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Bosscat

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  1. Thanks sometimewoodworker. I am not at the property at the moment but I do recall that there are only four incoming wires. As you and Crossy suggest I will run with the 3P +N SPD. Better to be safe.
  2. The price shocked me also. I am OK Tomzn and ABB is also OK. I recall you mentioning the baby 5kA MOV's before and will also look into them. Could you make any sense of the grounding on the board pic and if it is MEN does that mean I can drop the +N and move to 3 Pole?
  3. Thanks for the suggestion Crosby. Attached is a pic of the main board and breaker box. You will note that the under/ over current device is currently disconnected. The Schneider 3P + N MPD has been quoted at Thb12k. iPRD65r modular surge arrester - 3P + N - 350V - with remote transfert https://www.se.com/ww/en/product/A9L65601/iprd65r-modular-surge-arrester---3p-%2B-n---350v---with-remote-transfert/
  4. Thanks for the response Crossy. I am fairly certain that MEN has been implemented and the electrician did instal a 2.4m ground rod to the CU. I will check this with him again but its difficult to communicate with him on technical matters (as many here have also experienced). However to be sure I will run with the 3 pole plus N and upsize to the 60/100kA unit as you advise. The panel is DIN rail and space exists. Thanks again.
  5. My 3 phase panel does not have a surge protection device and recently I had some damage to devices in the property. These were random items with chargers and pcbs and I put it down to nearby lightning. Its a remote property so I wasn't there at the time but everything failed at exactly the same moment. Now I would like to instal an SPD in the panel but I see there are two options - 1. without neutral 2. with neutral. I won't be installing this myself but If I can source the correct part (and not some cheap local undersized option) then maybe that gives my electrician a head start. Ideally I would like to stay with Schneider and see the following two options: 1. https://www.se.com/ng/en/product/A9L15597/ipf-k-20-modular-surge-arrester---3-poles---340v/ 2. https://www.se.com/th/en/product/A9L15693/ipf-k-20-modular-surge-arrester---3-poles-%2B-n---340v/ Can someone advise which option I need and what I should consider. Its the grounding options that are primarily confusing me (TNC and TT). There is a ground rod attached to the distribution board. Thanks
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