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Regulations may require two separate means of exit from a room where the power rating of circuits exceeds some threshold, to allow for quick exit in an emergency. [2] Rooms containing oil-filled equipment may be required to have fire-resistant construction or active fire suppression equipment in the room and may be designated as an electrical ...
In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location.A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room.
When we decorate our homes, we think of colors and textures first, but we may be missing out on another key sense: Scents can seriously elevate the design of your home. According to Garcelle ...
A gas-filled tube can also be used as a shunt, particularly in a lightning arrester. Neon , like other noble gases , has a high breakdown voltage , so that normally current will not flow across it. However, a direct lightning strike (such as on a radio tower antenna ) will cause the shunt to arc and conduct the massive amount of electricity to ...
More complex HVAC systems can interface to Building Automation System (BAS) to allow the building owners to have more control over the heating or cooling units. [3] The building owner can monitor the system and respond to alarms generated by the system from local or remote locations.
A sail switch, vane switch or flow switch is a mechanical switch that is actuated on or off in response to the flow or non-flow of a fluid such as air or water. [1] A sail switch typically operates through the use of a paddle or a diaphragm which gets displaced due to the force of fluid or air moving past it.
Submeters can measure use of a single panel, or multiple points within a panel system using single-point, multi-point, and branch circuit submeters. [9] The latest [clarification needed] trend in submetering is Automatic Meter Reading, or AMR. This technology is used to get from meter reading to billing by an automated electronic means.
These two sections are sometimes replaced by a combination section, which is a section that can fulfill the roles of both of the aforementioned sections. [1] Switchboards can also sometimes come with an auxiliary section that is used to house devices that cannot be housed in the same section as other devices.