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Orange hospital oulets
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wrote: Everytime I visit some one in a hospital or nursing home, or go into a doctors office I see orange colored outlets lately. I know this is a special grade of outlet made for medical use. What I do not know is what is special about them? Are they just made more durable, or do they contain some sort of special protection such as a GFCI (no push buttons on them). Orange outlets are Isolated Ground (IG), meaning that the ground pins on the outlets are isolated from the mounting yoke. They are used for equipment that may be sensitive to stray currents on the ground wire, such as computers and medical equipment. They will normally be wired with a dedicated ground wire back to the ground bus in the panel, known as Star Grounding. The idea is that the grounds are tied together at a single location, with a single ground path, in order to reduce noise induced on the ground bus. IG outlets are designated by a triangle on the face of the outlet, and are normally orange in color, but not always. IG outlets are not always Hospital Grade, which is a separate rating, but are generally at least Commercial Grade, if not Specification Grade. Hospital Grade outlets are designated by a green dot on the face, and may, but are not required to be IG. You may also see blue outlets, which are frequently Surge Protection, or yellow outlets, which are normally Corrosion Resistant. The Surge Protection outlets may also be IG. Other colors generally have no special meaning, although you sometimes see red used for emergency power circuits. -- -- Welcome My Son, Welcome To The Machine -- Bob Vaughan | techie @ tantivy.net | | P.O. Box 19792, Stanford, Ca 94309 | -- I am Me, I am only Me, And no one else is Me, What could be simpler? -- |
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