Journeyman Electrician's Conduit Bending Flashcards
7 cards from real Journeyman Electrician’s Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Journeyman Electrician's Conduit Bending flashcards as text
In a 3-point saddle bend, what angle is used for the CENTER bend?
Answer: 45 degrees
A 3-point saddle uses a 45-degree center bend and two outer bends of 22.5 degrees each to clear an obstruction.
In a 3-point saddle bend, what angle are the two OUTER bends set to?
Answer: 22.5 degrees
The outer bends in a 3-point saddle are 22.5 degrees each, which is half the 45-degree center bend.
What multiplier is used when calculating the distance between bend marks for a 22.5-degree offset?
Answer: 2.613
A 22.5-degree offset uses a multiplier of 2.613 because 1 divided by sin(22.5 degrees) = approximately 2.613.
A conduit needs a 6-inch offset using 22.5-degree bends. What is the distance between the two bend marks?
Answer: 15.68 inches
Distance = 6 x 2.613 = 15.68 inches between the two bend marks.
What is "developed length" in conduit bending?
Answer: The total conduit length required for a run, including all straight sections and bend arc lengths
Developed length is the total conduit material required for a run, accounting for every straight section plus the arc length through each bend.
When making back-to-back 90-degree bends for a U-shape with a desired INSIDE measurement of 12 inches, how far from the heel of the first 90 is the second bend mark placed?
Answer: 12 inches
For back-to-back bends, the second mark is placed at the desired inside measurement (12 inches) measured from the heel of the first completed 90-degree bend.
Per NEC Chapter 9 Table 2 (referenced by Section 344.24), what is the minimum field-bend radius for 1/2" Rigid Metal Conduit (RMC)?
Answer: 4 inches
NEC Chapter 9 Table 2 requires a minimum 4-inch bend radius for 1/2" RMC to prevent damage and internal diameter reduction.