Simple Question?

It is always good to have a Volt meter that measures voltage applied to the block, and an amp meter which tells you how much current is being used in each block.  There are several topics in the electrical forum that you can search to get more details.  G

AC Panel meters. Analog or Digital. Inexpensive 2 to 2-1/2% accuracy meters give a good indication. About $10 each for VAC and  AAC analog meters from Light Object or try Shurite, Simpson and others for slightly more expensive units.

AAC [Amp] meters are wired in-line or in series and VAC[Volt] meters across-the-line or parallel. One each for each power district/block.

Fuzzy photo below of long ago meter set-up recording action for 3 pw ZWs powering 5 districts/tracks/blocks.White conductor is Common Return, colors are Hot conductors: A-D, A-D and A on ZWs. 

Okay, I think I have a basic understanding.  I think I will order one of each before I order for all 4 blocks to make sure I kow what Im doing.  Thanks for the replies.

Backside of 3 District Meter setup[using pw ZW for this example].

Ammeters on bottom row, Voltmeters on top. Note that the colored: green, red, black Hot conductors connect directly to the Ammeters from the transformer A,D,etc,posts and return out to the center rails or distribution strips if applicable---in-line, in-series. Then a colored Hot "jumper" is connected from each Ammeter to power each Voltmeter for that District. 

Ammeters must have same heavy conductors[#12,#14] as the "Bus" or main feeders for railpower since they conduct the entire railpower load for a District.. Voltmeters can use lighter wiring since they are across-the-line.

The Common[white] extends from the "U" post of the transformer directly to the Voltmeter and then "jumpers" between them to provide an across-the-line [parallel]connection for each VAC meter.

Need a 2" hole saw for mounting.

Thanks for the diagram. I have one of each on order from Light Object.  With those I will help my learning curve. Once I get that one going Ill get a second and so on.  I have found with Legacy that baby steps are necessary especially when trying to run everything in conventional mode with all the TCPs and BPCs.  Your pics have greatly simplified this for me and I am greatly appreciative.

Here's a simple wiring diagram for volt and amp meters...

The AMP METER is said to be in "SERIES" with the track.

The VOLT METER is said to be in "PARALLEL" with the track.

I think Im getting this.  If I just want to do one block initially with one amp meter and one volt meter, then  using the above picture with the coded wires, green one for example, I would wire from the A power source to one post of the amp meter and then from the second post to the track.  I then have another green wire going to the appropriate post on the volt meter.  Then I have a white wire from the U power source going to the appropriate post on the volt meter and then from that same post to the track.  This sound right?