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Thread: Saturday at home, installing an inverter

  1. #21
    Silver Member bones's Avatar
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    thankyou Andy now i can get
    started on getting parts

  2. #22
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    Quote Originally Posted by bones View Post
    thankyou Andy now i can get
    started on getting parts
    got a e-mail today from the person setting up
    the move send me a bunch of stuff to fill in
    and asked that i get started on my passport
    next month he will be setting up possible
    employers to speak to us and get a feel what
    is expected of us and what we need so on

    it is actually happening sh_t i never thought i
    would go but here i am doing exactly that

    i dont care about the color of the grass or
    crime or politics it is just time to go
    I thought you were packing up and leaving SA ?

  3. #23
    Silver Member bones's Avatar
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    Quote Originally Posted by HR Solutions View Post
    I thought you were packing up and leaving SA ?
    can take up to 15 months in the
    meantime i have a business to
    run so that i can pay for stuff

    my wife does graphic design and
    takes her work home she does
    freehand and pc sketch so she
    needs her lightbox pc scanner
    and all the rest working we cant
    run a generator all the time

  4. #24
    Full Member Tonye's Avatar
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    Hi Andy,

    Nice job.

    Just completed an inverter installation for a client
    Click image for larger version. 

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    Moved essential circuits from main DB to a Mini DB with Earth Leakage unit and a changeover switch.
    Used a 24 v 2400 VA inverter with 2x 105amphour deep cycle batteries.

  5. #25
    Diamond Member AndyD's Avatar
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    Nice looking installation, your trunking is neater than mine

    Looks like a lot of essential circuits in the back-up sub-DB.
    _______________________________________________
    I am special and so is Vanash.
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  6. #26
    Full Member Tonye's Avatar
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    Quote Originally Posted by AndyD View Post
    Nice looking installation, your trunking is neater than mine

    Looks like a lot of essential circuits in the back-up sub-DB.
    Thanks Andy,
    the trunking is quite expensive but comes with all sorts of inside, outside bends & end caps.
    Saves on having to mitre bends.
    I have moved quite a few circuits. 3 light circuits & 5 plug circuits.
    Client currently has 70x 50w down lights. This is being changed to 4 watt LEDs.
    The plug circuits are feeding the following
    Study ( small PC, Modem router, inkjet printer & a laptop.
    Living room ( Led Tv, Dstv decoder & 2x table lamps)
    Dining Room ( two table lamps)
    Formal lounge ( 1x standing lamp, 1 table lamp)
    Main bedroom ( 2x table lamps, 1 x led Tv)

    The client is aware that when running in inverter mode, he cannot run everything simultaneously
    but still has the convenience of being able to run most of his plug & light circuits.
    Obviously when running from mains, there are no restrictions.
    The system has been designed to allow an upgrade to a larger system if required.
    When running essential items the changeover can be left in inverter mode to supply uninterrupted power supply
    in the event of power failure.
    Fridges, pool pump, air cons, microwave, washing m/c, dishwasher, geyser, stove etc have been left on Main DB.
    I was fortunate that the circuits I moved did not include the above.
    I was going to do a total changeover at the main DB, where the client turns off high current items prior changeover
    but the Main DB is three phase and did not want to fiddle whith a 4 pole changeover with bridged connection on inverter mode. ( not sure if this would pass a COC)
    One problem I had was when tracing neutrals for the lighting circuits, I found one light circuit that even after disconnecting all the neutrals still powered lights in certain lights. Obviously a major neutral to earth fault. Two of these lights are large chandeliers which can be reached easily.
    I have informed the client to contact the electrician who issued the COC to rectify the problem.

  7. #27
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    Quote Originally Posted by Tonye View Post
    Hi Andy,

    Nice job.

    Just completed an inverter installation for a client
    Click image for larger version. 

Name:	image.jpg 
Views:	339 
Size:	19.2 KB 
ID:	5480



    Moved essential circuits from main DB to a Mini DB with Earth Leakage unit and a changeover switch.
    Used a 24 v 2400 VA inverter with 2x 105amphour deep cycle batteries.
    What does something like this cost ?

  8. #28
    Full Member Tonye's Avatar
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    Quote Originally Posted by HR Solutions View Post
    What does something like this cost ?
    Total cost for this installation R22000.00 excl

  9. #29
    Diamond Member AndyD's Avatar
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    Quote Originally Posted by Tonye View Post
    Thanks Andy,
    the trunking is quite expensive but comes with all sorts of inside, outside bends & end caps.
    Saves on having to mitre bends.
    My trunking was recycled second-hand It was all I could find at the time and the installation was in my own office so I wasn't too worried.
    Quote Originally Posted by Tonye View Post
    I have moved quite a few circuits. 3 light circuits & 5 plug circuits.
    Client currently has 70x 50w down lights. This is being changed to 4 watt LEDs.
    Sounds sensible. Trying to accomodate 50w halogen downlights would be pointless and expensive. Every installation is different, you installed your inverter at the main DB and separated 8 circuits out into a back-up Sub DB, I installed my inverter very similar to installing a UPS where it supplies only my office circuit. The other supplies to the kitchen and lounge are run as temporary extension leads. This was just to keep the complexity down and to allow it to evolve easily for future, if it had been a customer installation we'd have also installed a subDB specifically for back-up and marshalled all the apporopriate circuit into there.

    Quote Originally Posted by Tonye View Post
    One problem I had was when tracing neutrals for the lighting circuits, I found one light circuit that even after disconnecting all the neutrals still powered lights in certain lights. Obviously a major neutral to earth fault. Two of these lights are large chandeliers which can be reached easily.
    I have informed the client to contact the electrician who issued the COC to rectify the problem.
    Yeah, pre-testing the circuits beforehand is critical. The lighting circuit probably has a borrowed or crossed neutral with another circuit, if it was an N-E insulation fault it should have shown up under normal testing if a CoC has been recently issued.

    Quote Originally Posted by Tonye View Post
    Total cost for this installation R22000.00 excl
    I think your pricing is pretty good. I'm not sure what inverter you've used but I know if I was quoting to install the setup I outlined at the beginning of the thread it would be around R26 - 28K including labour. You've installed a subDB and changeover switch but I've got extra battery capacity and a larger inverter so it's swings and roundabouts.
    _______________________________________________
    I am special and so is Vanash.
    _______________________________________________

  10. #30
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    help with installing inverter

    Hello Andy,

    I am considering installing a 3KW inverter system at my home. I must say I have found your inputs in the forum very educative and thank you for the same.

    My initial considerations were Honda Inverter Generator Eu30i costing around R20000 versus an inverter. I abandoned the idea since it is not available locally here in East London and also due to issues pertaining to maintanance. I am planning to connect ( a fridge, tv, dstv, router, lights / all led and rarely a printer) I thought my power requirements are similar to your's or probably less.In your post you mentioned that a system like your's will cost more or less in the same price range. I received a quote for Axpert 3KVA unit with 4 trojan batteries including installation for R50000. The Axpert unit was quoted R17000 and the batteries (Trojan deep cycle cells) R20000 (R5000x4). This is beyond my budget at the moment.

    Are you able to suggest any reliable units as well as batteries that can bring down the costs involved. I came across Maximus batteries which were quoted R1500 but I am not sure how reliable they are or the life expectancy for the same.

    I am currently faced an occasional 1 or 2 hour long power cut. Hence after going through another post from you I was also considering voltronic unit 2kva to start off with and add another one as time goes by depending on my requirement. however I am unable to get any information on the particular unit or its price. I am also wondering if it would be a very expensive exercise to add more units.

    I will greatly appreciate your feedback in the above matter.

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