\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{kennynewin}
\pdfinfo{
  /Title (ram.pdf)
  /Creator (Cheatography)
  /Author (kennynewin)
  /Subject (RAM Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{0593FF}
\definecolor{LightBackground}{HTML}{EFF8FF}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{RAM Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{kennynewin} via \textcolor{DarkBackground}{\uline{cheatography.com/179901/cs/37430/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}kennynewin \\
  \uline{cheatography.com/kennynewin} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 7th March, 2023.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Equipment - Electrical}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Switch}} & An electrical component that breaks or closes an electric circuit. \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
{\bf{Circuit \{\{nl\}\}Breaker}} & Protects an electrical circuit from \{\{nl\}\}overcurrent/overload using switches. \tn 
% Row Count 8 (+ 4)
% Row 2
\SetRowColor{LightBackground}
{\bf{ACB}} & AC Breaker \tn 
% Row Count 9 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{\{\{nobreak\}\}Transformer}} & A device used to either increase (step up) or decrease (stepdown) voltage. \tn 
% Row Count 13 (+ 4)
% Row 4
\SetRowColor{LightBackground}
{\bf{Current\{\{nl\}\} \{\{nobreak\}\}Transformers}} & Converts primary current into secondary current. \tn 
% Row Count 16 (+ 3)
% Row 5
\SetRowColor{white}
{\bf{SST}} & Station service transformer -a transfomer that steps down the voltage to be used by customer. \tn 
% Row Count 21 (+ 5)
% Row 6
\SetRowColor{LightBackground}
{\bf{ACP}} & AC Panel - A circuit breaker panel that is a main distribution point for electrical circuits. \tn 
% Row Count 26 (+ 5)
% Row 7
\SetRowColor{white}
{\bf{Fuse}} & A device that protects electrical circuit from overcurrent using metal wire that melts when too much current flows. \tn 
% Row Count 32 (+ 6)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Equipment - Electrical (cont)}}  \tn
% Row 8
\SetRowColor{LightBackground}
{\bf{VFI}} & Motor Interrupted Fault Interrupter - Cuts off power if a person recieves a shock. \tn 
% Row Count 5 (+ 5)
% Row 9
\SetRowColor{white}
{\bf{Conduit}} & A tube or trough that protects electrical wiring. \tn 
% Row Count 8 (+ 3)
% Row 10
\SetRowColor{LightBackground}
{\bf{HPC}} & High Power Charging. \tn 
% Row Count 9 (+ 1)
% Row 11
\SetRowColor{white}
{\bf{Fused Disconnect}} & The combination between of a switch to disconnect the circuit and a fuse to shut the circuit off. \tn 
% Row Count 14 (+ 5)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.32 cm} x{5.68 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Equipment - Telecommunications}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{FPP}} & Fibre-optic Patch Panel - an interface panel that connect multiple optical fiber cables and optical equipment. \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
{\bf{CT Enclosure}} & Enclosures in which current transformers are mounted in. They are used to prevent electrocution. \tn 
% Row Count 8 (+ 4)
% Row 2
\SetRowColor{LightBackground}
{\bf{E-House}} & Pre-fabricated substations used to operate the industrial site they are installed on. \tn 
% Row Count 12 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.28 cm} x{4.72 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Equipment - Solar}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{PV Module}} & Photovoltaic modules captures solar energy to transform into sustainable energy. \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
{\bf{Inverter}} & A device that converts DC to AC. \tn 
% Row Count 6 (+ 2)
% Row 2
\SetRowColor{LightBackground}
{\bf{Central Inverter}} & Centralizes the power that is produced by the plant, each power block will have on central inverter. \tn 
% Row Count 11 (+ 5)
% Row 3
\SetRowColor{white}
{\bf{String Inverter}} & An inverter for smaller sections of the array. \tn 
% Row Count 13 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{\{\{nobreak\}\}Microinverter}} & Similar to the string inverter however they are installed beneath each solar panel. \tn 
% Row Count 17 (+ 4)
% Row 5
\SetRowColor{white}
{\bf{Combiner Box}} & Brings the output of several solar strings together. \tn 
% Row Count 20 (+ 3)
% Row 6
\SetRowColor{LightBackground}
{\bf{DCD}} & DC Disconnect - A switch that completes or interrupts the flow of DC electricity. \tn 
% Row Count 24 (+ 4)
% Row 7
\SetRowColor{white}
{\bf{Power Optimizer}} & A DC-DC converter that takes DC power and converts it to a different voltage and current optimal for the inverter. \tn 
% Row Count 29 (+ 5)
% Row 8
\SetRowColor{LightBackground}
{\bf{By-Pass Diode}} & Wires that provide an alternate current when a solar panel is shaded or faulty. \tn 
% Row Count 33 (+ 4)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{3.28 cm} x{4.72 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Equipment - Solar (cont)}}  \tn
% Row 9
\SetRowColor{LightBackground}
{\bf{String}} & A series of solar panels connected together. \tn 
% Row Count 2 (+ 2)
% Row 10
\SetRowColor{white}
{\bf{BESS}} & Battery energy storage system - an electrochemical device that charges from the grid or a power plant and discharges the energy when needed. \tn 
% Row Count 9 (+ 7)
% Row 11
\SetRowColor{LightBackground}
{\bf{P}} & Positive DC Cable. \tn 
% Row Count 10 (+ 1)
% Row 12
\SetRowColor{white}
{\bf{N}} & Negative DC Cable. \tn 
% Row Count 11 (+ 1)
% Row 13
\SetRowColor{LightBackground}
{\bf{DC Homeruns}} & Strings that run from the combiner box to the inverter. \tn 
% Row Count 14 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}