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A small circuit breaker typically has a manual control lever to switch the circuit off or reset a tripped breaker, while a larger unit may use a solenoid to trip the mechanism, and an electric motor to restore energy to springs (which rapidly separate contacts when the breaker is tripped).
A thermal switch (sometimes thermal reset or thermal cutout (TCO)) is a device which normally opens at a high temperature (often with a faint "plink" sound) and re-closes when the temperature drops. The thermal switch may be a bimetallic strip , often encased in a tubular glass bulb to protect it from dust or short circuit .
Picea breweriana, known as Brewer spruce, [2] [3] Brewer's weeping spruce, or weeping spruce, is a species of spruce native to western North America, where it is one of the rarest on the continent. The specific epithet breweriana is in honor of the American botanist William Henry Brewer .
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It has a narrow conical crown. The leaves are needle-like, yellow-green, 12–15 mm (15 ⁄ 32 – 19 ⁄ 32 in) long, four-sided, curved, with a sharp point, and extend from all sides of the twig. The bark is gray-brown on the surface and red-brown on the inside, thin, and scaly. The wood is light, soft, has narrow rings, and has a slight red ...
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Imagine doing everything in your power to reduce your mysteriously high energy bill — to the point where you’re turning off the breakers every time you leave the house — to no avail.
The seed cones are globose, 7–14 millimetres (9 ⁄ 32 – 9 ⁄ 16 in) in diameter, with 6–10 scales, green at first, maturing brown in early fall, 6–8 months after pollination. The male cones are 3–4 millimetres (1 ⁄ 8 – 5 ⁄ 32 in) long, dark red, turning brown after pollen release in early spring. The seeds fall quickly and can ...