<a href="//commons.wikimedia.org/wiki/Motor_control_centre" title="Motor control centre">Motor control centre</a> (MCC) Room in Unit 2, Point Tupper, <a href="//commons.wikimedia.org/wiki/Nova_Scotia" class="mw-redirect" title="Nova Scotia">Nova Scotia</a>, <a href="//commons.wikimedia.org/wiki/Canada" title="Canada">Canada</a>. Typically, these cabinets have holes underneath, going through the concrete floor, which match the footprint of the cabinets. These openings must be <a href="//commons.wikimedia.org/wiki/Firestop" title="Firestop">firestopped</a>. <a href="//commons.wikimedia.org/w/index.php?title=Cable&amp;action=edit&amp;redlink=1" class="new" title="Cable (page does not exist)">Cable</a> changes must be accompanied by approved repair procedures to make sure the firestops maintain their fire-resistance ratings.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>