Understanding the 75°C vs 90°C column in Ampacity Table...
May 5, 2025 · The columns indicate how much amperage is required to raise the temperature of that size conductor to that column's temperature under standardized conditions. So a 2/0 XHHW will …
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 defines a …
EMT Fittings for Damp Locations. - Electrician Talk
Jan 4, 2025 · Here’s 2023 NEC Same wording. I included the Enhanced Content 225.22 Raceways on Exterior Surfaces of Buildings or Other Structures. Raceways on exteriors of buildings or other …
Ground rod horizontal in ditch - Electrician Talk
Feb 25, 2025 · Grounding in NEC has become a cruel joke. It’s like tge stupid 25 ohm maximum rule, OR just use 2 rods. Granted the Earth electrode isn’t as critical as they make it out to be, or they …
High bays hanging from rigid conduit - Electrician Talk
Dec 4, 2024 · My AI NEC assistant tells me this is permissable. Yes, the National Electrical Code (NEC) allows luminaires (light fixtures) to be supported by a chain from a rigid conduit under specific …
Line / load same conduit - Electrician Talk
Mar 2, 2025 · Is it against nec to run line and load in the same conduit to A fused 30 amp disconnect ? Running line and load in the same conduit is generally fine as long as it's rated for the ampacity and …
Continuous Load: what is "maximum current" | Electrician Talk
From the 2023 NEC. Article 100 Definition: Continuous Load: A load where the maximum current is expected to continue for 3 hours or more. 210.20(A) Continuous and Noncontinuous Loads. "Where …
Table 300.5 interpretation - Electrician Talk
Oct 16, 2023 · For a given column of Table 300.5 ("minimum cover requirements") there is a potential overlap of the various rows. The one that concerns me at present is Column 2 (IMC and RMC …
Smoke Detector Circuit - Electrician Talk
Sep 13, 2014 · I've been scouring through the NEC 2011. Can anyone post the section of the code that allows me to install residential smoke detectors on a shared circuit...
The NEC does not define ranges, ovens or cooktops but based on manufacturers usage a range is a unit that has a cooktop and oven built together in one appliance. An oven is just a single or double …