NEMA 5-15 grounded (Type B)[edit]
NEMA 5-15 plug, left. "Decora"-style duplex socket, with orientation as specified in NECA 130-2010, centre. Ordinary duplex socket, with orientation typically found, right. Photos are different scale – parallel blades are on 1/2-inch (12.7 mm) centres.
The NEMA 5-15 plug has two flat parallel blades like NEMA 1-15, and a ground (earth) pin.
[39] It is rated 15 A at 125 volts. The ground pin is longer than the line and neutral blades, so the device is grounded before the power is connected. Both current-carrying blades on grounding plugs are normally narrow, since the ground pin enforces polarity. The
National Electrical Contractors Association's National Electrical Installation Standards (NECA 130-2010) recommends that sockets are mounted with the ground hole up so that a falling object makes first contact with the ground pin.
This socket is recommended in IEC standard 60906-2 for 120-volt 60 Hz installations.
In many areas,[
where?] tamper-resistant sockets are now required in new residential construction, with shutters to prevent contact by objects inserted into the socket.
[40]
In
stage lighting, this connector is sometimes known as
PBG for
Parallel Blade with Ground,
Edison or
Hubbell, the name of a common manufacturer.
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