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javadog

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Posts posted by javadog

  1. On 2020/08/28 at 10:47 AM, Barryv said:

    have you don't it your self?

    I did yes. 

    Basically got all the needed components from various stores. 

    Worked out the neutral bar with a combination of multi meter testing and cowboy method, well only one cowboy method. 

    Ensured I had the correct wiring diagram about 5 times over, ensured my life insurance was set to cover stupid stuff

    and then set it all up. 

    All I need to do now is put the trunking in so that it looks a tad better.

     

  2. Awesome thanks, I see that there are inline fuse holders and then the one you mentioned in the google search. 

    apart from price difference and fuse type, any benefits to the Mersen  for example

    Ideally the fuses to batteries can live in a box on  the wall but just curious as there is quite the price difference

    image.png.ec5ba0d8bb7da3208c4d4b121b9c73d1.pngimage.png.da82a33ad639ceec407daf4387e00147.png

     

     

  3. So, final piece of advice needed. 

    Basically if I follow all the advice I will need the following

    I have a 5KVA ,48 volt inverter and 4 x 12v 95AH batteries in series

    I have it that the system can put out 23 Amps max (5000w/220v = 22.2)

    DB Board: 

    1 x earth leakage CB (40amp) 

    1x normal CB (40amps) 

    Out side DB board: 

    1 x manual change over switch

    Inverter

    1 x 100 amp DC fuse for the batteries, or do I need one on both positive and negative?

    And then all the wiring and trunking and stuff

  4. Thanks for the diagram. Because I am an absolute novice with this. 

    On your other diagram the earth seems to be its own circuit connecting only to Eskom power source. what closes the loop? 

    I really appreciate all the help. I will head off tomorrow to start getting the needed switches etc. 

    Thanks

     

  5. Hi Every one 

    Thank you for the feedback!!!

     so from what I understand. 

    Outgoing: I will need to add a CB into the DB board connect that the Inverter ( take a connection from earth to 'power; that and then remove the other connections to lights and plugs)

    Incoming: I will need a CB which runs into an earth connection and from there powers the various other CB (Lights + Plugs) 

    Batteries: I will need to buy a place a fuse box between batteries and inverter to protect that connection. 

    Manual override switch ultimately is optional but would be between the outgoing connection between DB and inverter and incoming.

    If I understand this correctly, I will basically be creating a loop from DB -> outbound -> Switch ->  Inbound as opposed to

    DB -Outbound - -> Inverter  -> inbound.

    And now lets hope it all fits, below is an image of my db board. The first breaker to the right of earth is the geyser, the rest are lights and plugs, stove is gas and oven has its own breaker not on the board.

     

     

    DB Board.jpg

  6. Hi, 

    I have an Axpert 5KVA inverter that I want to connect to the DB board to run the lights and plugs. It was installed at my previous place and was pretty straight forward (Output and Input of 220 volt and then DB board connections, nothing was connected in between, this is how I inherited it and worked flawlessly for 3 years.) , however I have requested several quotes from various electicians and its nearly more to install than to actually buy the system. (pricing is around the 8 - 10K for the installation and parts ) 

    My question revolves around the connectivity of the Inverter to the grid and also the batteries. It seems all electricians build in manual cut over switches between in the inverter and the grid, which they argue is to protect the inverter or grid connection as well as surge protectors

    The other is a fuse box between the batteries and in the inverter for the same reason, but I am not sure how there can be an overload/short between the batteries if they are connected correctly in series. (4 x 90ah deep cycle lead/acid). 

    Ultimately however if this is the correct way, then I will head that advice, or the advice of the forum as I am not an electrician and get the parts from Communica or similar and potential build that system myself as I have a bit of an issue paying huge labour and parts costs for a pretty straight forward process. 

    As always, thanks for the advice in advance. 

     

     

     

  7. Hi

    I need a bit of assistance. 

    I have an Axpert inverter set up as a battery back up solution. I only run the lights and the plugs off the system and ignore the geyser and the stove.  It runs off the system constantly for the fail over, so no manually switching. 

    I have attached the wiring from the invertor alone. So have not included the 'normal' grid power circuit. 

    The issue I have is that when on the grid and earth is triggered the invertor kicks in automatically and power is restored to the plugs and lights. Obviously I need it to stay earthed and not restore power in this scenario, when load shedding kicks in, different story. 

    The key also is to ensure that the stove and the geyser stay off as it is only a 5KVA system and so cannot handle everything at once.  

    Any advice on how best to wire this so that there is earth? 

    Thanks

     

    wiring.PNG

  8. Thanks Coulomb. No panels just yet, will tackle that one later in the year where I would ideally like to run everything off the panels during the day and then batteries in the evening. First however have to get approval from body corporate and all that and then the final hurdle; the finance manager, aka the wife... 

  9. Hi, 

     

    I inherited an Apex 5KVA system and am running 4 x 95AH 12V batteries on it. The system charges via eskom and goes up to 54V 'float' I assume, I pretty much left everything on default. 

    I have tried to search on the forum for a similar issue but with no luck.  

    The query I have is when I test the system or load shedding kicks in the voltage drops straight down to 49,5 volts, then stabilises and runs smoothly for a good couple of hours till eskom feels I can have power again. When the power comes back up it charges itself up to 54V rather quickly. I generally pull 350 Watts on it as it is lights, PC and the TV. 

    Any advice would be great. 

    Thanks

     

     

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