% Author: Prof. Dr. Matthias Jung
% Year: 2023
\begin{tikzpicture}
    \tikzset{
        buffer/.style={
            draw,
            very thick,
            shape border rotate=0,
            regular polygon,
            regular polygon sides=3,
            fill=DARCred,
            minimum height=4em,
            rounded corners = 4pt
        }
    }
    \draw[DARCred](0,0) node[ground, color=DARCred](gnd){};
    \draw(gnd) -- ++(-2,0);
    \draw[DARCred](gnd) to [short, i<={~}, color=DARCred] ++( 2,0) coordinate(b1);
    \draw(b1) -- ++(1,0) coordinate(b2) -- ++(1,0) to [short, -o] ++(0.5,0) coordinate(gnd2);
    \draw[thick, DARCred](b1) to [short, i<={~}, color=DARCred] ++(0.5,1) coordinate(geschlechtsteil);
    \draw[thick](b2) -- (geschlechtsteil);
    \draw[thick, DARCred](geschlechtsteil) to [short, i<={~}, color=DARCred] ++(0,1) coordinate(hals);
    \draw[thick, DARCred](hals) to [short, i<={\qty{120}{\milli\ampere}}, color=DARCred] ++( 0.5,-1) coordinate(h1);
    \draw[thick](hals) -- ++(-0.5,-1) coordinate(h2);
    \draw[thick](hals) to [open] ++(0,0.5) circle (0.5);
    \draw[thick](hals) to [open] ++(0,0.25) arc (90:55:0.45);
    \draw[thick](hals) to [open] ++(0,0.25) arc (90:125:0.45);
    \draw[thick](hals) to [open, -*] ++(-0.2,0.65);
    \draw[thick](hals) to [open, -*] ++(+0.2,0.65);
    \draw(h1) to [short, *-o] ++(1.5,0) coordinate(end);
    \draw(end) to [open, v={~}, name={h1}, voltage=straight] (gnd2);
    \draw(h1.center) node[left](){\textdirectcurrent\,\qty{120}{V}};
    \draw(h2) node[anchor=east](){$\sim\qty{1}{\kilo\ohm}$};
    \draw(gnd) ++(0,2.5) node[buffer](sign){};
    \draw(sign) node[](){\textbf{!}};
    \draw[DARCred](sign.south) node[anchor=north](){Lebensgefahr};
\end{tikzpicture}