B) Plenum cables must be used for this project.
A plenum cable must be installed in each "air carrying" space. For example, most large office buildings use the ceiling to return air to the air conditioning system. This qualifies this ceiling as a plenum ceiling and all cables passing through this ceiling must be plenum rated.
Plenum cable /ˈplɛnəm/ is an electrical cable that is installed in the plenum space of a building. In the United States, plastics used in the construction of plenum wiring are regulated by the National Fire Protection Association's standard NFPA 90A: Standard for Installation of Air Conditioning and Ventilation Systems.
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Couldn’t type the whole thing so Hope this helps:)
The federal government dispatched units of the U.S. Army to Chicago to enforce orders from federal courts, and clashes with citizens broke out in the city streets in July 1894
Answer:
They go to open spaces to avoid getting crushed by falling objects like collapsing building and trees.
