A sign on the grounds of the Kent Ridge Campus of the <a href="https://en.wikipedia.org/wiki/National_University_of_Singapore" class="extiw" title="w:National University of Singapore">National University of Singapore</a> warning that 230,000-volt cables lie underground.
<a href="//commons.wikimedia.org/wiki/User:Jacklee" title="User:Jacklee">Jacklee</a>.
<span class="int-own-work" lang="en">Own work</span>.