Text Formatting ⇒ Hyphentation for T8-1

[pucutuxa]

Hi,
I am writing my Bachelorthesis and I have to write T8-1 till T8-4 many times. I want that it is no hyphenation in it.

Code: Select all

\hyphentation{T8-1}
\hyphentation{T8\-1}
\hyphentation{T8"~1}

All of that says "Not a letter!"
How do I change that?

[Bartman]

The command \hyphenation has only one t and doesn't take numbers.

Code: Select all

\documentclass{article}
\usepackage[ngerman,english]{babel}
\usepackage{parskip}

% Enables the use of ngermans language shorthands 
% in a document with english as the main language.
\useshorthands{"}
\addto\extrasenglish{\languageshorthands{ngerman}}
     
\begin{document}
\hsize=5mm
\mbox{T8-1}\par
T8"~1\par
T8-1
\end{document}