Ethernetkaapelia

Ethernetkaapelia is the Finnish term for an Ethernet cable, a copper twisted‑pair cable used to carry networking signals in local area networks. It connects devices such as computers, switches, routers, and access points via RJ-45 connectors. The cable’s performance depends on its category rating, with higher categories supporting greater data rates and improved noise immunity.

Most common are unshielded twisted pair (UTP) cables in categories such as Cat5e and Cat6, with shielded variants (STP) used in environments with higher electromagnetic interference. Modern categories include Cat6a, Cat7, and Cat8, each offering greater bandwidth and lower crosstalk. Cat5e supports up to 1 Gbit/s over 100 meters; Cat6 up to 10 Gbit/s for shorter runs; Cat6a up to 10 Gbit/s at 100 meters. Cat7 and Cat8 provide higher speeds over shorter distances and may employ stronger shielding. Copper Ethernet standards generally use 100-ohm twisted pair and RJ-45 connectors.

Standards are defined within the IEEE 802.3 family and corresponding cabling standards such as TIA/EIA-568. Ethernet cables are also used with Power over Ethernet (PoE) to deliver both data and electrical power over the same cable, enabling devices such as IP cameras and wireless access points.

Installation considerations include keeping runs within specified lengths, avoiding physical damage and excessive bending, and using appropriate shielding and grounding for shielded cables. For best performance, select the cable category that matches the required bandwidth and distance, and ensure proper terminations and compliance with relevant standards.