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Stop searching the NEC.
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Any electrical question — answered with the NEC article in your hand. Photo a panel, ask if it'll pass. Photo a J‑box, find the violation. Diagnose a circuit that won't stop tripping. Pre‑inspect your own rough before the AHJ pulls up. Seconds, not pages.

Ask it anything →Why's this 20A keep tripping?GFCI required at this island?Will this panel pass?Conduit fill — 12 #10 THHNMotor branch — 10HP 208V
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NEC '20 + '23State amendments tracked
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NEC 2023
What wire size for a 20A circuit at 100 ft on 75°C THHN copper?
⚡ ELECTRICAI · FIELD ANSWER
#12AWG
THHN Copper · 20A · 100 ft
VDROP2.93%
CEILING3.00%
NEC 210.19(A)(1)
Branch‑circuit conductors — sized at 125% of continuous load.
What if I bump to 30A?
Step up to #10 AWG. Voltage drop drops to 1.84%. Breaker stays 30A.
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The day you stop
guessing in the field.

Ask any question. Snap any photo. Run any calc. Every code answer comes back with the NEC article — no hunting, no flipping, no callbacks. Once it's in your pocket, you don't go back.

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The old way

Thumbing 1,000 pages on the truck floor.

  • ×Guessing the article at the panel. Fingers crossed.
  • ×Calling the shop. Waiting on a callback that never comes.
  • ×Estimating material from memory. Eating the difference.
  • ×Hoping the inspector's having a good day.
Red tag. Neutral bonded to ground at the sub — pull it before the re‑inspect.
The way it is

Cited. Calculated. Trimmed out before noon.

  • Plain‑English answer — with the NEC article right there.
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  • Parts list on the phone when you walk into the counter.
Compliant. Sub bonded per NEC 250.32(B). Walk it green.
NEC 310.16 · Ampacities of insulated conductors rated up to 2000V.
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I stopped carrying the codebook. The article comes with the answer — that's the part nobody else gets right. Apprentices use it. So do I.

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Never search the NEC again.
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Every electrical question. The article in your hand. The math on your screen. The photo flagged before the AHJ walks. Try it on the next thing that stumps you — you won't go back.