Reference tables
NEC reference tables
The tables electricians look up every day, rendered from the same verified dataset that powers the JobVolt app and its free calculators. Every page names its basis conditions and cites the exact code section, so you know what the numbers assume before you use them.
- Table 310.16
Table 310.16 Ampacity Chart
Copper and aluminum, 60°C to 90°COpen - Ch. 9 Tables 1, 4, 5
Conduit Fill Chart
Raceway areas and max THHN in EMTOpen - 314.16
Box Fill Table 314.16
Volume allowances and standard boxesOpen - Table 250.66
Table 250.66 GEC Sizing
Grounding electrode conductorOpen - Table 250.122
Table 250.122 EGC Sizing
Equipment grounding conductorOpen - Tables 430.248, 430.250
Motor Full-Load Current Tables
Single-phase and three-phase FLCOpen - Ch. 9 Table 8
Circular Mils by Wire Size
Chapter 9 Table 8 conductor areasOpen
Leave the code book in the truck.
In the app, every result links straight to its NEC table with your row highlighted. Offline, on the ladder, with the derivation one tap away.
