Id like to move the red wire for the kwh meter shown from before to after the coil. Your thoughts?

 

I see no difference other than you're measuring the current before the meter draws off any power. I doubt your meter draws very much power, so I don't think you're going to notice any change. If any, it would probably be very little difference.

 

You can also accomplish the same thing by pulling the black taped connection through the coil so that both red wires run through the coil as I explained in another forum where you crossed-posted the same message. I find this extremely annoying and rude as people waste their time duplicating effort

 

I gave my comment a little more thought. Sorry, I was incorrect.

With the connection point as shown, the current through the supply wire to the load will be measured.

If you push the connection through the coil, the supply wire with be carrying supply current + meter current. But current through the meter wire will be flowing in the opposite direction, so you'd only read the current to the load.

Sorry, my mistake.

 

I was going to ask WHY consider moving the connection. How much current to the load is anticipated. How much current does the measuring device require?
Certainly there will be a difference, will it be enough to detect? Willit be enough to measure??

 

Circuit has not yet been built. It will be much easier to build it per my modified plan. That is the only reason.

 

For a circuit using the size of wires shown in the picture, the effect is not known. The reason is that we have no information as to the anticipated load current to be measured, no information as to the current required by the measuring device, and no hint as to the required accuracy or the system resolution.
The caption states that the range is "0-100A", while the wire sizes do not appear to be adequate for even ten amps.

Based on the lack of information, it appears that taking the power feed from past the current transformer will probably not lead to any obvious errors.
If the metering circuit has available a zeroing adjustment, then the error introduced can be removed and the rated accuracy maintained.

 

Said it before, saying it again; it will make virtually no difference which side you put the red wire on.

 

It wil not make a MEASURABLE difference in the values read with that meter. Using a standard 5 or 6 digit multimeter the difference will be obvious, if the measurement is done correctly..

 

I see no difference other than you're measuring the current before the meter draws off any power. I doubt your meter draws very much power, so I don't think you're going to notice any change. If any, it would probably be very little difference.

#1

will it be enough to detect? Will it be enough to measure?

#2

it appears that taking the power feed from past the current transformer will probably not lead to any obvious errors.

#3

Said it before, saying it again; it will make virtually no difference which side you put the red wire on.

#4

It wil not make a MEASURABLE difference in the values read with that meter.

#5
Conclusion: Makes no real difference. At least none that will lead you to a false conclusion about how many amps are being drawn. (#6)

Does it really need to be said a seventh time?

 

Just 7. Im still hoping for double digits. Ah it's fun to see how many ppl say this how many times. Especially considering that it was not even my question.

 

The way to know what it will do is to connect the meter so that the operating current passes the sensor, and there is no other load. Then observe the reading. That reading will be the power consumed by the meter, answering the question accurately. Simple, easy, and cheap.

 

I see that you purchased the kWh meter I suggested (in an earlier post) – hopefully it will meet your needs.

As tonyr1048 says, if the current transformer is in the supply wiring before the meter, the current reading will include that drawn by the meter – but as he says, it will be a very small current. But since you want to know what your kiln is drawing, the current transformer should be located such that it does not include the power meter current.

By the way, the wiring in your photo looks like it would not pass 26A for very long.

 

..., answering the question accurately. Simple, easy, and cheap.

What question? Oh that question that i never asked.

 

Id like to move the red wire for the kwh meter shown from before to after the coil.

Especially considering that it was not even my question.

So you want to move the red wire without moving the red wire? OK, if that's your question - it can't be done.

What question? Oh that question that i never asked.

Well, there goes my answer. Shot down in my prime.

 

.... But since you want to know what your kiln is drawing...

Did I say that?

By the way, the wiring in your photo looks like it would not pass 26A for very long.

I agree. When I build mine, I'll use wire that is rated for 32.5a.

 

Yes you did, in an earlier thread.

// Hi all,i need a kwh meter to record power used on a 26a 240vac kiln.//

 

Are you serious about getting an answer? Or are you just needing attention?

Since nobody knows what it is you're asking - why not repeat your question in a clear and concise manor?

 

Id like to move the red wire for the kwh meter shown from before to after the coil. Your thoughts?

Circuit has not yet been built. It will be much easier to build it per my modified plan. That is the only reason.

 

I was just looking for confirmation that it would still work. I didn't see any reason why it wouldn't, but I don't know much about electronics and coils.

Every manufacturer that I found that made one of these coil kwh meters had a very similar wiring diagram. None wired it like i propose.