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A large electrical room may have extensive provisions for grounding (earthing) and bonding enclosures of electrical equipment to prevent stray voltage and danger of electric shock, even during faults in the electrical system. Lightning protection requires different measures than protection from power-frequency faults.
Once the colder months start to make an appearance, so does your home's heating system. The AC unit temporarily becomes thing of the past but that doesn't mean it's long forgotten.
The history of electric light is well documented, [11] and with the developments in lighting technology the profession of lighting developed alongside it. The development of high-efficiency, low-cost fluorescent lamps led to a reliance on electric light and a uniform blanket approach to lighting, but the energy crisis of the 1970s required more design consideration and reinvigorated the use of ...
Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [ 2 ] [ 3 ] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC) . [ 4 ]
An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.
[citation needed] A common mnemonic electricians use to remember which wire goes to which terminal is "white to light…black to brass…green to green". [6] Phase wire in a circuit may be any color other than green, gray, or white (whether these are solid colors or stripes). The common colors are black, red, blue, brown, yellow, and orange ...