Which OSHA standard governs general electrical safety-related work practices in the workplace?
Safety And Osha
Question · Medium
14 on 15, 12 on 20, 10 on 30
Short
According to NFPA 70E, what is the minimum arc-rated PPE category required when working on energized 480 V equipment within the restricted approach boundary if the incident energy is 8 cal/cm2?
Question · Hard
Chapter 1: Electrical Safety, OSHA & NFPA 70E
1.1 OSHA Regulations & Subpart S Compliance
Study guide
What is the primary purpose of a lockout/tagout (LOTO) procedure?
Question · Easy
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Ohm's law states that current in a DC circuit is equal to:
Electrical Theory
What is the power dissipated by a 240 V circuit drawing 20 A at unity power factor?
Lockout/tagout, called like a cup final
In a series DC circuit with three 10-ohm resistors, what is the total resistance?
1.2 NFPA 70E Standards & Arc-Flash Protection
Which best describes alternating current (AC)?
What is the peak voltage of a 120 V RMS AC waveform?
Which document is the primary code used in the United States for electrical installations?
Nec Code
GFCI inspection
NEC Article 210 covers which type of circuits?
1.3 Lockout/Tagout (LOTO) & Absence-of-Voltage Verification
Per NEC 210.8, GFCI protection is required for 125 V, 15 A and 20 A receptacles in which dwelling location?
Per NEC 210.12, AFCI protection is required for all 120 V, 15 A and 20 A branch circuits supplying outlets in which dwelling rooms?
Per NEC 210.52, in a dwelling unit, what is the maximum spacing between receptacle outlets along the wall line?
Per NEC Table 220.41 (2023 NEC; formerly Table 220.12), what is the minimum general lighting load for a dwelling unit?
Load Calculations
1.4 Jobsite Hazard Recognition & Fall/Trench Safety
Per NEC 220.52, what is the minimum load for each small appliance branch circuit in a dwelling unit?
Per NEC 240.6, which is a standard ampere rating for fuses and inverse time circuit breakers?
Per NEC Table 310.16, what is the allowable ampacity of a 12 AWG copper THHN conductor in a 75 C column?
Conductors And Cables
Per NEC 240.4(D), the overcurrent protection for a 12 AWG copper conductor is limited to:
Chapter 2: Electrical Theory & AC/DC Fundamentals
2.1 DC Fundamentals, Ohm's Law & Power
When more than three current-carrying conductors are installed in a raceway, per NEC 310.15(C)(1) the ampacity must be adjusted by what factor for 4-6 conductors?
What does the 'T' in conductor insulation type THHN signify?
Per NEC Chapter 9 Table 1, what is the maximum allowable conductor fill of a conduit when three or more conductors are installed?
Conduit And Raceway
Per NEC 358.30, the maximum support spacing for electrical metallic tubing (EMT) is:
2.2 Series, Parallel & Combination Circuits
Per NEC 344.30, the maximum support spacing for rigid metal conduit (RMC) sizes 1 in. (trade size) and smaller is:
Per NEC 344.24 and Chapter 9 Table 2, the radius of a 90-degree bend in a 1-inch trade size RMC must be at least:
Per NEC 358.26, between pull points in a run of EMT, the total bends in degrees must not exceed:
Which conduit type is typically used in dry, exposed indoor locations where physical damage is unlikely?
2.3 AC Fundamentals, Reactance & Magnetism
Per NEC 250.66, the size of the grounding electrode conductor for a service with 2/0 AWG copper service-entrance conductors is:
Grounding And Bonding
Per NEC 250.52, which is NOT an acceptable grounding electrode?
What is the primary purpose of bonding metal parts of an electrical system?
Per NEC 250.122, the equipment grounding conductor for a circuit protected by a 60 A overcurrent device is sized at:
2.4 Impedance, Power Triangles & Power Factor
Per NEC 314.16, the minimum cubic-inch volume per 12 AWG conductor in an outlet box is:
Boxes And Enclosures
Per NEC 314.16(B)(2), a yoke or strap containing one or more devices (such as a receptacle or switch) is counted as:
Per NEC 314.27, what is the minimum requirement for an outlet box used to support a ceiling-suspended (paddle) fan?
Per NEC 314.17, a cable entering a nonmetallic box must be secured within how many inches of the box?
Chapter 3: NEC Layout, General Requirements & Services
3.1 NEC Structure, Navigation & Article 100 Definitions
What is the function of a panelboard per NEC Article 408?
Panelboards And Distribution
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