![]() ![]() DURALO® is a trademark identifying a tri-coat protective finish used on iron electrical conduit fittings for standard and hazardous locations. Or, take your outlet spacers and fold them until they are thick enough to cover. GLOSSARY OF ELECTRICAL INDUSTRY TERMS DUPLEX RECEPTACLE Electrical outlet device having two plug receptacles. Once there, click on their link to free access to the 2017 NEC ® edition of NFPA 70. Screw the outlet plug(s) to the extender/shimming plate and electrical box. See the actual NEC ® text at NFPA.ORG for the complete code section. Electrical Receptacle Box Extension Ring extends receptacles or switch boxes flush with a newly installed wall surface such as tile, wainscott or drywall. ![]() Nonmetallic barriers that are not marked with their volume are considered to have a cubic inch volume of 1 inch.īelow is a preview of Article 314. Metal barriers that are not marked with their volume are now considered to have a cubic inch volume of ½ inch. If the circuit wires prove to be too short for the extended depth created by the extender, you can attach pigtail. Usually, you can slide the extender over the switch or receptacle without disconnecting the circuit wires. Some barriers are already marked with their volume to indicate how much space they take up inside the box while other barriers are not. Slip the box extender over the device and slide it into the electrical box. Now, in the 2017 NEC, a divider or barrier inside a box must be counted since it takes up space inside the box. 5 43 / each Free Shipping over 35 0 at Check Nearby Stores Add To Cart Compare Iberville Adjustable bar hanger from 10-1/2 in. Section 314.16 provides rules on calculating box fill and includes an allowance for conductors, devices, internal cable clamps and support fittings but has never required a specific allowance for a fixed barrier installed inside the box. Similar language for receptacles is found in 406.5(J). Section 404.8(B) states that a snap switch shall not be grouped or ganged in enclosures with other snap switches, receptacles, or similar devices, unless they are arranged so that the voltage between adjacent devices does not exceed 300 volts, or unless they are installed in enclosures equipped with identified, securely installed barriers between adjacent devices. Sometimes the code requires a barrier inside a junction or device box. Manufacturer: Eaton / Crouse Hinds Catalog TP494 Cooper Electric Part 19495. Additionally, plaster rings work as trim fasteners. These are set into ceilings made from plaster to serve as a depth guide. Code Change Summary: Code language was added to address box volume for a fixed barrier inside a box. Crouse-Hinds TP494 Steel 2-Device 4 Square Outlet Box Flat Mud Ring. According to Encyclopedia2, the plaster ring is cylindrical and made of metal. ![]()
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