Minuteman
Senior Member
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- The Sooner Nation
Came in a conversation today, but does anyone know which code cycle the ground wired receptacles came about? Was it the same cycle as NM with ground?
Which code cycle brought 3 wire outlets?
- Thread starter Minuteman
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Minuteman
Senior Member
- Location
- The Sooner Nation
Required Ken, if you know.
1975. And that was only for 15- and 20-a receps.
Minuteman
Senior Member
- Location
- The Sooner Nation
1975.
You are awsome!
Minuteman
Senior Member
- Location
- The Sooner Nation
Just curious, when where they first allowed?
At least back to 1937. The numbering system changed radically 'twixt the '35 and '37, so I can't easily trace it back further than that.
walkerj
Senior Member
- Location
- Baton Rouge
In the 1933 NEC, the best I can find is:
908.j. Portable equipment may be grounded in one of the three following ways:
1. By means of the metal enclosure of the conductors feeding such equipment, provided an approved multi-prong plug or equivalent is used, one prong for the purpose of grounding the metal enclosure.
2. By means of a grounding conductor run with the circuit conductor in wire assemblies, provided an approved multi-prong plug or equivalent is used, one prong for the purpose of connecting such grounding conductor the grounded conduit or armored cable system.
3. By means of a separate flexible wire or strap, insulated or bare, protected as well as pricticable against mechanical injury.
908.j. Portable equipment may be grounded in one of the three following ways:
1. By means of the metal enclosure of the conductors feeding such equipment, provided an approved multi-prong plug or equivalent is used, one prong for the purpose of grounding the metal enclosure.
2. By means of a grounding conductor run with the circuit conductor in wire assemblies, provided an approved multi-prong plug or equivalent is used, one prong for the purpose of connecting such grounding conductor the grounded conduit or armored cable system.
3. By means of a separate flexible wire or strap, insulated or bare, protected as well as pricticable against mechanical injury.
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Minuteman
Senior Member
- Location
- The Sooner Nation
Ken you are da man.
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