing.

The shunt is wired with a single 95mm2 link cable to the negative of a 3x110ah battery bank. That is the only wire that side. The right of the shunt then links into the boat (its on a narrowboat) and has about 3 or 4 load wires coming off it. The battery bank has nothing but link cables going between the negative poles and the positive only has link cables except the most positive battery with the loads again.

Overnight our battery went too low, we inherited the system a few weeks ago when we purchased the boat so I'm not sure if we have a duff battery bank. I'm confused how current it flowing via the shunt yet there appears to be little to no history.

When installing the shunt we ensured all loads got switched off and clicked the calibrate button. Running some loads last night showed a negative current and running the generator this morning activating the built in charger showed a positive current.

The 12v wiring consists of a split charge relay from the starter, solar input and a Freedom 20 inverter and 12v circuits.

When we purchased the boat the previous owner had the first battery feeding the positive and negative loads and some other loads on the middle and end battery. We rewired the bank so all negatives were fed from most negative battery and positives from most positive. I'm not sure if they've damaged the batteries in the way they had it wired up.

stevebates asked
stevebates answered ·

1 Answer

Pre-Charge inverter - Are there potential issues with other DC side equippment during pre-charge?

Hello folks.

Am Currently building a system, and am wondering about the pre-charge-issue.

I have a BMS (SimpBMS), which will (after checking battery parameters) trigger a pre-charge contactor before triggering the main contactor. So far so good. I however wonder, how to pre-charge the inverter, while I have other items connected to the DC side of the battery (see drawing below).

Manually disconnecting all breakers/fuses for the 48V DC equipment other than the inverter, before system-(re)start is nothing I'm looking forward to. A second contactor (as in the drawing) might be an option, but also means additional and ongoing power usage (for my island system), therefor not ideal.

Can anybody clarify the issue, after looking at my over-simplified drawing (am lacking a schematics program)?


Thank you.

[image]

basti asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

Wiring a Victron DC-DC charger - HELP!

Hello,

I want to install an Orion DC-DC Smart 12/12/30 in my van. It would be connected to the starter battery under the driver's seat all the way to the back of the van on the opposite side (passenger side). My question is, if I run the wiring up to the ceiling, to the back, and back down, the distance would be 10m one way (2m up, 4m to the back, 2m across, 2m down), if I run it through the floor the distance would be around 6m one way (4m to the back, 2m across). Keeping in mind derating factors (running continuously for more than 20m, being in a conduit or insulation), I've calculated I need a 0awg wire (50mm), which seems way too big. I don't know if my calculations are wrong? Victron recommends a minimum cable gauge of 16mm for a 5m distance (i'm guessing this would be one way?).

I'd appreciate any help!! Thank you

palomafts asked

0 Answers

Orion smart engine Switch

Hello,


I'm getting a bit confused by the wiring diagram in the Orion smart manual. In this figure (most are very hard to see in the manual it show the ignition switch wired to the engine ignition power and them going to the H pin. but it also shows a bridge to the L pin. If im not mistaking adding this bridge will keep the unit always on..


I would like to have the unit charge from my house bank to my starter and bow thruster bank. I would like this charging to happen only when the engine is on.




[image]



polarseal asked
bathnm commented ·

5 Answers

How to properly wire up BMV-712 to dual battery system

Hello I’ve just recently purchased the BMV-712 for my dual battery system in my 4wd. When connecting up to the shunt do I connect the main battery to the battery terminal side and the 2nd battery and loads up to the load side. I want to able to read what is getting drawn and put back in to the second battery only but also keeping an eye on the state of charge of the main battery. Also do I have to still ground the shunt to the chassis off the load side as well? I have the diagram but it’s a bit confusing

jai-armstrong asked
jai-armstrong commented ·

1 Answer

MultiPlus Not Showing Live On CCGX

Good morning chaps,

I am just after a bit of help/advise. I have just finished installing a Victron Multiplus in a motorhome conversion. It is installed alongside a 70a MPPT solar controller and all are wired to a CCGX. I recently upgraded the firmware in the CCGX as the multiplus and ccgx were previously in a household setup and they have been stored over a year since I purchased them used.

The MPPT shows in the CCGX via the VE Direct cable and that shows fine, showing the solar input, battery voltage etc.

The issue is that the CCGX does not show when the Multiplus is turned on, it shows a symbol for a Multiplus but it always shows off, even when the inverter is on and powering appliances. The Multiplus is connected using one of the blue bus cables to the VE BUS input on the back of the CCGX and I have tried it plugged in to both connectors in the Multiplus but nothing shows up as working. The Multiplus also and has a temp sensor that is connected from the Sensor connection in the Multiplus to the negative terminal of my battery bank (this all came as a used setup kit other than the mppt).

Should it be a case of just plugging in the blue network cable in both the Multiplus and CCGX and it should all display as connected and working? I presume I am correct with the temp to the negative?

The setup and install is pretty much complete, I just want the Multiplus to show on the CCGX as everything is getting boxed in very soon so wouldn't want to have to rip everything out to change a cable etc....


Attached is a pic of the CCGX, I can take more pics of the back and cabling if required.

[image]


Can anyone help out here with some info or advise to get the Multiplus showing on the CCGX?

camperconversion asked
brians answered ·

7 Answers

Smart Blue Power IP22 Charger: Connecting batteries and charging

Dear All,

I have a Smart Blue Power IP22 Charger 24v/16amp for my boat engine. I need to charge a 24v system consisting of two AMG 12 batteries (vestus marine batteries). The batteries were delivered with a voltage of each 14.2 volt and the system showed me (using a multi-meter) 28.x volt. It is my second pair of batteries having just lost the first once (chronically discharged).

Now, as I have used the new battery a bit, it shows me 24.6 volt, meassured with the multi-meter. When I connect the Smart Blue Power IP22 charger and look into the App, it says 28.x volt, but 0.0 amp., So, I'm afraid I have connected the chrarger wrongly or that it is broken (?).

Unfortunatly, the guideance in the manual is not sufficient for me as it only shows the side of the charger, not the batteries. As I was unsure whether I have connected the system in the right way, I changed the connectons, but the system still showed the same values. I would have expected that it would show me an error if I connect them in the wrong way (?).

Through this questions may not be difficult for most of you, I'd be glad to understand whether we should already see amps flowing, or should this only happen when the batteries has reached a discharge below 24v? Can I find better information on how to connect the system and is the above written (connection in different order does not change anything) an indication that the system is defect?

Thank you very much!

Olli

olli asked
tdcgoofy commented ·

2 Answers

Common Neutral in Domestic Situation

Hi All,

I need some solid engineering input on this question of making input and output inverter/charger neutrals common. I have seen the Common Neutral thread which is for a different application. This is a static application situation - a problem I have been battling with for over 6 years on all my projects.

It is essential to state the two key problem causes and why they are not solvable:

1. Our municipal grid has been degrading severely over the last 30 years with poor maintenance causing neutral disconnections and ground-neutral bonding issues on the utility/transformer side. This is getting worse due to utility having little finance and incompetent maintenance staff.

2. House wiring standards are not adhered to in many site cases meaning joins on neutral in ceilings/conduits for multiple electrical circuits. Or missing neutrals. To fix this (compliance issue) takes up a huge amount of time which customers are mostly not willing to pay for so I have found myself working hours, days, weeks and months for free to sort out these issues. Why is this a problem? Apart from the obvious electrical problems and neutral overloading, in my country customers cant afford to go off-grid so we split the house wiring into "inverter powered" and "grid powered" circuit (btw: we have daily power outages everywhere). Which means inevitably we will have a neutral fault or a common neutral somewhere in the wiring due to these non-compliant situations. So it may be worth common-ing inverter and grid neutral in the main distribution to "draw" the connection off house wiring - just a thought as the worst thing is to power a circuit without a neutral - our utility conditions has done us the honor of doing the "hands-on" test for us - to the detriment of equipment or lots of SPDs.

So my question: Is there any electrical compromise I can look into? - to stop me from sponsoring customer's compliance because of the nasty 80% of electricians who cheat and make lots of money.

Maybe some specific protective device or solution including common neutral, a specific SPD? some RCD that works -

* a 30mA RCD is not an option - electricians bypass them because of continuous tripping.

* off grid not an option as customers can't afford it.

* redoing site wiring not an option because customers can't/ don't want to afford it

* me quitting the business is a less than ideal situation as with 90% unemployment rate in my country other lines of work are just as difficult.

So to all the engineers out there who like solving problems please HELP! :D

P.S. I'm an Electrical/Electronics Engineer with more knowledge in Electronics than Electrical Power - I have fair experience with the effect of surges and earthing issues in electronics ;)

Kenyon

kenyon asked
Keith Arnold commented ·

3 Answers

We will have both 48V (motor) and 12V (house) battery banks. Do we connect to a common earth

We are confused after reading Wiring Unlimited about what needs earthing on our boat.

We will have a 48Volt 1200AH battery bank for the electric motor only.

Our house battery bank is 12Volt 480AH.

We have 2 x Victron 2000Watt Inverters from the 12Volt bank.

Wiring Unlimited talks about earthing batteries but I am concerned about connecting the negatives of the two battery banks together. Intuitively it doesn't make sense to me.

But other sources talk about floating DC systems.

So I'm confused.

Thanks for any help.

dave-warnock asked
ben answered ·

1 Answer

Victron 12/12 30 DC Orion TR smart charger

Are you able to charge a 200 amp hour lithium battery safely with a load of around 17 amps (12 volt 3 way fridge) connected to the battery. Does the charger recognise this is an external load and regulate the charging voltage/current to compensate and not over charge the battery.

cheers

wobbly

wobbly asked
wobbly answered ·

2 Answers

Making connection between wire and MPPT

I have a Smartsolar 150/70, and I'm trying to determine precisely how to connect my 10 AWG cable to the IN terminals of the controller. Do I simply toss my bare wire into the connector on the controller and screw down, or is there a crimp connector (with heat shrink) that I can use that will provide a more solid connection?

Stephen Otto asked
vomhorizon commented ·

3 Answers

How to wire battery disconnect to multiples?

Hello,

I traded my Xantrex Freedom XC 2000W in for a Victron 12/3000 120/50 120V Multiplus. I love it. On my previous Freedom XC I had a wire with 12V charge that ran from house battery disconnect on my Jayco Seneca 2019 to ACC input port on the back of the Xantrex. This port is designed to be an ignition switch for a work truck, but also works to shut off the inverter when you hit the battery disconnect and don't want to drain the batteries by. continuing using the inverter.

Has anyone wired a similar house battery disconnect to the multiplus? If so, where did you wire it to? Any programming required?


Thanks,

Jeremy

jeremy asked
wkirby answered ·

1 Answer

Connect BMV shunt Wirelessly to Cerbo GX?

I have an RV installation where my batteries are in one bay, and a Multiplus and Cerbo are in a separate bay. Due to how the batteries are wired, the only place I can install the shunt is in the battery bay, and there is no space to have the Muliplus in the battery bay.

The problem comes from my inability to run a cable between the two bays. A wireless bridge for the VE.Direct connection would solve my problem. I have not been able to find any solution for that. The closest I’ve come is using the VE.Direct LoRaWAN module and a gateway to connect to VRM, but that does not get my battery information available locally (via the Cerbo and a GX Touch 50).

Has anyone else faced this issue and found a solution?

Thanks,
Roger

roger-gregory-allen asked
Peter Buijs - NL commented ·

3 Answers

Do I need a circuit breaker?

