jocopa Posted September 30 Share Posted September 30 Hi, my electrician was just trying to install the pro 3EMat my house in UK. However, they were a little confused by the instructions. 1. They need to know if we need the clamp for the neutral as it’s shown on the diagram and not in the box? 2. Also do we need a feed for each phase? I have 3 phase but being a residential property we have many single phase consumer units around the house not a 3phase board making individual feeds for each phase tricky. Thanks very much, Joe Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
Members thgoebel Posted September 30 Members Share Posted September 30 (edited) (1) No, you don’t need a current clamp for neutral wire. (2) Yes, all three phases must be connected to the terminals A to C. Otherwise, power measurement will be wrong. Be aware of the correct assignment of current clamps and voltage paths! Your electrician may double-check this with a simple measurement: This measurement has to be executed for phases A to C. Edited September 30 by thgoebel Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
jocopa Posted October 1 Author Share Posted October 1 Thanks very much for your reply. Very helpful. We want to measure the consumption across the whole property on the three phases. Unfortunately, we have single phase consumer units around the house instead of a single 3 phase board. Is it safe to take a feed from the main switch that isolates the whole installation as this is the only point in the cupboard that all phases are in the same enclosure? My electrician's concern is that the cable is not protected that is wired into LA, LB and LC on our monitor that will be mounted in its own stand alone enclosure. Thanks a lot, Joe 18 hours ago, thgoebel said: (1) No, you don’t need a current clamp for neutral wire. (2) Yes, all three phases must be connected to the terminals A to C. Otherwise, power measurement will be wrong. Be aware of the correct assignment of current clamps and voltage paths! Your electrician may double-check this with a simple measurement: This measurement has to be executed for phases A to C. Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
Members thgoebel Posted October 1 Members Share Posted October 1 Hard to imagine on the continent! 😇 Could you draw a little sketch for better understanding? Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
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