Sparky's Journal

📅 May 28, 2026

Missing the Lesson While Arguing the Terminology

One thing I’ve noticed in electrical mostly online is how fast people stop listening the second they hear a term they don’t personally like.

I recently made a post explaining the commonly used “80% rule” for continuous loads. Immediately, someone jumped in, saying:

“There is no 80% rule in the NEC.”

Now technically? Sure. The NEC does not literally contain the phrase “80% rule.”

But the problem is they got so focused on correcting the wording that they completely missed the actual lesson being taught.

The entire final slide of the post explained:

• Continuous loads are sized at 125%

• NEC references were provided directly

• The “80%” idea comes from reversing the math:   1 ÷ 1.25 = 0.8

That’s literally it.

Electricians have used shorthand, nicknames, and “rules of thumb” forever. Not because we’re trying to rewrite the NEC, but because simplifying concepts helps people remember them in the field.

The issue starts when people hear a phrase and instantly assume:

“This person thinks that exact wording is written in code.”

No.

The entire point was explaining where the phrase comes from.

And honestly, this happens constantly in the trade now.

People get so emotionally invested in being technically correct that they stop trying to understand what’s actually being communicated. Instead of listening for understanding, they listen for something to correct.

That mindset helps nobody.

Teaching is not just repeating code text word-for-word. Teaching is helping people understand:

• Why does the code say what it says

• How the math works

• How electricians apply it in real life

• and how field terminology connects back to the NEC

• If someone walks away understanding:

• What is a continuous load

• Why 125% matters

• And why do electricians commonly say “80%”

…then the lesson worked.

The goal should be education — not winning arguments over terminology.

— JoshTheSparky ⚡