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Flagpoles are usually made of wood or metal. Flagpoles can be designed in one piece with a taper (typically a steel taper or a Greek entasis taper), [2] or be made from multiple pieces to make them able to expand.
The PV array consist of solar modules held in place by racks or frames that are attached to ground-based mounting supports. [11] [12] In general, ground mounted PV systems can be at the optimal tilt angle and orientation (as compared to roof mounted systems that can be non-optimal particularly for retrofits). Ground-based mounting supports include:
This list of flagpoles by height includes completed flagpoles which are either free–standing or supported, excluding the height of any pedestal (plinth), building, or other base platform which may elevate them.
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FRC poles are hollow and similar to the tubular steel poles, with a typical wall thickness of 1 ⁄ 4 to 1 ⁄ 2 in (6 to 13 mm) with an outer polyurethane coating that is ~0.002 in (0.05 mm) thin. As with all the other non-wood poles, FRC poles cannot be mounted with the traditional climbing hardware of hooks and gaffs.
Pole-mounted transformers may have lugs allowing direct mounting to a pole or may be mounted on cross-arms bolted to the pole. Aerial transformers, larger than around 75 kVA, may be mounted on a platform supported by one or more poles. [13] A three-phase service may use three identical transformers, one per phase.
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