Hi,
Maybe here is not a right place to ask this question, sorry about that!
I looking for some Circuit or Mechanism to routing active cable. so in this case my active cable remains always the same.
I want it for AC 16A with power factor 1 (3500Watt Max), Something like this:
Thanks a lot 
i'm not sure what you are asking.... what do you want to accomplish in the end? what is this for? Are you looking for the thing in the box? This is accomplished using an H bridge.
Qdeathstar:
i'm not sure what you are asking.... what do you want to accomplish in the end? what is this for? Are you looking for the thing in the box? This is accomplished using an H bridge.
I looking for some circuit, mechanism, some thing out of the box or similar to switch active cable automatically.
The goal is to make a Wattmeter using regular hardware available out there! so If planned to use a CT sensor active cable should remain always the same, this device must be removable too. so I should have some way to route live line to use the certain cable in any conditions!
what do you mean "active" cable? Above ground potential?
Qdeathstar:
what do you mean "active" cable? Above ground potential?
Sorry about that, I mean live line.
I believe image explain everything!!!
The image is completely ambiguous.
What is the input? What output do you want?
MarkT:
The image is completely ambiguous.What is the input? What output do you want?
It simple,
All I want to have + side always on certain cable! Even if + and - position are changed!
Let me explain it in this way,
I have two wires a red one and a black one.
I want in any conditions red one remains live cable.
Bridge rectifier? Or am I missing what you want?
You want a full wave bridge rectifier, but you will have an approximately 1.4 volt drop.
Just another x-y problem
I want it for AC 16A with power factor 1 (3500Watt Max)
The last time I checked, AC wires didn't have plus and minus symbols. Even more mysterious is why power factor gets a mention.
avr_fred:
Just another x-y problemThe last time I checked, AC wires didn't have plus and minus symbols. Even more mysterious is why power factor gets a mention.
And because of that I wrote Live wire!!!
DrAzzy:
Bridge rectifier? Or am I missing what you want?
outsider:
You want a full wave bridge rectifier, but you will have an approximately 1.4 volt drop.
Yep,
Thansk It seems this is what I looking for
Just one more question, The output remains AC or not?
Becasue I just want to make a wattmeter which is removable and can use with power plug! because of that I need to rout Live line always to the certain wire which sensor is connected.
Thanks a lot:)
You have really confused me! Your watt meter will not care which wire it is measuring. The power is identical in both wires.
Paul
Paul_KD7HB:
You have really confused me! Your watt meter will not care which wire it is measuring. The power is identical in both wires.Paul
Really?
sorry about dumb questions, Im very new to this 
I just seen some videos on YouTube all of them just tells CT sensor should set on Live wire! and if get negative results just turn the censor! (Of course I can change it in my code!).
So if is not important on which wire (Live or Neutral) should attach CT sensor, then my problem solved
Thank you
sonixax:
Really?
sorry about dumb questions, Im very new to thisI just seen some videos on YouTube all of them just tells CT sensor should set on Live wire! and if get negative results just turn the censor! (Of course I can change it in my code!).
So if is not important on which wire (Live or Neutral) should attach CT sensor, then my problem solved
Thank you
The tell you that because most power cables have at least 3 conductors. Some of our (USA) 220 volt power must have 4 conductors. Two for power, one for neutral and one for ground. You have to have the CT on ONE of the conductors supplying power to the device.
Paul
if you connect the ct to the neutral wire you probably won't get accurate results....
if you hook your ct up to the neutral you will get significantly lower readings because the two ungrounded conductors coming in to your building are out of phase with one another and cause degenerative interference on the ct.
If you are placing the ct past the mains breaker on a 120v circuit it doesnt matter which wire the ct is connected to, but the orientation is still important.
If you are using the ct on a 120/240v (4 wire) circuit you need to have two ct's since the load is not necessarily balanced.
Hi,
Can you post a diagram of your concept of your Wattmeter, label input and output and how you will measure voltage and current?
What is the load?
Can you please tell us your electronics, programming, Arduino, hardware experience?
Thanks.. Tom..
Paul_KD7HB:
The tell you that because most power cables have at least 3 conductors. Some of our (USA) 220 volt power must have 4 conductors. Two for power, one for neutral and one for ground. You have to have the CT on ONE of the conductors supplying power to the device.Paul
This means, I cannot have the CT on neutral conductor? right?
if so, How can I route or change power (Live) on the cable which ct is installed?
is it good Idea to have two CT on both cables? so if any cable supply power, I can use the CT on that cable?
You can have a ct on the nuetral wire, depending on the exact circuit in question. It will work on a 120v circuit, 277v circuit, and a 240 high-leg circuit. But, it will not work with a 480/208/240 circuit without at least one additional CT.