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A vault is often accessible directly from a street, sidewalk or other outdoor space, thereby distinct from a basement of a building. [1] [2] Utility vaults are commonly constructed out of reinforced concrete boxes, poured concrete or brick. Small ones are usually entered through a manhole or grate on the topside and closed up by a manhole cover.
A pole route (or pole line in the US) is a telephone link or electrical power line between two or more locations by way of multiple uninsulated wires suspended between wooden utility poles. This method of link is common especially in rural areas where burying the cables would be expensive.
In both those instances the white wire should be identified as being hot, usually with black tape inside junction boxes. The neutral wire is identified by gray or white insulated wire, perhaps using stripes or markings. With lamp cord wire the ribbed wire is the neutral, and the smooth wire is the hot. NEC 2008 400.22(f) allows surface marking ...
Both pole-mounted and pad-mounted transformers convert the overhead or underground distribution lines' high 'primary' voltage to the lower 'secondary' or 'utilization' voltage inside the building. The primary distribution wires use the three-phase system. Main distribution lines always have three 'hot' wires plus an optional neutral.
Because the wires were suspended in air, they could dissipate heat well. Ceramic tubes were inserted into holes bored in wall studs or floor joists, and the wires were directed through them. This kept the wires from coming into contact with the wood framing members and from being compressed by the wood as the house settled.
“When you’re pole vaulting, not only do you need the height, but you need the depth,” he says. “You have to go deep enough to get over the bar. It’s very common in the vault, you’ll ...
To a man, though, other field athletes admit that pole vaulters have it the worst. The few American pole vaulters with lucrative sponsorships might be able to afford to have two or more sets of poles.
A telecommunications pedestal is a ground-level housing for a passive connection point for underground cables. Technicians require access to connection points. Placing such a point underground (e.g., in a utility vault) is expensive, so pedestals are preferred when they are an