leaDCalc vs Paper2Audio

Application based on the Western Electric Co. Inc, Bell Laboratories, Bell System DC Power Lead Calculator which is in a circular slide rule format.   Using allowable voltage drops specifically designed for telephone company central office direct current power plants and distribution wiring. The application references 48 volt battery systems but also works for other direct current voltages such as 24 volt. When using for 24 volts or other, choose by the required loop voltage drop instead of the specific section of the circuit. Notes: 51. Voltage drop and wire size calculations are based on 2.00 volt LOOP drop from the power plant battery to the load equipment and return. 1.75 Final Volts Per Cell or 40 volts min. operating volts at the equipment for nominal 48V systems.
 (40 + 2 = 42 / 24 = 1.75fvpc) 

 52. LOOP length is used in the calculations, often the battery and returns are unequal length. The result VD is shown as ONE WAY.

 53. The formula used in the lead size calculations is:
CM = LoopLength * 11.1 * Fuse or Breaker @ 100% / VD
(T-Mobile does use 80% of the input breaker or fuse size to calculate DC power wires)
CM = LoopLength * 11.1 * Fuse or Breaker @ 80% / VD
For example the Bell System might use the leaDCalc recommended 66% of the input breaker or fuse size to calculate DC power wires. The Bell System terms Peak and Busy Hour are antiquated electro-mechanical switch central office terms so leaDCalc recommends using 66% of the input fuse or breaker size, ie. 600A fuse or breaker calculate using 400 amperes and which is exactly as was done at Western Electric Co., Inc. for Bell System Telephone offices. 54. BDFB is a Battery Distributing Fuse Board. Fuse Panel is rack mounted at or near the load equipment. Load Equipment is the actual device requiring power. 

 55. This application is intended for informational use. Based on the original Bell System Lead Calculator, Western Electric Co., Inc. Model GS-5420, 4-66.

 56. "leaDCalc" is NOT affiliated with any person or company or anything else anywhere. No how, no way. 
Especially NOT T-Mobile nor the Bell System or even Western Electric Co. Inc., all of whom are mentioned. 
This application is meant as a guide only in determining the size and or capacities of power wiring used in direct current (DC), charging and storage battery telephone systems. 
This application is NOT intended to decide what type of wire, (or if you should even use wire or busbars in your DC systems), no how, no way and it is not for use with alternating current (AC) systems.

Paper2Audio is a free text to audio app that reads aloud your PDFs, ebooks, web articles, text documents, and plain text, turning complex reading into clear audio you can listen to anywhere. Paper2Audio’s text to speech (TTS) reader technology intelligently skips clutter like page numbers, footnotes, citations, and more. It summarizes figures, tables, and math so you can focus on what matters. Convert your documents and pdfs to audio to turn your commute, workout, or chores into productive learning time by listening to your documents hands-free. Over 700,000 documents converted to audio! Key features: • Read PDFs, webpages, EPUBs, .docx, .txt, scanned documents and copy-pasted text Turn your ebooks into audiobooks and your pdfs to audio to read text out loud • High quality text to speech voices Enjoy natural text to voice with engaging and realistic voices that make hours of listening engaging and easy to follow, including for people with visual impairments or learning challenges like dyslexia or ADHD. • Reads documents aloud with summaries of visual elements Summarizes equations, code, tables and figures in plain language instead of confusing symbol-by-symbol narration • A smarter audio text reader that cuts junk text you don't want to hear (page numbers, references list, ads, etc.) Our text reader skips the clutter and focuses only on the meaningful content • Read along with the audio with Reader View Reformats your documents for easier readability on small screens and shows images, math, formatting, and word-level highlighting in sync with the audio. • Highlighting and notes Keep track of key text with highlights and add your own notes • Familiar UI similar to a podcast or audiobook app Jump right in with an intuitive interface you already know how to use • Table of contents to select a section of your PDF or ebook Navigate instantly to any section that interests you most without endless scrolling • Read text aloud at your own speed with playback speed control from 0.5x to 4.0x in 0.05x increments Find your perfect listening pace whether you're a speed listener or prefer to savor every detail • Scan and read documents aloud Upload scanned PDFs to turn them into listenable audio. • Screen reader compatible and dyslexia-friendly fonts Pricing: Paper2Audio is a free text to audio document reader (up to 56 hours of audio generation per week) with no ads or annoying stuff. Paper2Audio Plus, our paid tier for business users, has higher limits and allows for audio file exports. Terms of use: https://www.paper2audio.com/terms-of-use Privacy: https://www.paper2audio.com/privacy