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// CODE SNIPPET

E3908.14 Connecting Receptacle Grounding Terminal to Box

2015 Michigan Residential Code > 39 Power and Lighting Distribution > E3908 Grounding > E3908.14 Connecting Receptacle Grounding Terminal to Box
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An equipment bonding jumper, sized in accordance with Table E3908. 12 based on the rating of the overcurrent device protecting the circuit conductors, shall be used to connect the grounding terminal of a grounding-type receptacle to a grounded box except where grounded in accordance with one of the following: (250.146)

  1. Surface mounted box.Where the box is mounted on the surface, direct metal-to-metal contact between the device yoke and the box shall be permitted to ground the receptacle to the box. At least one of the insulating washers shall be removed from receptacles that do not have a contact yoke or device designed and listed to be used in conjunction with the supporting screws to establish the grounding circuit between the device yoke and flush-type boxes. This provision shall not apply to cover-mounted receptacles except where the box and cover combination are listed as providing satisfactory ground continuity between the box and the receptacle. A listed exposed work cover shall be considered to be the grounding and bonding means where the device is attached to the cover with at least two fasteners that are permanent, such as a rivet or have a thread locking or screw locking means and where the cover mounting holes are located on a flat non-raised portion of the cover. [250.146(A)]
  2. Contact devices or yokes. Contact devices or yokes designed and listed for the purpose shall be permitted in conjunction with the supporting screws to establish equipment bonding between the device yoke and flush-type boxes. [250.146(B)]
  3. Floor boxes.The receptacle is installed in a floor box designed for and listed as providing satisfactory ground continuity between the box and the device. [250.146(C)]

Related Code Sections


E3908.14 Power and Lighting Distribution, Connecting Receptacle Grounding Terminal to Box
, shall be used to connect the grounding terminal of a grounding-type receptacle to a grounded box except where grounded in accordance with one ...
2015 Michigan Residential Code > 39 Power and Lighting Distribution > E3908 Grounding > E3908.14 Connecting Receptacle Grounding Terminal to Box
E3406.11 General Requirements, Splices
shall not be dependent on connection to devices such as receptacles and lampholders. The arrangement of grounding connections shall ...
2015 Michigan Residential Code > 34 General Requirements > E3406 Electrical Conductors and Connections > E3406.11 Splices
Section E4002 Devices and Luminaires, Receptacles
Receptacles installed on 15- and 20-ampere-rated branch circuits shall be of the grounding type and connected ...
2015 Michigan Residential Code > 40 Devices and Luminaires > E4002 Receptacles
E3407.4.2 General Requirements, Receptacles, Plugs and Connectors
Receptacles, polarized attachment plugs and cord connectors for plugs and polarized plugs shall have the terminal intended for connection ...
2015 Michigan Residential Code > 34 General Requirements > E3407 Conductor and Terminal Identification > E3407.4 Identification of Terminals > E3407.4.2 Receptacles, Plugs and Connectors
E4206.9.4 Swimming Pools, Grounding Terminals
Junction boxes, transformer and power supply enclosures, and ground-fault circuit- interrupter enclosures connected to a conduit that extends ...
2015 Michigan Residential Code > 42 Swimming Pools > E4206 Equipment Installation > E4206.9 Junction Boxes and Enclosures for Transformers or Ground-Fault Circuit Interrupters > E4206.9.4 Grounding Terminals
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