MI Cable Impedance Values

[cyriousn]

Hey everyone. I was looking at Pyrotenax MI cables earlier today and it appears that they offer an online voltage drop calculator on their website. It requires a quick signup to use. What I ended up doing was taking their online voltage drop calculator and back calculating the impedance of a few of their conductor sizes so that I could use them in the future for a spreadsheet. When Pyrotenax was under the umbrella Pentair and Tyco, they used to publish their "voltage drop factors" which appear to be close to the impedance * sqrt(3). Anyone know if this data exists somewhere else on the internet?

 

[7anoter4]

https://www.yumpu.com/en/document/v...ltage-drop-calculations-tyco-thermal-controls

BS 7671 Tab.4G1B