test

Finger-safe products are effective in reducing the likelihood of electrical shock. Some component products with finger-safe, IP20 claims, have a "conditional" IP20 rating. For example, the conductor termination may be considered IP20 rated if the conductor is prepared and installed in the terminal properly.

true

The distance associated with each shock approach boundary is determined by the nominal phase-to-phase system voltage range as established in Table 130.4(D)(a) and Table 130.4(D)(b). Table 130.4(D)(a) is intended for use with ? systems. Table 130.4(D)(b) is intended for use with ? voltage systems.

AC / DC

Limited approach boundary

An approach limit at a distance from an exposed energized electrical conductor or circuit part within which a shock hazard exists

Restricted approach boundary

An approach limit at a distance from an exposed energized electrical conductor or circuit part within which there is an increased risk of shock, due to electrical arc-over combined with inadvertent movement, for personnel working in close proximity to the energized electrical conductor or circuit part

Identify which of the following statement(s) is/are true as they relate to unqualified persons.

An unqualified person is defined as a person who is not a qualified person. Unqualified persons must be familiar with any electrical safety-related practices necessary for their safety. Unqualified persons must be trained in any electrical safety-related practices necessary for their safety.

The employer must document that each employee has received the training required by the employee training requirements of 110.2(D). This documentation of training must satisfy which of the following criteria?

Be made when the employee demonstrates proficiency in the work practices involved Be maintained for the duration of the employee's employment Contain the content of the training, each employee's name, and dates of training

Determine which of the following are required to meet the NFPA 70E requirements related to emergency response training.

Employees exposed to shock hazards are required to be trained in methods of safe release of victims from contact with exposed energized electrical conductors or circuit parts. Employees responsible for responding to medical emergencies shall be trained in first aid and emergency procedures. Employers shall verify at least annually that employee emergency response training is current . The employer shall document that emergency response training has occurred.

When conducting an arc flash risk assessment in accordance with 130.5, the "condition of maintenance" is not a consideration.

False

Energized work is generally prohibited. Such work is permitted under which of the following conditions?

For energized electrical conductors and circuit parts that operate at less than 50 volts, where the capacity of the source and any overcurrent protection between the energy source and the worker are considered and it is determined that there will be no increased exposure to electrical burns or to explosion due to electric arcs. Where the employer can demonstrate that deenergizing introduces additional hazards or increased risk. Where the employer can demonstrate that the task to be performed is infeasible in a deenergized state due to equipment design or operational limitations

Determine which of the following among the NFPA 70E requirements relate to qualified person training.

I. The employee must be familiar with the proper use of the special precautionary techniques; applicable electrical policies and procedures, PPE; insulating and shielding materials; and insulated tools and test equipment. II. The employee must be trained in the skills and techniques necessary to determine the nominal voltage of exposed energized electrical conductors and circuit parts. III. The employee must be trained to select an appropriate test instrument and demonstrate how to use the correct device to verify the absence of voltage. IV. The employer must determine that each employee is complying with the safety-related work practices required by NFPA 70E through regular supervision or inspections conducted on at least an annual basis. V. Tasks performed less often than once per year require retraining before the performance of the work practices involved.

A component of an arc flash risk assessment used to predict the incident energy of an arc flash for a specified set of conditions defines which of the following?

Incident energy analysis

A shock risk assessment is required to make which of the following determinations?

The boundary requirements. The personal protective equipment necessary to minimize the possibility of electric shock to personnel. The voltage to which personnel will be exposed

The requirements that address host and contract employer's responsibilities require a number of things. Which of the following are among those requirements?

The host employer must provide the contract employer with the information about the installation necessary to make the assessments required by Chapter 1 of NFPA 70E. There must be a documented meeting between the host employer and the contract employer. Where the host employer has knowledge of hazards covered by NFPA 70E that are related to the employer's work. The contract employer must ensure that each employee follows the work practices required by NFPA 70E in addition to any safety-related work rules of the host employer

The safety training requirements in 110.2 state that employees are required to be trained in a number of topics. Which of the following are among those employee training topics?

To identify and understand the relationship between electrical hazards and possible injury. To understand the specific hazards associated with electrical energy. In safety-related work practices and procedural requirements, as necessary, to provide protection from the electrical hazards associated with their respective job or task assignments

An unqualified person is never permitted to cross the restricted approach boundary.

True

Garments worn as outer layers over arc-rated clothing, such as jackets or rainwear, must also be made from arc-rated material.

True

Owners of existing fusible systems should consider upgrading Class H, K5, K9, and RK5 fuses (older style fuses) to Class RK1 fuses

True

arc-flash boundary

When an arc flash hazard exists, an approach limit at a distance from a prospective arc source within which a person could receive a second degree burn if an electrical arc flash were to occur

The arc flash hazard that may occur during an arc flash event is ? dependent on the OCPD that is protecting the equipment

directly