first ever board and 17th to boot

[rebuke]

Sorry to resurrect an old thread, but aptsys (or anybody else) do you have any details or whatever on the current transformer described - I'd like to do something similar to log power usage, but the best I've been able to find so far is an RS232 clamp meter, which would look ugly...

Thanks in advance...

 

[hairyben]

Here's mine shortly before connection. Again, 16th edition but as neat as I could get it with all those circuits in it. I've included the aerial distro board aswell.

Heartbreaking to think it may have to be upgraded with RCBO's sooner or later, and they're evan more work to keep neat.

Why haven't crabtree or square D or another with plug-in mcb busbars not brought out a triple rail LNE busbar? would be much easier and neater without all the N tails and earth leads flapping about. The units could easily be backwards compatible with existing mcb range, and if the RCBO's had removable neutral prongs or a plug-in-tail kit they'd be backwards compatible for fitting in old units too, so essentially still one range.

 

[Click-Sure]

http://www.elcomponent.co.uk/

Give this lot a go, advertised in the back of PE every month.

 

[aptsys]

I used a hall effect current transformer made by LEM - It was a current output device, so the output was fed into a transimpedance amplifier to be processed by the microcontroller. A resistive divider was used for voltage measurements allowing power factor etc to be worked out also. I had that current transformer laying about from a previous project, so it wasn't selected for this application - I think it's a 300A device.

Indeed it is a shame that it may get messed up when changing for RCBOs.