vault backup: 2025-11-12 16:49:17

twisted-pair-cable.md

@@ -0,0 +1,35 @@
+---
+id:
+aliases: []
+tags: []
+title: Twisted-Pair Cable
+---
+# Twisted Pair Cable
+
+## Scope
+
+This note concerns [twisted pair cabling](https://en.wikipedia.org/wiki/Twisted_pair),
+but only as relevant to electrical estimating.
+
+Unless noted otherwise,
+_twisted pair cable_ as used in this note refers to
+4-pair Category 5 and Category 6 cable constructions.
+
+It should be noted for accuracy
+that the standards for Category 5 and Category 6
+do not exclude cables of more than 4 pairs.
+
+## Construction
+
+| Name   | Bandwidth |
+| ------ | --------- |
+| Cat 5  | 100 MHz   |
+| Cat 5e | 100 MHz   |
+| Cat 6  | 250 MHz   |
+| Cat 6A | 500 MHz   |
+
+## Connectors
+
+8 position 8 contact (8P8C) modular connectors
+male --- "plug"
+female --- "jack" or "socket"