The IET is carrying out some important updates between 17-30 April and all of our websites will be view only. For more information, read this Announcement

Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 6 replies
  • Subscribers 37 subscribers
  • Views 10280 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Solar Array - Grounding

vantech

Hi,

Do solar arrays (the frames) need grounding? The inverters in most cases are DC (and isolated from mains) and indeed micro-inverters are class 2 with isolated DC inputs from the array. 

I think if the installation has a TN-C-S earthing system, connecting the roof frame to ground would potentially cause an issue if there was a PEN fault. 

I haven’t seen any solar installations with dedicated earth spikes, so can only assume they are left ungrounded, or (perhaps naively) connected to a PME earthing system. 

Thanks. 

Parents
  • 0

    What would you ground them to? I was looking at a set up at Elex and it would seem that brackets are squeezed between the rows of tiles and screwed to the rafters. In other words, the arrays are electrically isolated from everything else.

    Quite what you would do with my garage, which has a corrugated steel roof, is another matter entirely.

Reply
  • 0

    What would you ground them to? I was looking at a set up at Elex and it would seem that brackets are squeezed between the rows of tiles and screwed to the rafters. In other words, the arrays are electrically isolated from everything else.

    Quite what you would do with my garage, which has a corrugated steel roof, is another matter entirely.

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines