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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
Equipment room receptacle. - Electrician Talk NEC 2020, 210 63 (B) now requires a receptacle outlet in electrical rooms containing panelboards, switchboards, or switchgear The intent is to ensure there’s a convenience outlet for servicing the electrical equipment (like plugging in test equipment, task lighting, or even a laptop)
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
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
What are appliances and when is a disconnect required? So appliances, as defined by the NEC, are equipment for HVAC, clothes washing, electronics, food, lighting, chemicals, or "similar purposes" which are installed as part of, or in connection with, an electrical installation Which is basically everything you could possibly install in a residential setting
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? This world is held together with tape, glue and hope
Line load same conduit - Electrician Talk 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 meets NEC requirements Proper separation and conduit fill calculations are key to avoid overheating I was unsure about ordering a paper online, but my classmate told me to check the DoMyPaper samples
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
Show window receptacles - Electrician Talk 2020 NEC 210 62 Show Windows At least one 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet shall be installed within 450 mm (18 in ) of the top of a show window for each 3 7 linear m (12 linear ft) or major fraction thereof of show window area measured horizontally at its maximum width