Quick Hits

EPISODE 6 — MIXED-SIZE CONDUCTORS

SLIDE 1 — IT GETS HARDER

What happens when your conduit has:

#12

#10

#8

#6

?

You can't just grab a single “maximum wires” number.

👀

NOW WE CALCULATE AREA.

SLIDE 2 — ADD EACH AREA

Example:

#12 = 0.0133

#10 = 0.0211

#8 = 0.0366

#6 = 0.0507

Add them:

0.0133 + 0.0211 + 0.0366 + 0.0507

= 0.1217 in²

SLIDE 3 — COMPARE TO THE RACEWAY

If your permitted raceway area is:

0.122 in²

Your conductor area is:

0.1217 in²

😮‍💨

0.1217 < 0.122

✅ PASS

But don't round early!

SLIDE 4 — EXAM MINDSET

🧠 MIXED CONDUCTORS?

Don't hunt for a magic wire-count answer.

LOOK UP → CALCULATE → ADD → COMPARE → VERIFY

That's how you solve the problem.

← View Chapter 9 Home

← Back To Conduit Fill Home

← Back To Quick Hits Home