Spot on - the regs do need simplification and consolidation.
I have seen multiple horrific inverter/battery/PV installations by licensed electricians for a solar rental company, where the DB board is a dog's breakfast with AC and DC wires running long distances in the same trunking, AC MCBs used for DC circuits, no labelling, no warning signs, switches for essential and non-essential circuits mixed on the same rail, and plenty other bad and non-compliant practices. Just a wall of switches and stuff and the residential consumer wouldn't know what to do in an emergency. And one electrician told me he does not own a copy of SANS 10142 and sees no reason to buy one either. A frustrating reality in South Africa, some of just a pure survival measure.
So perhaps these documents and regulations should be made freely available (as in free, not R1300) with quarterly updates so that even the DIY guys and unregistered installers can learn to do safer installations. The idea may be controversial, but the DIY guys and unregistered installers cannot be stopped, and it is not endorsing what they do. And some of their work is absolutely superb too. They just CAN NOT be stopped, any more than SAPS can stop crime or enforce the ample laws that SA already has.
So perhaps give everyone ample information to learn how not to kill themselves or others, including cheat sheets with a list of all the typical bad practices, and set up a framework for oversight by licensed electricians. I do not think this will eat into the income of licenses electricians doing proper installations, especially in three-phase and large industrial/commercial/retail environments. And some of them may even become licensed electricians – that has to be a good thing. I’m sure the ECA and some electricians will have a stroke reading this, but unusual times need unconventional solutions…
I believe that the lull in load shedding is temporary as there is no underlying improvement in the deteriorating base load generation, transmission and distribution infrastructures. So many municipalities are bankrupt with few/no spare transformers and switchgear. Transmission inadequacies for N Cape IPP projects to connect to the grid. Koeberg 2 due for long term shutdown. Significant parts of Kusile and Medupi still offline. And when they fix those there's the long list of older, ailing coal-fired stations that are approaching decommissioning. And so many unknowns - like how much of the recent intense load shedding was linked to political and wage negotiation (extortion) issues? And what synthetic pressures will emerge leading up to the May 2024 elections – more or fewer blackouts?
I think that up until now the primary reason for battery backup and solar installations in residential, industrial and other commercial has been to alleviate inconvenience and business/lifestyle disruption. But as the tariffs inevitably increase, the motivation will change to cost saving as it has in other parts of the world. People with only battery backup will add PV and a feed-back meter and change to pre-paid to save money and perhaps even make some back (if their inverter is capable and permitted to be grid-tied). Anyone who installed a proper inverter and battery (say 5-10 kVA, with 10-20 kWh of battery) without PV has already written this off as a sunk cost - they knew it was never going to save money and it was done out of frustration. The time is right for these to add PV, save money and recover their investment too.
Some spreadsheet modelling shows that adding PV to these battery backups for 70-80% of a households' total electricity bill can be paid off in as little as two years (just the PV additions), depending on the roof geometry and usage patterns. That's a very short period until one starts saving a few grand a month. It's also not difficult to get to 100% (roof geometry permitting) but remain on pre-paid (to cull the monthly service fees) just-in-case...
Gauteng proposes to train 6,000 “solar installers”, whatever that means. I say give anyone who’s willing to to learn all the documentation possible so that they can learn how to do it properly. Lack of education is not solved by monetising it in South Africa.
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