Technical FAQs

Ask a Question

What are the SPDs (Surge Protection Devices) recommended pole configurations that could be used in TN-S and TN-C systems?

  1. 1P/2P/3P/4P devices for TN-C system, with PEN connected on the top and PE on the bottom (refer to figure1 in diagram.png) 
  2. 1P+N/3P+N devices for TN-S system, with Neutral connected on the top and PE on the bottom (refer to figure2 in diagram.png) 
Was this helpful?
What can we do to improve the information ?