I'm putting together plans to add solar to my RV and I think I have figured out what I need, but have one open question. I'll be splicing-in the the new power system to the existing AC input line.

Question is: do I need a 30A circuit breaker added to my schematic? The shore power will come out of a 30A breaker, and there's a 30A main breaker on the existing AC/DC distribution panel.

So is it necessary to add yet another breaker where I'm splicing-in the Multiplus?


[image]

texascharlie asked
elimac commented ·

3 Answers

DCDC & MPPT HELP

Hi all, appologies if this has been answered previously but I’ve had no luck finding the answers I need.

I originally had the SCC075015060R - MPPT 75/15 12/24V connected to a solar panel with 1 x 190a & 1 x 100a Lead Acid sealed batteries In my Ford Ranger 2019


I am now wanting to change to DCDC and I think the unit I need is the ORI121236120 - Orion TR Smart 12/12 30A DCDC Charger but was wondering if it is possible to still run the MPPT so I can plug a folding solar blanket when away instead of having to drive around to recharge. (similar to the Redarc units)

Is this setup possible, do I need any extras such as busbars ect? and does anyone have a wiring diagram of a setup like this to put my mind at ease??? I just want to order all parts and tackle it in one hit.

Thankyou all appreciate any help

Ryan

caspa24 asked
Rob Fijn answered ·

2 Answers

Multiplus 12|3000|120 AC-Out-1 wire size

Multiplus 12|3000|120 AC-Out-1: 75A possible. AWG 6 recommended.

AC-In says to use three-wire cable, AWG 6 gauge. Rated for 50A.

I've seen 6/3 cable say 55A per conductor, so is 6/3 cable sufficient for AC-Out-1? Or use three AWG 6 wires, or a lower gauge like 4/3?

Thanks!

hydroplosion asked
solardude answered ·

3 Answers

Adequate 10/3 Wiring for 30 Amp System with Multiplus 24/3000/70-50 120V

I’m adding 1200 watts PV to my ORV Timber Ridge 30 amp rig. Solars and 6 Battleborn wired for 24 volts.

Running the shore power straight to the MP AC in and AC 1 out to the main power center for powering all AC devices.

Will household 10/3 electrical cable (e.g. Southwire) be adequate for both in and out, factoring in PowerAssist?

Thanks


jerooney asked
jerooney answered ·

2 Answers

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

Hi

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

Bridging AC-Out Neutral with Neutral/GND from Grid Supply when they meet in transfer switch?

Per a suggestion found in a Victron manual, I am looking at installing a manual transfer switch that will switch the Supply Feed going in to my "critical load" sub panel... between the AC-Out of my Victron MultiPlus, and the Grid Supply.


The Manual transfer switch has an isolated breaker that will allow only the Inverter Output L1 or the Grid L1 to be connected at one time to the Load L1. If the Inverters fail, or are being worked on, the "critical loads" can be cut over so they are supplied directly from grid.


The problem I am having, and the question I am asking is: The Transfer Switch has a common bus bar for the Neutral. Is it safe to bridge together the MultiPlus AC-Out Neutral, and what is essentially the AC-Input Neutral in this manor when using a transfer switch?

ee21 asked
Eli Hunter answered ·

3 Answers

Series-Parallel vs Parallel Efficency

Currently I have (3) 100W panels wired in parallel that typically operate in the 17-19v range. During full sun they generate power in the 15-20A range. These are wired into an MPPT 100/50 unit that I purposely over-sized as I expect to grow the array incrementally over time. I have currently chosen the parallel configuration as it seems to have more immunity to partial shading, but I probably incur a penalty during full-sun conversion in terms of efficiency.

