At what voltage range may a wood structure be used?

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Multiple Choice

At what voltage range may a wood structure be used?

Explanation:
Wooden structures are chosen for lower-to-mid voltage lines because wood provides adequate mechanical support and insulation when designed with proper clearances and protective treatments. Up to about 161 kV and below, a wooden pole or lattice with the right hardware can meet the required electrical clearances, insulation, and loading without becoming impractically large or expensive. Beyond this range, the necessary creepage distances, insulation coordination, and weathering concerns become hard to meet with wood, and stronger materials like steel or concrete structures are used to handle the higher voltages and loads. So, the practical limit for using wood structures is 161 kV and below.

Wooden structures are chosen for lower-to-mid voltage lines because wood provides adequate mechanical support and insulation when designed with proper clearances and protective treatments. Up to about 161 kV and below, a wooden pole or lattice with the right hardware can meet the required electrical clearances, insulation, and loading without becoming impractically large or expensive. Beyond this range, the necessary creepage distances, insulation coordination, and weathering concerns become hard to meet with wood, and stronger materials like steel or concrete structures are used to handle the higher voltages and loads. So, the practical limit for using wood structures is 161 kV and below.

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