Electrical Clearance Standards Quiz

<p>3% (C)</p> Signup and view all the answers

<p>No specific clearance is provided in the text. (B)</p> Signup and view all the answers

<p>At the pole or in the span. (D)</p> Signup and view all the answers

<p>The spacing specified in Rule 235G. (B)</p> Signup and view all the answers

<p>Voltage between the conductors involved. (D)</p> Signup and view all the answers

<p>The values specified in Table 235-5 for the usual positions. (C)</p> Signup and view all the answers

<p>150 mm (A)</p> Signup and view all the answers

<p>150 mm plus 10 mm per kV in excess of 8.7 kV (A)</p> Signup and view all the answers

<p>177 mm (C)</p> Signup and view all the answers

<p>580 mm plus 10 mm per kV in excess of 50 kV (A)</p> Signup and view all the answers

<p>177 mm (A)</p> Signup and view all the answers

<p>11 plus 0.2 in (C)</p> Signup and view all the answers

<p>580 mm (D)</p> Signup and view all the answers

<p>The table provides clearance requirements for all types of overhead lines, including power lines, communication lines, and service drops. (B)</p> Signup and view all the answers

<p>11 plus 0.2 in (C)</p> Signup and view all the answers

<p>3 plus 0.2 in (D)</p> Signup and view all the answers

<p>Communication lines on jointly used structures (mm) (B)</p> Signup and view all the answers

<p>11 plus 0.2 in (A)</p> Signup and view all the answers

<p>3 plus 0.2 in (D)</p> Signup and view all the answers

<p>11 plus 0.2 in (A)</p> Signup and view all the answers

<p>100 mm (D)</p> Signup and view all the answers

<p>100 mm (C)</p> Signup and view all the answers

<p>The clearance is specified by Rule 236E. (C)</p> Signup and view all the answers

<p>On only one side or corner. (C)</p> Signup and view all the answers

<p>Support arms should be located on the same side of the pole as the climbing space. (B)</p> Signup and view all the answers

<p>A portion of the supporting structure on the same side as the climbing space (D)</p> Signup and view all the answers

<p>Both A and B. (B)</p> Signup and view all the answers

<p>Material used for the supporting structure. (C)</p> Signup and view all the answers

<p>No more than two sets of line arms and buckarms can be involved and the working conditions must be rendered safe through specific measures. (D)</p> Signup and view all the answers

<p>When the equipment is located below the top conductor support, on the climbing side of the structure, and the requirements of Rule 441, Part 4, of this Code cannot be met. (D)</p> Signup and view all the answers

<p>Rule 441 or 446 (D)</p> Signup and view all the answers

<p>All metal parts, including supports, braces, and any part within 25 mm of a transformer case. (C)</p> Signup and view all the answers

<p>To prevent accidental contact with energized parts and ensure the safety of workers during operation or adjustment. (B)</p> Signup and view all the answers

<p>A metal bracket attached to a transformer that is grounded. (D)</p> Signup and view all the answers

<p>Using rubber protective equipment or other suitable devices to insulate conductors. (C)</p> Signup and view all the answers

<p>Increased risk of accidental contact with energized parts. (B)</p> Signup and view all the answers

Supply conductors should have a clearance of 300 mm and 12 mm.

For conductors above 50 kV, no specific clearance value is given.

For different circuits at 0 to 8.7 kV, clearance remains 300 mm and 12 mm.

Increase clearance by 3% for each 300 m over 1000 m at voltages above 50 kV.

All clearance values for voltages above 50 kV depend on maximum operating voltage.

Fiber-optic supply cables must be positioned away from supply conductors to prevent damage.

Midspan spacing for FOSC not attached to neutral must meet Rule 235G requirements.

Provides vertical clearance requirements between conductors at supports for various voltages.

Neutral conductors are not included in clearance rules specified in Rule 230E1.

Clearance values are calculated based on voltages between the specific conductors involved.

Minimum distance required from line conductors to supports and other conductors.

Clearance requirements vary with different voltage levels from conductors.

Clearance between communication lines and supply lines generally has specific values.

Higher phase-to-phase voltages require greater clearances between conductors.

Regulates the required clearances for conductors in jointly used structures.

Additional 3% clearance added for each 300 m over 1000 m at voltages above 50 kV.

Specific clearance measured around general structures for safety.

Clearances are commonly measured in inches for electrical safety standards.

Working space can be reduced to 300 mm if two conditions are met: maximum two sets of arms involved, and protective equipment is used.

Energized parts like switches must be enclosed if below top conductors and on climbing side of structure.

Guarding is required if the equipment cannot meet Rule 441 conditions and is located below the support point.

Parts like switches shall be arranged to avoid body contact closer than specified during operation or adjustment.

Equipment includes non-current carrying metal parts like supports for cables, less than 25 mm from transformers.

Clearance values must be arranged considering the operational adjustments to prevent exposure to energized parts.

Energized parts are components like circuit breakers and surge arresters that can pose risks when exposed.

Specifies clearances between communication and supply facilities located on the same structure for safety.

Vertical spacing between conductors is 100 mm (4 in) for spans 0 to 45 m.

For spans over 45 to 60 m, vertical spacing is 150 mm (6 in).

Spacing increases to 200 mm (8 in) for spans over 60 to 75 m.

Spans over 75 to 90 m require a vertical spacing of 300 mm (12 in).

Vertical spacing may be reduced with intermediate spacers but not below 100 mm (4 in).

Climbing space must allow horizontal clearances past conductors or support arms.

Parts of supporting structure included in climbing space are not obstructions.

Support arms should be located on the same side of the pole as climbing space.

Distance needed from line conductors to other structures for safety.

Regulations ensuring safe distances and practices for overhead electrical lines.

Materials that allow electricity to flow through them.

Wires that carry excess current and are grounded to avoid overload.

Voltage measured between two different phases in an electrical circuit.

Wires that carry electricity from power stations to distribution points.

Wires that transmit data and signals for communication.

Safety guidelines for managing voltages above certain thresholds (e.g., 8.7 kV, 50 kV).