A. 45°B. HorizontalC. VerticalD. 75°Answer: C. VerticalExplanation: - The earthing rod orientation in the pit should be Vertical.
- Salt and charcoal are added in the earth pit for improving conductivity.
- Earthing wire is used in the electric circuit to prevent damage to equipment or personnel handling it. The minimum size of earthing wire is dependent on the current through it.
- The area of cross section of the earthing lead should not be less than half of area of cross section of the thickest wire used in the installation.
- The size of these conductors depends on the size of the cable used for the wiring circuit.
- The cross-sectional area of the earth wire must be less than half of the cross-sectional area of the thickest wire used in the electrical wiring installation.
- Generally, the size of the copper wire used as earth continuity conductor is 3 SWG. Earth wires smaller than 14 SWG must not be used.
- The minimum size of the earth lead should not be smaller than 8 SWG.
A. 45°
B. Horizontal
C. Vertical
D. 75°
Answer: C. Vertical
Explanation:
- The earthing rod orientation in the pit should be Vertical.
- Salt and charcoal are added in the earth pit for improving conductivity.
- Earthing wire is used in the electric circuit to prevent damage to equipment or personnel handling it. The minimum size of earthing wire is dependent on the current through it.
- The area of cross section of the earthing lead should not be less than half of area of cross section of the thickest wire used in the installation.
- The size of these conductors depends on the size of the cable used for the wiring circuit.
- The cross-sectional area of the earth wire must be less than half of the cross-sectional area of the thickest wire used in the electrical wiring installation.
- Generally, the size of the copper wire used as earth continuity conductor is 3 SWG. Earth wires smaller than 14 SWG must not be used.
- The minimum size of the earth lead should not be smaller than 8 SWG.