![installing recptacles to plaster ring installing recptacles to plaster ring](https://2.bp.blogspot.com/-Uc8BlunRO0k/VYXhTNhFSjI/AAAAAAAABow/9xInJ2lIKZI/s1600/Ring%2BVideo%2BDoorbell%2BInstall-1118.jpg)
This separate insulated equipment-grounding conductor is permitted to pass through without any connection to the box. Section 250.146(D) still requires the receptacle-grounding terminal to be grounded to a separate insulated equipment-grounding run with the circuit conductors. By installing an isolated-ground receptacle, the electrical noise path is interrupted and cannot be coupled into sensitive electronic equipment. This noise is then connected through the box, the metal plaster ring and the metal yoke of the receptacle into the grounding connection. In addition, Section 250.146(D) permits this isolation as a means to reduce electrical noise that may cause electromagnetic interference on sensitive electronic equipment.Įlectrical noise is often introduced into an electrical circuit and, thus, into the equipment through capacitive and inductive coupling into the metal raceway enclosing the circuit. This effectively isolates the grounding terminals of the receptacle from any contact with the metal plaster ring mounted to the metal box and the metal raceway or separate equipment-grounding conductor attached to the box. The IG receptacles covered in 517.16 consist of a receptacle with the metal yoke of the receptacle isolated from the grounding screw of the receptacle.
![installing recptacles to plaster ring installing recptacles to plaster ring](https://img.auctiva.com/imgdata/7/2/7/6/3/6/webimg/1047123095_tp.jpg)
Section 517.16 in Part II covers receptacles with insulated-grounding terminals and seems to permit isolated ground (IG) receptacles in a general or critical patient care area. However, there is at least one section within Part II that should not be used in a patient care area. Part II of Article 517 provides the requirements for wiring and protection in healthcare facilities and is applicable to all patient care areas.
![installing recptacles to plaster ring installing recptacles to plaster ring](https://img-aws.ehowcdn.com/877x500p/cpi.studiod.com/www_ehow_com/i.ehow.com/images/a06/v8/fs/install-electrical-outlet-plaster-wall-800x800.jpg)
#INSTALLING RECPTACLES TO PLASTER RING CODE#
Article 517 in the National Electrical Code (NEC) applies to electrical construction and installation criteria in healthcare facilities.