Split conduit for the solar wires

[GCE]

At least this clears up the original question, you can use split conduit to for added protection.

It also clears up the talk about the double insulated cables in the same wireway. To add to the confusion, what about the single insulated 6 mmsq earth wire installed in the same conduit, I see most installers have a single insulated earth wire inside the same wireway ?

You need to understand the logic behind the regulations - The reason for running positive and negative in th esame wireway as earth is for in case of arching the neg or live can short to earth and the inverter will detect the fault and switch off

Wire ways are still under consideration under SANS60364-7-712 - SANS 10142-1 is clear on using a wireway

712.527 Selection and erection of wiring systems to minimize spread of fire
Under consideration.

[GCE]

The unfortunate part with the way people read regulations is to suit themselves - muddy the water and confuse everyone so that all an sundry then say there are no regulations for solar installs.

Solar install is the same as normal wiring besides there being one or two other points which are clarified under DC .

We been installing DC systems from early days with motors , UPS battery systems etc

[GCE]

Question: Using the black split conduit. Is it compliant in SA to use it everywhere? High Rise buildings etc.?

Further to my previous post on split conduit and having a think on it

SANS10142-1 clause 6.5.1.1 i) would answer that one as well


6.5.1.1
i) no part of the wireway shall be flattened, split or damaged;

[Isetech]

From what I understand, you have to have protection where the solar wire and earth exits the roof, which means you need some form of protection, what wireway do you use?

Why dont we install twin+E in a wireway, because it is double insulated?

I am trying to wrap my head around the logic, its been a hectic 2 weeks of challenges with high end NVR's and IP cameras, software, firmware, another 5 hours in meetings today trying to resolve challenges and slow networks.

Further to my previous post on split conduit and having a think on it

SANS10142-1 clause 6.5.1.1 i) would answer that one as well


6.5.1.1
i) no part of the wireway shall be flattened, split or damaged;

[GCE]

From what I understand, you have to have protection where the solar wire and earth exits the roof, which means you need some form of protection, what wireway do you use?

.

There are manufactured units designed for different roof structure exits - We prefer taking the conduit over the edge of the roof with a drip loop into a junction box with a breather at the bottom before entering the roof space .
It stops any water ingress and damage to undertile waterproofing .

[GCE]

Why dont we install twin+E in a wireway, because it is double insulated?

.

Maybe because the design and manufacturing process for the " sheath " is different to street insulation ?

[Isetech]

Thats not a bad idea because you could fit your DC isolator on the side of the building

There are manufactured units designed for different roof structure exits - We prefer taking the conduit over the edge of the roof with a drip loop into a junction box with a breather at the bottom before entering the roof space .
It stops any water ingress and damage to undertile waterproofing .