conduit
10 ft of conduit is often referred to as a
stick
The amount by which the total run that conduit can cover is reduced because of the extra length required to bend around an obstacle is called
shrink
where does gain come from
the curved radius of the bends allows the pipe to stretch a greater distance
Any bend of less than 90° that is used to change direction in a conduit run is called a
kick
when making a saddle in witch direction should the hook face
to the center of the obstruction
A threadable conduit with fairly thick walls
rigid metal conduit
The reduction in distance that a conduit can run per inch of offset elevation is called
shrink constant
when laying out a back to back 90 to find total length of conduit what must be subtracted
gain x 2
A double conduit bend with two equal angles bent in opposite directions in the same plane in a conduit run is called
offset
when making a 3 bend saddle using a 45 deg. center bend what mark on the bender should be used
center of a 45 benchmark
EMT stands for?
electrical metallic tubing
A multiple bend in conduit where one of the bends is not in the same plane as the other bend is called a
dogleg
When making a back-to-back bend, what benchmark on the bender must be aligned with the pencil mark in order to make the second bend using the bender in the reversed direction?
star
A small offset bend used to move conduit away from a wall and into an electrical box is called a
box offset
where do you place your center mark
center mark= distance to center of obstruction + shrink
what color protective caps are used for ridge
black, red and blue
how to calculate shrink
shrink = shrink constant x offset rise
when measuring the distance between connectors for a back to back where should the start and end of your tape be?
back of each connector
An offset where the second bend is made with an angle that is too large and the end of the conduit rises relative to the top of the obstacle is called an
open offset bend
make a 3 bend saddle is going around a 3.5 inch pipe with a 45 center bend what is the distance between mark A and B, and, A and C
8.75 inches
what color protective caps does IMC use
yellow, green and orange
2 offsets turned at a 90 degree angle from each other is called a
corner offset
where should you place the second bend mark from the back of the first bend
distance to mark= back to back distance - take up
An offset where the second bend is made with an angle that is too small and the end of the conduit falls relative to the top of the obstacle is called a
closed offset bend
what are the 2 methods for making a four bend saddle
edge and center of the obstruction