Electrical Clearance Standards Quiz

What is the minimum separation distance between supply conductors of the same circuit operating at 15 kV?

What is the minimum separation distance between supply conductors of different circuits operating at 60 kV?

What is the minimum separation distance between supply conductors of different circuits operating at 100 kV, 1500 meters above mean sea level?

What is the additional clearance required for supply conductors of different circuits operating above 50 kV for every 300 meter increase in height above 1000 meters?

What clearance requirement is specified for fiber-optic supply cables (FOSC) meeting Rule 230F1b and supply cables and conductors?

Where can an FOSC be attached to a supply conductor or cable?

What is the minimum midspan spacing required for an FOSC that is not attached to the neutral in the span?

What are the voltage values used for calculating clearances in Table 235-5?

When applying clearances from Table 235-5 to facilities in opposite relative positions, what values should be used?

What is the clearance requirement between a communication line and an overhead line conductor in general when the phase-to-phase voltage of the overhead line is over 50 kV?

According to the table, what is the clearance requirement for a line conductor at or near a support, to the support itself when the phase-to-phase voltage of the overhead line is over 8.7 kV but less than 50 kV?

What is the minimum clearance requirement between a neutral conductor on a supply line and a communication line when the phase-to-phase voltage of the supply line is over 8.7 kV but less than 50 kV?

What is the clearance requirement between a communication line and a supply line when the phase-to-phase voltage of the supply line is 0 to 8.7 kV?

What is the minimum clearance requirement between two communication lines on jointly used structures when the phase-to-phase voltage of the supply line is over 8.7 kV but less than 50 kV?

What is the minimum clearance required in any direction from line conductors at or near a support to supports, for communication lines on jointly used structures, when the circuit phase-to-phase voltage is over 50 kV?

What is the minimum clearance requirement between a communication line and a supply line on jointly used structures when the phase-to-phase voltage is over 814 kV?

Which of the following statements is true about the table?

What is the minimum clearance required in any direction from line conductors at or near a support to supports, for communication lines on jointly used structures, when the circuit phase-to-phase voltage is over 8.7 kV but not over 50 kV?

What is the minimum clearance required in any direction from line conductors at or near a support to supports, for communication lines on jointly used structures, when the circuit phase-to-phase voltage is between 0 to 8.7 kV?

Which column in this table provides the clearance between communication lines on jointly used structures and the support or other structures?

What is the minimum clearance required in any direction from line conductors at or near a support to supports, for supply lines, when the circuit phase-to-phase voltage is over 50 kV?

What is the minimum clearance required in any direction from line conductors at or near a support to supports, for supply lines, when the circuit phase-to-phase voltage is between 0 to 8.7 kV?

What is the minimum clearance required in any direction from line conductors at or near a support to supports, for supply lines, when the circuit phase-to-phase voltage is between 8.7 kV to 50 kV?

What is the minimum vertical spacing between conductors supported on vertical racks when the span length is less than 45 meters?

What is the minimum vertical spacing required between open wire conductors held apart by intermediate spacers?

What is the minimum horizontal clearance required for a climbing space past any conductors, support arms, or other parts?

Where must a climbing space be provided on a support structure?

How does the location of support arms relate to the climbing space according to Rule 236C?

Which of the following is NOT considered an obstruction to the climbing space?

Which of the following are considered valid exceptions to the requirement that support arms should be located on the same side of the pole as the climbing space?

What aspect of the supporting structure is NOT specifically discussed in relation to the climbing space in the text?

According to the excerpt, what two conditions must be met to allow a reduction of the working space from 300 mm (12 in) to a lesser distance?

Under what circumstances should exposed energized equipment, such as switches or circuit breakers, be enclosed or guarded?

What specific rule within the code governs the minimum clearance distances from energized equipment while working on it?

What is considered 'equipment' for the purpose of measuring clearances under the specified rules?

According to the excerpt, what is the purpose of the working clearances from energized equipment?

Which of the following represents a piece of equipment that would require working clearance in accordance with the excerpt?

What safety measure is specifically mentioned in the text to render working conditions safe when the working space is reduced?

According to the excerpt, what is the main concern regarding the reduction of the working space?