Page 4 of 4 FirstFirst ... 234
Results 31 to 35 of 35

Thread: COC for PV installation

  1. #31
    Diamond Member
    Join Date
    Apr 2010
    Location
    planet earth
    Posts
    3,943
    Thanks
    153
    Thanked 317 Times in 287 Posts
    Quote Originally Posted by Smiley View Post
    I rather unplug the panel cables from the panels, and pray, if I am around. Otherwise it is an insurance claim, if you have that cover.
    That right there should be your main concern...insurance cover...so long as your insurance company is happy to cover the installation in the event of a strike...fire or death.

  2. #32
    Platinum Member SilverNodashi's Avatar
    Join Date
    May 2007
    Location
    Johannesburg, South Africa
    Posts
    1,197
    Thanks
    12
    Thanked 188 Times in 136 Posts
    Quote Originally Posted by Justloadit View Post
    By not earthing the PV panels, simply the wind on a hot dry day, will build up static in the frame, and due to the capacitance effect of two conducting materials with a dielectric, which is the aluminium frame, and silicon cells the glass and backing being the dielectric, the cells will charge up and at some point will need to discharge themselves into something, either equipment in which the insulation breaks down, or a human who may touch the equipment.

    Anyone who has done ham radio or has placed wire high up to catch the radio waves will have experienced the static generated in the wires to earth, and this is increased when a storm starts building up.

    If the panels are not earthed, and lightning strikes the frame, due to the capacitive nature of the PV panel make up, well the energy is going to go somewhere, and what ever is connected to the PV panels will be toast, and if a human is near the vicinity of the equipment, may or may not survive, because the arc is going to jump.

    By earthing the panels, the energy will be directed to earth, as this will be the path of least resistance.

    The question should rather be
    "So are you prepared to take the risk of not earthing?"
    It leaves you with quite a tingling feeling and sweating a bit
    Get superfast South African Hosting at WebHostingZone

  3. #33
    Junior Member
    Join Date
    Oct 2018
    Location
    Cape Town
    Posts
    24
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Quote Originally Posted by SilverNodashi View Post
    It leaves you with quite a tingling feeling and sweating a bit
    And so we meet here too. :-)

  4. #34
    Junior Member
    Join Date
    Oct 2018
    Location
    Cape Town
    Posts
    24
    Thanks
    0
    Thanked 0 Times in 0 Posts
    So I now have the panels earthed, installed a inverter that is on the CoCT list, have a CoC in hand with the required Engineering report in.

    Now CoCT has an issue with the inverter being a hybrid, requiring a suitably acceptable disconnect switch ... grid tie se dinges.

    New regs apparently in draft form, hopefully resolving this caveat.

  5. #35
    New Member
    Join Date
    Sep 2017
    Location
    paarl
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts
    a single phase tester can issue a coc for a PV sytem provided that the inverter is single phase and he should have some relevant experience. Annexure M is an only informative guide and not a normative guide hence cannot be enforced in a way that some that an IE or MIE interprets it

Page 4 of 4 FirstFirst ... 234

Similar Threads

  1. Dc Installation
    By Pieter01 in forum Electrical Contracting Industry Forum
    Replies: 1
    Last Post: 17-Feb-18, 10:53 AM
  2. [Question] Installation
    By mudaunn in forum Electrical Contracting Industry Forum
    Replies: 1
    Last Post: 07-Oct-16, 01:55 PM
  3. Method of Installation
    By Reginald in forum Electrical Contracting Industry Forum
    Replies: 0
    Last Post: 30-Jun-14, 01:58 AM
  4. new installation
    By murdock in forum Electrical Contracting Industry Forum
    Replies: 6
    Last Post: 18-Feb-10, 01:34 PM

Did you like this article? Share it with your favourite social network.

Did you like this article? Share it with your favourite social network.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •