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  2. HD Supply - Wikipedia

    en.wikipedia.org/wiki/HD_Supply

    The company was founded in 1974 as Maintenance Warehouse in San Diego, CA. In 1997, The Home Depot purchased Maintenance Warehouse with its dedicated delivery trucks and free delivery service. In 2004, Maintenance Warehouse changed its name to HD Supply. In January 2006, Home Depot announced that it was acquiring Hughes Supply in a $3.2 billion ...

  3. The Home Depot Pro - Wikipedia

    en.wikipedia.org/wiki/The_Home_Depot_Pro

    The Home Depot Pro Multifamily first began as Wilmar Supply Company in 1978 by William Green and Martin Green in Collingswood, New Jersey as a hardware store. Wilmar expanded its retail business by selling MRO products to apartment complexes and multi-family housing.

  4. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    EMS-1 (The ITEC Electronic Modular Switch is an electronic direct control switching system. The modules are combined to form a complete switch or any of the modules can be added to your present Step-by-Step Systems.) EMS-2 (The EMS-2 RURAL SWITCH is a stored program control analog switch designed to be cost-effective in small exchanges.

  5. Aluminum building wiring - Wikipedia

    en.wikipedia.org/wiki/Aluminum_building_wiring

    In North American residential construction, aluminum wire was used for wiring entire houses for a short time from the 1960s to the mid-1970s during a period of high copper prices. Electrical devices (outlets, switches, lighting, fans, etc.) at the time were not designed with the particular properties of the aluminum wire being used in mind, and ...

  6. Pull switch - Wikipedia

    en.wikipedia.org/wiki/Pull_switch

    The ceiling fan and mechanical wall fans are also appliances often operated by pull switches. Pull switches may be either two-position (open or closed) or multi-position (allowing for different fan speeds or levels of illumination). Mounted inside a pull switch, there could be two types of two-position toggle switches.

  7. Conveyor system - Wikipedia

    en.wikipedia.org/wiki/Conveyor_system

    A conveyor system is often the lifeline to a company's ability to effectively move its product in a timely fashion. The steps that a company can take to ensure that it performs at peak capacity, include regular inspections and system audits, close monitoring of motors and reducers, keeping key parts in stock, and proper training of personnel.

  8. Switchgear - Wikipedia

    en.wikipedia.org/wiki/Switchgear

    High-voltage switchgear A section of a large switchgear panel. Tram switchgear This circuit breaker uses both SF 6 and air as insulation.. In an electric power system, a switchgear is composed of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment.

  9. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.