Test your skills boys

[99yam40]

Yes electricity is interesting stuff and can be confusing unless you have the proper knowledge/ schooling.

reading High voltage AC current is normally read with CTs(current transformers).
I guess it depends on what we each call high voltage.
here in the states 480 volt, 2300V, 15kv and 138KV 3 phase AC switch gear contain CTs to meter current so it can be used to monitor the loads.

We used clamp on meters on 480 and 2300 to help in trouble shooting some times but metering for protection or to display current was done with CTs
now when you get into DC voltage systems and current then Halimar units and shunts came into play.

Someone needs to lead us to the articles in question. a link would be good

[zenoahphobic]

More confusing is bring names into it.
That Kirchoff doesn't even get his initial recognised. That Latin Italian fellow kilo seems to be more important.
Poor old Ohm has been confused with that Greek fella Omega.
Voltaire's initial is actually used equations.
Poor old Ampere is replaced by I who?.
Old Watt has his initial used but always has a battle with some powerful horse.....
All these fellas didn't invent anything at all; they did not write laws as a parliament would. They merely translated physic laws into mathematics.
Now Mathew was an inventor!!
Kirchoff I have forgotten completely because his law is simply the law conservation. Voltage and current simply do not drop, get consumed ; they are always accounted for.

[rodbolt17]

but still.
no one knows the published Yamaha data that is wrong.

[99yam40]

no one knows where to find it.

we asked for you to post a link to it, but that has not happened

highlight address, copy, and past if it does not need special permission for us to get to it.

If we cannot get to it, highlight, copy, and paste the wording to you post

[rodbolt17]

cause I don't have it online.
really don't know how too.
I don't have a scanner to scan and paste it.

but the data is wrong on two of the articles.

[99yam40]

well that sucks.

maybe Boscoe can put something up for us to look at

[boscoe99]

well that sucks.

maybe Boscoe can put something up for us to look at

Waiting to hear what the two articles are.

[boscoe99]

well that sucks.

maybe Boscoe can put something up for us to look at

I am waiting for someone to say what should be posted. I am not a mind reader.

[boscoe99]

For some reason I cannot reply to this post.

If this goes thru I need the two articles.

[rodbolt17]

if I post it it defeats the purpse.

but the march 2016 rag mag has two articles that are simply wrong.

[seahorse5]

For quite a few years now CDI Electronics (formerly Rapair Inc.) has manufactured a shunt assembly tool for testing amperage - #511-9772 Amp-meter Adapter for Digital Meters

You use a DVM set to millivolts and read the display directly as amps. The shunt tool is designed to have a voltage drop of 0.001 for one amp.

1 millivolt (0.001volt) DC =1 amp
20 millivolts (0.020volts) = 20 amps
200 millivolts (0.200 volts) = 200 amps.

It is very easy to use, just connect one end to the neg. battery terminal and the other to the negative cable. The wire will stand up to cranking amperage to get the motor started. By reading the meter is easy to see the starter cranking amperage draw and then the charging output once the motor is running. It is a quick and relatively inexpensive way to accurately test current draw and charging amps of an engine.

Many years earlier I made a similar type of tool using 8 gauge wire and soldered ring terminals of a certain length and 16 ga. wires to connect to a sensitive voltmeter.

Links to the CDI tool

#511-9772 Amp-meter Adapter for Digital Meters

CDI Amp Meter Adapter: 511-9772

http://www.cdielectronics.com/wp-con...S-511-9772.pdf