I think for now I will not have any meters, just get it built. I do like the look of those, however. Was it your RPC build thread with a air compressor motor that used those?If you want to use panel meters, I bought these for my RPC. Seem to work well and are quite accurate, they agree with my Fluke meters.
https://www.ebay.com/itm/100A-AC-LC...9:g:pDEAAOSwldRaAvwb:rk:2:pf:1&frcectupt=true
Yes, they appear to have 4 resistors in them, wired in series. And I don't plan on using them right now, they may end up on eBay to offset the cost of the box I am using in my build.The things you identify as a multiplier is likely a voltage divider generally comprised of resistors. You can use the existing meters if you know the resistance of the meters, current is usually given at full scale and labeled on the meter, in which case all you need to do is build a new divider network, however, your meter scale at full deflection is labeled "500" I have seen folks write their own scale and past over the old scale, and adjust the divider network accordingly. But they always look a bit cheesy, and new meters are relatively cheap. Frankly, I would scrap the meters or give to someone who can use them, and proceed building your RPC without them.
I think for now I will not have any meters, just get it built. I do like the look of those, however. Was it your RPC build thread with a air compressor motor that used those?
Back in the late 90's I was contractor on a remodel job, there was a 14 gauge branch circuit I wanted to use for a ½ hp fan motor, The electrician said it couldn't be done, it had to be a minimum 12 gauge for more than a ¼ hp motor. We changed it. I even asked the inspector if it was necessary (just to keep sparky honest) he said yes. Perhaps the code changed since then but it seems prudent to use a slightly heavier gauge anyway.Just had a few minutes to check. 2017 NEC Article 240.4 (D) permits 14 AWG, so 14 AWG is correct. Also, 430.22 (G) explicitly permits 14 AWG. Do you have another cite in the NEC that says something else?
Yes, they appear to have 4 resistors in them, wired in series. And I don't plan on using them right now, they may end up on eBay to offset the cost of the box I am using in my build.