Certified Data Centre Professional (CDCP) Practice Exam

Braided copper wire is commonly used for ground wires in a data center due to its excellent electrical conductivity and corrosion resistance. Copper provides a reliable connection that helps to ensure safety by preventing electrical faults. Grounding is crucial in data centers because it helps mitigate the risk of electrical shock and damage to sensitive electronic equipment.

The use of braided copper wire enhances flexibility and durability, making it easier to install and adapt in various environments found within data centers. Furthermore, a braided configuration can offer additional surface area, which can be beneficial in certain grounding applications.

While other materials such as aluminum and steel are used in various types of wiring and structural applications, they do not offer the same level of conductivity or reliability as copper. Aluminum, for instance, is less conductive than copper for the same cross-sectional area and can undergo oxidation, impacting its performance in grounding applications. Steel wire can be less effective in conducting electricity and is often not used for grounding due to its susceptibility to rust and corrosion which can compromise safety. Plastic coated wire is inappropriate for grounding as it does not provide the necessary electrical connection needed for safety. Thus, braided copper wire stands out as the optimal choice for grounding in data centers.