Conduit Bending
Elbow
At what point on the body should the top of a 1/2-inch or 3/4-inch bender handle ideally reach?
Yes
Can 500 or 700 Series Wiremold be bent?
Yes
Can all 3/4 EMT benders be used to bend 1/2 rigid conduit? (But it will damage aluminum bending heads)
No, but they do make one
Does Wiremold require a special bender?
EMT, Steel Tube, Thin Wall
Electrical Metallic Tubing is known by at least 3 different names in the field, what are the names?
Ripples on the wall of the conduit
Failure to keep adequate, constant foot pressure during a end will result in?
70
How many bundles of 1/2-inch EMT are in a 'lift'?
Usually, 10-degrees
How many degrees is a box offset bent at?
10
How many stickers of 1/2-inch EMT to a Bundle?
2100 pounds
How much does a 'lift' of 1/2-inch EMT weigh
30-pounds
How much does a bundle of 1/2-inch EMT weigh?
Yes
Is it possible to cut Rigid Non-Metallic Conduit with nylon string?
Non Metallic Rigid Conduit
The NEC referrers to PVC conduit as?
Polyvinyl Chloride
The three letters 'PVC' in words are what? (Hint: Poly)
Hand, Elect, Mechanical, Hydraulic
What are the four categories of benders for metal conduit and raceways?
Almost any kind of lubricant
What do you apply to a bending shoe to prevent the shoe from scoring Aluminum conduit, and make it easier to remove the conduit from the shoe? (But, they seldom work very well)
Inside Diamenter
What does I.D. Stand for?
Outside Diameter
What does O.D. Stand for?
Thickness of the wall of the pipe
What does the term 'Schedule' refer to when discussing PVC?
Back-To-Back
What is a "U" bend commonly called?
To Heat PVC
What is a "heating blanket " or "hot box" used for?
Gain is the amount of pipe that is gained by bending on a radius rather than at right angles
What is meant by "Gain" when referring to a 90 degree bend?
Conduit bent incorrectly, bad kick or bend in conduit
What is meant by the term "Dog-Leg"?
90-degree bends
What is the "Arrow" on a hand bender used for?
Saddles
What is the "Notch" on a hand bender used for?
5 inches
What is the "Standard" take-up for a 1/2-inch EMT hand bender?
Back to Back 90-degree bends
What is the "Star" on a hand bender used for?
8-inches
What is the "standard" take-up for a 1-inch EMT hand bender?
6-inches
What is the "standard" take-up for a 3/4-inch EMT hand bender?
1 1/4-inch EMT bender
What is the largest size of hand benders made?
10-feet
What is the length of 1/2-inch EMT stick?
360
What is the maximum number of bends in degree that may be place in a conduit run between pull points?
4-inch
What is the maximum trade size of Electrical Metallic Tubing?
6-inch
What is the maximum trade size of Rigid Metal Conduit
6-inch
What is the maximum trade size of Rigid Non-Metallic Conduit?
4-inch
What is the maximum trade size of intermediate Metal Conduit?
40
What is the minimum schedule for Rigid Non-Metallic Conduit?
Hickey
What is the name of the bender used to bend only rigid conduit?
2
What is the offset multiplier for a 30 degree bend?
1.41
What is the offset multiplier for a 45 degree bend?
1/4-inch
What is the shrink per inch of rise of a 30 degree offset?
3/8-inch
What is the shrink per inch of rise of a 45 degree offset?
7000 feet
What is the total footage in a 'lift' of 1/2-inch EMT?
1 1/2-inch (6 x 1/4 = 6/4 = 1 1/2-inch
What is the total shrink of a 6-inch offset bent at 30-Degree Angles?
Chicago
What is the trade name for a Greenlee 1800 mechanical bender?
1 5/8-inch
What size hole-saw is required to cut a hole for a 1 1/4-inch conduit?
1 3/8-inch
What size hole-saw is required to cut a hole for a 1-inch conduit?
7/8-inch
What size hole-saw is required to cut a hole for a 1/2-inch conduit?
1 1/8-inch
What size hole-saw is required to cut a hole for a 3/4-inch conduit?
1/2-inch, 3/4-inch, 1-inch
What sizes of conduit will the Greenlee 1800 bend?
Beam saddle or 4-point saddle
What type of bend is used to go over a beam or column?
Saddle or 3-point saddle
What type of bend is used to go over another pipe or conduit?
Kick
What type of bend is used when a box offset can't be used?
1 5/16-inch (7 x 3/8= 2 1/8 = 42/16/2=21/16= 1 5/16
When bending a 3-point pre-position saddle, how much shrink must be added to the 'Distance To Obstruction' to determine bend point 'A' for a 7-inch saddle?
15/16-inch (5 x 3/8 = 15/8 = 30/16/2 = 15/16-inch
When bending a 3-point pre-positioned saddle, how much shrink must be added to the 'Distance To Obstruction' to determine bend point 'A' for a 5--inch saddle?
1 1/8-inch (18/8=\2=9/8= 1 1/8-inch)
When bending a 3-pointed saddle, how much shrink must be added to the 'Distance To Obstruction' to determine bend point 'A' for a 6-inch saddle?
Yes
When calculating the number of degrees in a run do box offsets count? (Inspectors rarely enforce it, but if they do your toast)
Generally, the face of the die
When threading conduit how far should you run the die head?
RGS
Which conduit has the thickest wall, EMT, IMC, or RGS?
No, as per the NEC the 1/2-shoe has a radius that is too small
Will all the shoes on the Greenlee 1800 mechanical bender bend a radius that is acceptable to the National Electrical Code?