Aside from the extra power generated by adding a 4th 100 watt panel, would my full-sun power generation efficiency increase significantly by creating two pairs of series panels (for 34-38v) and then running these two series pairs in parallel? I'm sure the voltage increase would help with any cable losses I might have built into the system. Presently my smallest cable is the 10ga at the panels, but I do have nearly 40ft of 8ga and 6ga flexible copper cabling. The (3) 100W panels are set up as a portable/re-positionable ground array for replentishing (2) series-wired T105 6v deep-cycle golf-cart batteries on my RV. Basically I want to be able to recharge the 30% or so battery capacity that I consumed the previous overnight as fast as the batteries can handle (10% of 225Ah). Maybe someday I'll be able to afford to switch over to Lithium cells, but that will have to wait for now.

Honestly, setting up two separate two-panel arrays might seem like more work, but I think the lighter weight of two hinged panels vs the current three might make things easier to move around. It would also, of course, mean building more cabling and another panel frame mount.

Any relevant wisdom would be greatly appreciated.

packrat


BTW, what is it with the spell-checker on this site? I don't think I made up any new words today. It seems to red underline several legitimate words as well as much of the jargon I would expect used on this site....

packrat1969 asked
wildebus answered ·

3 Answers

Genset to paralleled multiplus 48/5000

Just got hold of an ex mod genset, to use as standby for off grid system, it has 2x 45a outlets, each ran off of same single phase , on separate breakers .now , can I run each outlet to each inverter or do I swap out the 2x45s for a single 90 and just use single cable to feed inverters? What happens if one outlet trips and the other is still feeding just one inverter? Thinking of the symmetry of it all!
many thanks matt

Matt drummond bell asked

0 Answers

Wiring diagram for EasySolar, Venus GX, BMV-702, 12V battery bank (four batterys) and generator.

I have bought those device one by one and little confused what is the best practise to install all device together.

Is there aby apps available where you can chose product what you are using and it gives prober wiring diagram? Or any one can help? It seems that I lost bluetooth application when installing Venus GX to EasySolar.

Device list:

EasySolar

Venus GX

BMV-702

USB bluetooth dongle

12V battery bank (four batterys)

Generator (no auto start)


-JeIlMa

Jere Mäkelä asked

0 Answers

SmartShunt Positive Connection

Must the SmartShunt positive wire be connected directly to the battery post or can it be connected to a positive buss bar 12 inches from the battery?

Thanks

msmolow asked
Guy Stewart (Victron Community Manager) commented ·

2 Answers

Tesla / Victron Overland Vehicle Build - PLEASE CRITIQUE!

Hello! This is our planned system for our overland vehicle build (it's a 4x4 Freightliner Ambulance conversion). We'd love to get feedback on this plan. Is there anything you think we've overlooked, etc. Thanks in advance!

[image]

spasq0712 asked
Daniël Boekel (Victron Energy Staff) commented ·

2 Answers

Smart Solar MPPT 100/15 long wire to battery and voltage drop compensation

I'm about to use controller to charge agm battery on my fishing boat. The battery is powering electrical motor. Panel and controller are on land so the wire between the Smart Solar and battery is about 4 meters (12 foot) long. I'm about to use 6mm2 wire. Is there going to be problems due voltage loss? Is there something I could do mitigate the effect? I used calculator to calculate the voltage drop should be about 0.35v. Can I set offset to the controller so the voltage at the battery end would be sufficient?

anselmus asked
Matthias Lange - DE commented ·

1 Answer

MPPT 100/20 internal breaker

Hello all, hope this community can help.

I have a van that has all loads (except inverter) going through the solar controller (MPPT 100/20). They are properly fused with a blue sea systems fuse block and there is a fuse between the block and controller as well. Occasionally when I start my diesel heater the whole system resets. Everything blinks off for a second before coming back online as if there is some internal breaker being blown in the solar controller. No fuses ever blow. I've tried adjusting the load settings in the controller to account for any sudden voltage drop being the issue, problem its intermittent so I'm not sure if changing those settings has solved it or not. I have lithium batteries so sag should not be the issue but if I turn off everything else then usually I can start the heater without the system resetting.

Hoping you can shed some light on this issue for me. Thanks

expresslife asked
expresslife edited ·

0 Answers

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