EU Flow Terminal

I saw someone making a EU Detector in the Inworld,
he had some sings which said how much EU was flowing through the cable and lamps above them,
and if the lamp was active the amount of EU was flowing though it.
He made also a check with the EU Reader and it was almost the same amount as on the sign (+-2-5 EU)

The question:
Does anybody has the idea how he could made that ?
He used at that time IC2 for MC 1.0-1.1 and it worked with 1.2.5
Also he said he only used for EU flow detection Vanilla IC2.

Another Question:

Is that possible with IC2 Exp today also?

Not as Exactly as that but like that ^^" Inworld flow detector that does not need any player to run

Ok i am fair now:
I know how it works. Its really simple.

You simply need EU detector cables and Transformers thats it. And also other cables for the empty spaces

But the question is: is that still possible with IC2 Exp since the Energy net did change?

If you want to see an example: VideoLink

XD Greg you maybe know how it works because its the same way done as in the real world xD