Overcurrent - Study guides, Class notes & Summaries

Where are overcurrent devices normally installed in a branch circuit. ️: Where the conductors recover their supply. The branch circuit conductor and overcurrent protective device must be sized for the actual non-continuous load plus what percentage of the continuous load. ️: 125% which of the following is true of the voltage rating of a fuse ️: it can be higher than the circuit voltage but never lower when selecting ampere ratings of fuses and circuit breakers the most important co...

TFM12 Test with 100% Correct Answers REVISED & VERIFIED 2023//2024 What is used to protect transformers or other devices supplied from power-supply conductors? - ANSWER A. An overcurrent device not rated over 20 Amperes. What does PLFA stand for? - ANSWER Power Limited Fire Alarm What does NPLFA stand for? - ANSWER Non-Power Limited Fire Alarm What material must NPLFA circuit conductors be made from? - ANSWER Solid or stranded copper What is a single station detector? - ANSWER Batt...

Conductors connected to the high leg of a four-wire delta system be color-coed with what color of insulation or tape? -correct answer -Orange (NEC Section 110.15) Dry-type transformers rated at 112.5kVA or less may be located out in the open provided they are separated from combustible material by a distance of ____. -correct answer -12" If the power factor is improved by the addition of a capacitor, the motor running overcurrent device must be selected based on the ___. -correct answer -...

circuit breaker mean? a. The breaker is inexpensive b. The breaker will have lots of nuisance trips c. The breaker will trip out regardless of conditions d. The breaker will only trip at 150% of its rated amperage b. 8 amps (E-11 Table XII Conductor Ampacity - Flexible Cords) - ANSWER maximum current carrying capacity for an flexible cord of 16 AWG with 2 current carrying conductors inside the engine spaces is a. 6 amps b. 8 amps c. 10 amps d. 20 amps c. only in one direction - ANS...

What is Amperes Interrupting Current (AIC)? ️: Maximum fault current that the breaker will safely interrupt What is considered a high-level fault? ️: 50,000 A or larger Equipment must have an interrupting rating of at least ️: Equal to current that must be interrupted. What is a ground fault? ️: Unintentional grounding of conductors in an electrical system For 480V circuits, arc current may be as low as ___ of the available bolted fault current and seldom exceed ___ ️: 38% ,...

What is the minimum working clearance from an electrical panel under 600 V? - 36" Voltage drop in wire is a function of: - Wire gauge, Length of wire, Current flow in the wire A 12-volt direct current, 13-watt fluorescent light is controlled by a photocell. The average daily on-time is 12 hours per day. How many watt-hours are consumed by the light on an average day? - 156 Where may you use nonmetallic-sheathed cable? - inside floors and walls What is the maximum permitted distance betwe...

What is the minimum working clearance from an electrical panel under 600 V? - ANSWERS36" Voltage drop in wire is a function of: - ANSWERSWire gauge, Length of wire, Current flow in the wire A 12-volt direct current, 13-watt fluorescent light is controlled by a photocell. The average daily on-time is 12 hours per day. How many watt-hours are consumed by the light on an average day? - ANSWERS156 Where may you use nonmetallic-sheathed cable? - ANSWERSinside floors and walls What is the...

Electrical Level 3 Module 1 Load Calculations and Branch Feeder Circuits Quiz_ 2022. According to the NEC®, the ampacity of branch circuit conductors must be derated when there are more than how many current-carrying conductors in a raceway? Air conditioning overcurrent protective devices can never exceed what percentage of the motor-rated load current or the branch circuit selection current (whichever is greater)? Conductors must be derated when installed in conduit Continuous load...

Electrician's Licensing Exam with 100% Correct Solutions NEC Article defines breakers and fuses. - According to NEC Article 100, a device that opens and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent.

What does PLFA stand for? - Answer- Power Limited Fire Alarm What does NPLFA stand for? - Answer- Non Power Limited Fire Alarm What material must NPLFA circuit conductors be made from - Answer- Only solid or stranded copper is permitted What is a single station detector? - Answer- Battery powered smoke detectors that do not communicate off premises. What is a multiple station detector? - Answer- Mains powered smoke detectors with battery backup that are linked together, so that if on...