Posted December 14, 20213 yr Job in progress it will only have battery backup for now. Than 20 x 435W panels will go up in January. Also complete new relocated DB board fitted with CBI Astute timers for geysers.
December 15, 20213 yr Author Got essentials working in UPS mode till January when panels go up. There is a second change over switch for non-essentials incase Eskom have long term power outages.
December 15, 20213 yr 10 minutes ago, Gerrie said: Got essentials working in UPS mode till January when panels go up. There is a second change over switch for non-essentials incase Eskom have long term power outages. These DB boards are very neat. Where did you get them from?
December 15, 20213 yr Author 1 hour ago, PowerUser said: These DB boards are very neat. Where did you get them from? They were build by EBM in Johannesburg you give them the line diagram and they make everything fit together, the board is a bit biggish but space was a requirement for add on later and it’s a pleasure to work on.
January 13, 20223 yr Author After a few weeks break got busy again with installing panels and surge protection/isolation box with few progress photos.
January 13, 20223 yr On 2021/12/15 at 3:28 PM, Gerrie said: They were build by EBM in Johannesburg you give them the line diagram and they make everything fit together, the board is a bit biggish but space was a requirement for add on later and it’s a pleasure to work on. Agreed that they look very professional, good to know about EBM.
January 13, 20223 yr 3 hours ago, Gerrie said: That looks like aluminum on galvanised iron. How do you propose mitigating the effects of galvanic corrosion? Edited January 13, 20223 yr by YellowTapemeasure
January 14, 20223 yr Author 8 hours ago, YellowTapemeasure said: How do you propose mitigating the effects of galvanic corrosion? That was my concern as well but we had to work with what we had. To try and mitigate the corrosion we will be installing more earthing, all the aluminium pv frames and steel struts will be bonded together. This hopefully will create much more contact points that should reduce galvanic isolation. I have done almost similar on my own install and more than three years down the line there is no visible corrosion.
January 14, 20223 yr 2 hours ago, Gerrie said: That was my concern as well but we had to work with what we had. To try and mitigate the corrosion we will be installing more earthing, all the aluminium pv frames and steel struts will be bonded together. This hopefully will create much more contact points that should reduce galvanic isolation. I have done almost similar on my own install and more than three years down the line there is no visible corrosion. Alberton is not the most corrosive environment, and you may just get away with it. Wouldnt advise doing this in coastal applications though.
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