ANSWERS SURE A+
✔✔Energized electrical cables inside underground chambers can be disturbed and
produce a hazardous environment. What precautions should be taken? - ✔✔1. Ensure
that cables are held in place prior to undoing or cutting fasteners.
2. Don't climb onto cables, junctions, connections, splices or supports.
3. Verify equipment condition if required to move cables, junctions or splices.
✔✔The roll of the attendant of a confined space electrical vault shall NOT do the
following: - ✔✔Enter the space to provide assistance when required.
✔✔The roll of the attendant of a confined space electrical vault shall do the following: -
✔✔1. Maintain effective communication with workers in the space.
2. Keep an eye on potential hazards developing in and around the space.
3. Control unauthorized access into the space.
✔✔It is permissible to use an external retrieval rescue system under what following
condition: - ✔✔There are no significant obstructions to the path of rescue.
✔✔The frequency requirements for calibration of direct-read atmosphere testing
equipment is: - ✔✔As per the manufacturers recommendations.
✔✔What must be conducted each time prior to entry into an energized electrical space:
- ✔✔A risk assessment shall be performed to determine the energy source hazards and
controls.
✔✔The content of the confined space permit (where required) DOES NOT need to
contain: - ✔✔Managers approval for entry into the space.
, ✔✔The content of the confined space permit (where required) must contain the
following: - ✔✔1. The date and location entry.
2. Scope of work to be performed inside the space.
3. Record worker entry and exit.
✔✔A minimum of ___ cal/cm2 is to be worn by electrical workers. - ✔✔8 cal/cm2
✔✔A worker wearing an FR shirt with a rating of 12 cal/cm2 plus an undershirt that is
made of non-melting fabrics can have a combined total cal/cm2 of ___. - ✔✔12 cal/cm2
✔✔Arc FR clothing shall be cleaned according to what? - ✔✔Manufacturers
recommendations.
✔✔Arc flash rated clothing shall be worn when: - ✔✔There is a hazard of arc flash.
✔✔ATPV stands for: - ✔✔Arc Thermal Protective Value
✔✔When performing arc flash assessments, why should consideration be given to low
fault energy: - ✔✔Low fault currents can result in very long clearing times.
✔✔In a discussion about differences in potential; a second point of contact might be
best described as: - ✔✔Ina pad-mount transformer, the phase conductor on a URD
cable grounded 700ft away and the ground rod in the pad mount transformer; and/or co-
worker in a 2 man bucket.
✔✔The specific operational description of a distribution underground 600 amp elbow
that includes the designation 'dead-break' means: - ✔✔The elbow can only be
connected or disconnected when the circuit is 'dead'.
✔✔The number of lifetime operations allowed for a circuit interruption device is
generally contingent on: - ✔✔The number of operations at a rated current limit, as
specified by the manufacturer.
✔✔An arc flash hazard is determined by (3) factors: - ✔✔Available current, distance of
the employee to the arc, and duration of the arc.
✔✔The correct definition for 'insulated': - ✔✔Separated from other conducting surfaces
by a dielectric (including air) offering high resistance to the passage of electrical current.
✔✔In regards to Minimum Approach Distances (MAD), what conditions need to be
taken into consideration in addition to voltage levels? - ✔✔Altitude correction factor.