When does solar not need a COC?

[leeza]

I found another thread on this forum that suggested less than 50v and not connected to the db https://www.theforumsa.co.za/forums/...ehole-Pump-COC

So
1: A 48v solar pool pump like https://borehole-pumps.co.za/product...ar-large-pool/, would this and some panels mounted on the roof in parallel not need a COC?
2: A battery independent inverter not connected to the db, like a trolley inverter. If the panels are below 50v. Does attaching the inverter to the wall with Rawl plugs change anything. Is EL still needed on the output?
3. Adding panels in parallel to keep voltage below 50v to my Axpert connected to the db. The electrician who did the COC there said small panels don't affect my COC, I am not sure, what constitutes small etc

[GCE]

Below is an extract from SANS 10142-1

Pretty much answers all your questions as to - Yes it will need a COC


Introduction
In this edition an attempt has been made to move towards the IEC codes:
extra low voltage (below 50 V) and d.c. applications (up to 1,5 kV) have been
introduced as new requirements owing to the extensive usage of, and
increased fire risk that result from, high load currents. This part of
SANS 10142 does not intend to cover the LV control circuits of machinery or
system components that are external circuits between separately installed
parts of the machinery or system components.

[Isetech]

Something to consider the nominal voltage of many of the lithium battery is 51.2 VDC not 48 VDC.

[GCE]

Something to consider the nominal voltage of many of the lithium battery is 51.2 VDC not 48 VDC.

even the 48v would fall within the ambit of "extra low voltage" and that the output of the inverter will be +/-230v

When you come to panels the voltage is around the 40v mark and strung together increases to anywhere between 80v and 100v DC

[Smiley]

When you come to panels the voltage is around the 40v mark and strung together increases to anywhere between 80v and 100v DC

SunSync MPPTs are going up to 425v or some such.

Victron has 150v and 250v and then a new 450v MPPT.

[Isetech]

Yip, the start mppt range is 150 - 425 VDC

PV input voltage is 125-500 VDC

Startup voltage is 125 VDC

In saying that it is difficult to keep up with Sunsynk, I get the "read the manual" repsonse on many occassion from the people who dont know the answer. If you have ever tried to use a Sunsynk manual you will know why there are so many questions being asked on social media.