NEC and running multiple 3 Phase feeders in single conduit
Jan 9, 2025 · Does NEC allow running multiple 480V 3 Phase Power load conductors in a single conduit instead of running each 3 phase loads conductors in separate conduits?
Is there a Resistivity of Conductors (K) chart in the NEC?
Dec 15, 2024 · The K factor isn't specifically stated in the NEC, but wire sizes and their circular mils and resistance are. Using these, you can derive it from the tables in the NEC. For …
Understanding NEC 2020 and disconnects required - Electrician Talk
May 13, 2021 · Understanding NEC 2020 and disconnects required Jump to Latest 13K views 9 replies 4 participants last post by magicone2571 May 14, 2021 M
80% rule? - Electrician Talk
Apr 2, 2014 · 80% rule applies to continious loads such as motors, lighting or any load expected to be on 3 hours or more. A breaker is rated for 100% of the noncontinious load which may …
NEC Article about mixed voltages in conduit - Electrician Talk
Jul 8, 2017 · NEC Article about mixed voltages in conduit Jump to Latest 26K views 11 replies 8 participants last post by wildleg Jul 9, 2017 G
Gas station wiring requirements - Electrician Talk
Apr 13, 2023 · NEC 2017 514.8 Underground Wiring. ENHANCED CONTENT Fuel spilled in the vicinity of gasoline dispensers seeps into the ground and could migrate into underground …
NEC 250.122(B) - Upsizing for voltage drop - Electrician Talk
Jan 12, 2015 · NEC 250.122(B) requires that when I increase my current-carrying wire size to accommodate long distance voltage drops, that I must also upsize the ground wire …
Conduit separation NEC - Electrician Talk
May 14, 2014 · Is there a code requiring separation between underground data conduits and line voltage (120/208 or 277/480) conduits? I have never heard of one but everyone here in Cali …
Branch circuits The distinction between a branch circuit and a feeder can be a source of confusion for the Code user. The first step in eliminating this confusion is to understand that the NEC …
2008 Nec 300.4 (e) - Electrician Talk
Feb 29, 2008 · This is a new addition to the NEC for '08. When installing cable or conduit under a roof deck, it must be installed and supported 1 ½" from the decking. I just saw a perfect …