Conduit Bending
What is the shrinkage per inch and spacing multiplier for an offset bent on 30 degrees?
What is 1/4 inch and x2
In a 3 phase 120/208 volt system what are the colors for A, B, and C phases?
What is Black, Red, and Blue.
This type of non-conductive footwear is designed to protect electricians by resisting a high amount of voltage before allowing current to pass to the ground?
What are Electrical Hazard (EH) rated boots
On a standard tape measure, what is the simplified fraction for a measurement of 4/16 of an inch?
What is 1/4"
Updated every three years, this massive publication is the definitive regional standard for safe electrical design, installation, and inspection in the United States?
What is the National Electrical Code (or NEC)
What is the shrinkage per inch and spacing multiplier for an offset bent on 45 degrees?
What is 3/8 inch and x1.4
In a 3 phase 277/480 volt system what are the colors for A, B, and C phases?
What is brown, orange, and yellow.
When working with energized parts, these protective hand-covers must be combined with a pair of outer leather protectors to prevent punctures and cuts?
What are rubber insulating gloves
When adding a 1/4-inch offset and a 1/2-inch offset together on a run of conduit, the total combined height added to the run is this fraction of an inch?
What is 3/4 of an inch
These safety devices, mandatory in modern kitchens and bathrooms, are designed to protect people by shutting off power when they detect a current leakage to ground as low as 4 to 6 milliamperes?
What is a GFCI (or Ground Fault Circuit Interrupter)
When marking for a 3 point saddle what is the shrinkage per inch of saddle height, and what is your outer marks spacing multiplier?
What is 3/16 of an inch and x2.5
What color should circuit 18 in a 3 phase 120/208 volts system?
What is blue
These safety items must meet ANSI Z87.1 standards and are required to prevent damage from flying debris, blinding arcs, or chemical splashes?
What are safety glasses (or a face shield)
When bending a standard 45-degree offset, the conduit shrinks by 3/8 of an inch for every inch of offset depth. For a 4-inch deep offset, the total shrinkage is this many inches?
What is 1 and 1/2 inches (Calculation: 4 × 3/8 = 12/8 = 1 1/2
These fast-acting, one-time-use safety devices contain a metal strip that melts to break the circuit when a severe overcurrent occurs?
What is a fuse
When bending a 4 point saddle if you want to keep the bender facing the same direction, often referred to as "the push through method", what marking on the bender do you use for the first offset and what marking do you use for the second offset?
What is star and arrow
What color should circuit 27 in a 3 phase 277/480 volts system?
What is orange
According to OSHA, everyday work clothes for electricians should never contain these two highly meltable synthetic materials, which can severely worsen burn injuries
What are polyester and nylon
If an electrician cuts a 10-foot piece of strut into three equal pieces, each piece will measure exactly 3 feet plus this remaining fraction of a foot?
What is 4 inches
To ensure conductors aren't damaged during pulls, the NEC states that a single run of conduit between pull points cannot contain more than this total number of degrees in bends?
What is 360 degrees (Equal to four 90-degree bends)
What is the equation for a rolled offset?
What is A2+ B2= C2
In a standard 3 phase panel, C phase circuits are always a multiple of, or one less than a multiple of, which number?
What is 6 (or one less of a multiple of 6)
To protect against high-voltage shocks, electricians must wear hard hats with this specific industrial rating, which are proof-tested at 20,000 volts?
What is Class E (Electrical)
This is the resulting measurement when you subtract 3/16 of an inch from a conduit mark that is sitting at exactly 7/8 of an inch?
What is 11/16 of an inch (Calculation: 14/16 - 3/16 = 11/16)
For electrical equipment rated 600 volts or less, this is the minimum depth of clear working space required in front of the live panels when working in a "Condition 1" (exposed live parts to ungrounded parts) environment?
What is 3 feet