Transformers
A transformer works using this type of current.
What is alternating current (AC)?
This mark on the bender is used to make a stub‑up.
What is the arrow?
This NEC article covers transformers and their overcurrent protection.
What is Article 450?
This is the amount of electrical energy used by a device.
What is power?
NEC Article 250 covers this major electrical safety topic.
What is grounding and bonding?
A transformer changes electrical __________ levels.
What is voltage?
This bend is used to pass over an obstruction
What is an offset?
Overcurrent protection on a transformer’s primary side protects against this condition.
What is short circuits and ground faults?
This is the push or pressure behind electrical current.
What is voltage?
This conductor connects electrical equipment to earth.
What is the grounding electrode conductor (GEC)?
Transformers work based on this electrical principle.
What is electromagnetic induction?
The most common offset angles are 10°, 22½°, 30°, and _____.
What is 45°?
NEC allows primary‑only overcurrent protection when the secondary conductors meet this condition.
What is they are properly protected by conductor ampacity rules?
ELI The _____________
ICE MAN
The grounded conductor is more commonly known as this.
What is the neutral?
This metal part of the transformer helps guide magnetic flux.
What is the core?
This term describes how much conduit length is lost during a bend.
What is shrink?
This type of overcurrent protection device is commonly used to protect transformers.
What is a fuse or circuit breaker?
Impedence is represented by the symbol
Z
Bonding ensures all metal parts are at this electrical condition.
What is the same electrical potential?
In a delta system, the line voltage is __________ the phase voltage.
What is equal to?
This bend uses three bends to go around a large obstacle.
What is a saddle bend?
Excessive inrush current occurs when a transformer is energized, especially during this moment.
What is startup or energizing?
In a series circuit, adding more resistance causes total current to do this.
What is decrease?
Grounding electrodes include ground rods, metal water pipe, and this structural component.
What is concrete‑encased electrode (Ufer ground)?