Geoff.D

Hi. I am looking to try and repair/reuse a portion of a GiZZU UPS 2400mAH. The unit was fried by a power surge. The battery and the regulation circuitry is all okay. It is the Charger section that is faulty. A circuit diagram would help a lot to be able to determine what is reusable. Does anyone know where to get circuit diagrams for GiZZU min UPS units please?

And reconsider the way in which the batteries are connected to the inverter. Have a look at this write up about ensuring the cable distances are precisely the same length always. The same reference is found in the download section on this forum I think or in one of the threads dealing with the basics of power and electricity. http://www.smartgauge.co.uk/batt_con.html Or, scan this forum for more about battery balancing. There is plenty of information and advice about adding strings in parallel, all with one common theme throughout and that is cable lengths, quality terminations and proper connections.

I also came here to see what others' thought about the idea of "upgrading" UPS units with larger batteries. I generally advise against this idea as well. Mostly, the effort is just not worth it. I am going to if I may, refer guys to the power forum and this thread in particular for a "second opinion".

So, How/where does one set your "Location" edit: Found it! and set!

Hi, Jason, Does this facility still work like this?

Two Identical threads started at about the same time? Same person? Wonder if Admin could establish if the two ID's are the same person and then merge the two threads, or ask for this one to be deleted? https://powerforum.co.za/topic/2887-system-earthing/

A few "rules" passed on to me by an old style electrician. (1) Use multistrand cable in conduits because of flexibility and ease of drawing in wires. (2) Surfix is quite brittle and stiff to work with in small boxes, so avoid if at all possible. (3) Use the correct gauge according to regulations. 1.5 mm for lights, 2.5 mm minimum for wall sockets, 4 mm for stoves hobs, geysers. (4) Avoid ALL hidden connections. Hence why the standard is to diasy chain because all connection points are easy to reach. (5) "Never" join cables and then hid the joints ---- they must be in boxes where they can be accesed if necessary. and use crimpee ferrules and insulated for "straight" joints. AND please use a proper crimping tool NOT a pliers! (6) Avoid connection strips if you are able to --- use screwits of the correct size for the cables. I personally hate both types. (7) If you do use connection strips - get good quality that are the correct size for the cable and current rating.