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I have a Victron MPPT 100/30 which I will be using on a 24v system. I know the max wattage is 880w and max OCV is 100v I have a choice of two solar setups. 3 x 300w panels which will be max 900w and OCV in series 102v or I can go with 3 x 250w panels which means it will be within the MPPT...

I am staring my first off grid setup which at first will power a freezer, water pump, microwave and some smaller appliances (not all at the same time). I have setup smaller van solar systems but would like to now start this one in my den in hope to build on this to run most of the house in the...

I am looking at getting a LifePo4 battery for my van, I would like to have Bluetooth tech included as a bonus. I am looking at the KS-energy ones. Anyone use them and what are your experiences with these batteries. Model I am looking at is the KS-LT150B ks-lt150b

I will soon be getting my inverter for my off-grid setup. I was going with the Phoenix 48v 3000VA inverter intially one then adding to it if I need more power. I have one load a freezer which will need to have a backup supply if the inverter/battery fails. I was going to use the remote relay on...

I am just setting up my Victron solar. I have a 150/45 MPPT and according to the data sheet this will put out 45A on a 48v system. They are recommending a 50A fuse/MCB. I like in UK and do not have ideal solar conditions and the panels are not at the correct angle for perfect solar so I would be...

Can anyone shed some light on the sunshine inverters. They have a C-Series model which is slightly different priced to the other model. Anyone know what is the difference apart from carries the e-Mark, this European conformity mark issued by the transport sector On the 3K model C-series has...

My second question on my Victron 150/45. The specification show I can add up to 2600 watts solar with 50A max short circuit current and 145v open circuit current. I have 300watts solar arrays which produce the following: Max Current (Imp) 11.8A Max Voltage (Vpm) 27.9V Short Circuit Current...

So I have just watched Roland W vlog very good Vlog on PE with inverters I am Ok with the understanding of PE - RCDs and the need for them In his vlog I believe he is saying any inverter can be earth neutral bonded to provide a PE system before RCD to allow the RCD to work. So i am wondering...

Has anyone used the CONVERSOL V5 SUPER OFF GRID-INVERTER - 5KVA, 48V, PARALLEL FUNCTION, MPPT, BLUETOOTH inverter What's your thoughts on this one, and will it run ok on a VOLTACON LITHIUM ION BATTERY 2.4KWH 48V battery

I was doing my first startuo on my multipluss 5KVA inverter and on initial startup it blue my main fuse. I fought the inverter would have a soft startup but now I think not. So I am trying again and doing a charge via a 1M ohm resistor (all I have). but strange thing is happening with voltages...

Hello All I am looking at starting my first off grid set up. This will be small at first as I get more gear and learn to get better setup. My first project will be to run the check freezer we have on an inverter. Solar and MPPT batteries etc I am Ok with for now, but i need some advise on the...

Just got my multiplus running but I am getting low battery shut down for some reason. Whe solar MPPT is switched off the inverter runs all ok. I have pulled 50 amps for a few min with no issues. With the MPPT switched on as soon as I put any load over 10 amps the inverter shuts down with low...

Hello All I am looking for a good 200A DC breaker for my system I see Voltacon do a 120A and 250A but I have a multipluss II 5KVA which has a recomendation of 200A fuse/breaker. Link of there breaker Voltacon Any recomendation where I can get a good quality on from UK

Hi All, on my system I want to install an auto change over contactor on the 240v inverter output so that if the inverter was to fail or low battery shutdown the load on the inverter will auto change to the grid supply. I was thinking this could be easily done with a 240v contactor energised by...

So I think I have finally got my shopping list for my first solar install. This is a small install and 3kw should be fine for first stage. I already have 1200 watts solar panels (300w x 4 - series connected = 12.6A - VOC 136.4V) For MPPT going with Victron 150/45 Inverter Sunshine C-Series...

Hi all, this is a general question about size of cable links between batteries. I have seen some advice given that between batteries the cable will be calculated to take the battery bank load for example 30 amps. I was under the thought that the cables between batteries should be able to take...

Hi all. I have been talking to a few people on a Facebook group about the NDS SC300M solar controller. This controller is a MPPT device which charges the leisure and starter battery from solar panels They have found when the sun goes down there is a current draw from the leisure battery with...

I wanted to see if my understanding of the dangers of double earth-neutral bonding on a house system is correct and if I am missing other potential issues. I understand that we should not connect any second N/E bonding on any system and how this PEN system works, but I would also like to know...

I am having some issues with my RCD intermittent tripping on my system. I have a fully off grid system. 5Kw Victron inverter feeding a workshop where the inverter and RCD live, and outbuilding. Between the two buildings I have a 4 mm Armoured cable. My RCD tripped out mainly when turning on...

Hi, Guys. I am looking at installing LifePo4 battery's into my camper van. I have three so far i am looking at and was wondering if anyone has any experience with them and any recommendations. I will be starting of with 100 aH batteries. This one from QS looks good HD model at £660...

I have choice getting two 100aH lithium batteries with 70A max charge £800 to run 24v system or one 24v 150aH battery max charge 80A £1400 Two 12v 100ah battery's will be 0.33p per watt One 24v 150aH battery will be 0.39p per watt My questions are 1. Will I be better of with one 24v battery...

I am looking at designing and installing a smoke detection system in my solar cupboard which will shut down the system if either smoke is detected or an emergency button is operated. Attached is my circuit design and a description of the circuit. I would love to know your thoughts on this...

I am starting my first off grid system which will run a chest freezer 100W, pond pumps 50W, Tv for about 2hr 42W and 500W computer now and again. Over time this will increase as the system increases. Solar will be 900 watts at first hoping to increase to 1800w over the year Inverter will be...

I would like to ask a few questions about earthing grounding and bonding on my system which will be UK based. To make things clear (hopefully ?) with terminology I will try to specify words and what I mean by them first. Earth or earthing connection will be a coper rod in the ground (pink in...

Hi guys. I am starting my new off grid solar setup and wanting to discuss safety with respect to DC grounding the array and MPPT. I am using all Victron MPPT and separate inverter. I understand the requirements for DC grounding but within the USA there is a requirement for a ground fault fuse...