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Understanding the 75°C vs 90°C column in Ampacity Table. . . 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 reach 75°C at 135A and 90°C at 150A The wire insulation is good for 90°C, so for sizing the wire, we can use the
GFCI required for EV charging receptacle m - Electrician Talk NEC 2017 625 54 Ground-Fault Circuit-Interrupter Protection for Personnel All single-phase receptacles installed for the connection of electric vehicle charging that are rated 150 volts to ground or less, and 50 amperes or less shall have ground-fault circuit-interrupter protection for personnel
Branch Circuits - Electrician Talk 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 branch circuit as “the conductors between the branch-circuit final overcurrent device protecting the circuit and the outlets” (such as receptacles or lights) [Article 100]
EMT Fittings for Damp Locations. - Electrician Talk 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 structures shall be arranged to drain and shall be listed or approved for use in wet locations ENHANCED CONTENT If raceways are exposed to weather or temperature changes, condensation is likely to occur, causing
Table 300. 5 interpretation - Electrician Talk 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 conduit) If it's buried in a trench below 2" of concrete or equivalent, but also goes under a parking area in a
210. 8 (F) Outdoor Sauna 2023NEC - Electrician Talk I am mainly looking for opinions here I feel best leaving GFCI protection installed however in the eyes of the NEC would 210 8 (F) apply since the “outlet” is the heater which is located INSIDE of the structure?
High bays hanging from rigid conduit - Electrician Talk 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 conditions
PowerPoint Presentation 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 appliance for baking , roasting, etc A cooktop is just the burners without the oven
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 a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads