Are electrical cables generally thicker than optical cables

Electrical cables typically have a larger diameter because they contain metal conductors, usually copper or aluminum, which must be thick enough to carry current safely. Additionally, electrical cables require insulation layers to prevent short circuits and protect against electromagnetic interference, further increasing their overall thickness . In contrast, optical cables use glass or plastic fibers to transmit light, which are extremely thin—often only 125 micrometers in diameter for the fiber itself, with a tight buffer around 900 micrometers . The outer jacket of an optical cable adds some thickness, but even then, most optical cables remain under 10 millimeters in diameter, much smaller than typical electrical cables of similar capacity . The difference in thickness also reflects their functional requirements. Electrical cables must handle high currents and voltage, which necessitates a substantial metal core and insulation. Optical cables, however, transmit data as light, which does not require a conductive metal core or heavy insulation, allowing them to be lighter, thinner, and more flexible . While thicker optical cables can exist to house multiple fibers or provide extra protection, they are still generally thinner than electrical cables designed for power transmission . In summary, electrical cables are usually thicker than optical cables because of the physical properties of metal conductors and the need for insulation, whereas optical cables achieve high data transmission in a much smaller, lighter form factor .