receptalces
- Thread starter van15
- Start date
- Status
ryan_618
Senior Member
- Location
- Salt Lake City, Utah
Re: receptalces
It is not addressed, nor should it be. The NEC is not a design manual, nor should it be. This is a design issue.
Mount them however you like.
I hope I'm not sounding mean, I don't mean to be.
It is not addressed, nor should it be. The NEC is not a design manual, nor should it be. This is a design issue.
Mount them however you like.
I hope I'm not sounding mean, I don't mean to be.
G
Guest
Guest
Re: receptalces
If there is an orientation label on the receptacle or receptacle cover it would be best policy to stick with that orientation.
Also, if a known device is going to have a right-angle factory plug on it, there may be an advantage to putting the receptacle ground up.
I put them ground down. It's owner's or installer's option-- unless it's called out in the specs; called out by a label; or called out by the manufacturer of a plug-in device.
If you go to the Leviton web site you will find that many of their illustrations show ground up.
I see more ground up called out or implemented on commercial jobs.
Ann Landers and Dear Abby get a similar question about how to hang the toilet tissue roll properly. Again, it's owners option
This is all just filler. Ryan answered the core of the question.
If there is an orientation label on the receptacle or receptacle cover it would be best policy to stick with that orientation.
Also, if a known device is going to have a right-angle factory plug on it, there may be an advantage to putting the receptacle ground up.
I put them ground down. It's owner's or installer's option-- unless it's called out in the specs; called out by a label; or called out by the manufacturer of a plug-in device.
If you go to the Leviton web site you will find that many of their illustrations show ground up.
I see more ground up called out or implemented on commercial jobs.
Ann Landers and Dear Abby get a similar question about how to hang the toilet tissue roll properly. Again, it's owners option
This is all just filler. Ryan answered the core of the question.
- Location
- Illinois
- Occupation
- retired electrician
Re: receptalces
Don
[ October 28, 2003, 08:18 AM: Message edited by: don_resqcapt19 ]
You need to look at the right angle plug. I've seen just as many that are the other way.
The information on the label or manufacturer's instructions are just recommendations. They are not "listing and labeling" instructions that are required to be followed by 110.3(B).
Don
[ October 28, 2003, 08:18 AM: Message edited by: don_resqcapt19 ]
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Re: receptalces
I have noticed (anyone else as well?) that a plug in device-flashlight, timer, controllers, are two I have, with the polarized blades, require ground down. It almost seems like a standard...I had to change the receptacle for our new washing machine that had a right angle factory plug to put the ground down, so the cord went down not up.
One we had a service call for tripped circuit breaker, a TVSS had "shorted out". Turns out a paper clip had fallen between the blades and shorted the circuit.
In the big scheme of things, ground up or down is not all that important, but for the most buildings its about all that shows of the electrical system that is mostly hidden.
I have noticed (anyone else as well?) that a plug in device-flashlight, timer, controllers, are two I have, with the polarized blades, require ground down. It almost seems like a standard...I had to change the receptacle for our new washing machine that had a right angle factory plug to put the ground down, so the cord went down not up.
One we had a service call for tripped circuit breaker, a TVSS had "shorted out". Turns out a paper clip had fallen between the blades and shorted the circuit.
In the big scheme of things, ground up or down is not all that important, but for the most buildings its about all that shows of the electrical system that is mostly hidden.
red
Member
- Location
- Connecticut
Re: receptalces
My concern with a ground up recept. is that if the plug starts to work loose the first thing that breaks away is the ground prong.
My concern with a ground up recept. is that if the plug starts to work loose the first thing that breaks away is the ground prong.
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: receptalces
That is a commonly stated concern. But it does not make a strong enough case to warrant creating an NEC requirement. By the time the ground plug has come out far enough from the wall to break contact, the other two prongs are almost out also, and it will be obvious to anyone walking by. The commonly stated opposing case (also a weak one) is that a paper clip (or other metal object) could strike the flat prongs and arc, but would not arc if the ground plug was up. There is no overriding safety concern from either orientation, and it is best left out of code space.
That is a commonly stated concern. But it does not make a strong enough case to warrant creating an NEC requirement. By the time the ground plug has come out far enough from the wall to break contact, the other two prongs are almost out also, and it will be obvious to anyone walking by. The commonly stated opposing case (also a weak one) is that a paper clip (or other metal object) could strike the flat prongs and arc, but would not arc if the ground plug was up. There is no overriding safety concern from either orientation, and it is best left out of code space.
bill addiss
Senior Member
Re: receptalces
If you look at a 3 prong plug you will see that the ground prong is longer than the other two, so I don't know if that could really even happen.
Bill
Red,
If you look at a 3 prong plug you will see that the ground prong is longer than the other two, so I don't know if that could really even happen.
Bill
brian john
Senior Member
- Location
- Leesburg, VA
Re: receptalces
BEEN HERE DONE THIS--------TO DEATH; I dare say AGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
[ October 30, 2003, 07:18 PM: Message edited by: don_resqcapt19 ]
BEEN HERE DONE THIS--------TO DEATH; I dare say AGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
[ October 30, 2003, 07:18 PM: Message edited by: don_resqcapt19 ]
Re: receptalces
Mount the recepticle ground down and someone will say "what is something slides down the wall and gets against the two prongs?" Mount it ground up and I am told the ground will disconnect first if it comes undone. I look at it if the yoke has writing stamped on it, I mount the recepticle so the words aren't upside down. If the words are readable both ways, I prefer the ground up. Had an old electrician tell me that way everything is electrically under ground. I really do think its mostly the owner, general contractor, or installers option.
Mount the recepticle ground down and someone will say "what is something slides down the wall and gets against the two prongs?" Mount it ground up and I am told the ground will disconnect first if it comes undone. I look at it if the yoke has writing stamped on it, I mount the recepticle so the words aren't upside down. If the words are readable both ways, I prefer the ground up. Had an old electrician tell me that way everything is electrically under ground. I really do think its mostly the owner, general contractor, or installers option.
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: receptalces
I guess trailer receptacles are the only receptacle that the NEC requires the grounding prong up? 550.10 even shows a image of this below the FPN
550.10
(C) Attachment Plug Cap. The attachment plug cap shall be a 3-pole, 4-wire, grounding type, rated
50 amperes, 125/250 volts with a configuration as shown in Figure 550.10(C) and intended for use with the 50-ampere, 125/250-volt receptacle configuration shown in Figure 550.10(C). It shall be listed, by itself or as part of a power-supply cord assembly, for the purpose and shall be molded to or installed on the flexible cord so that it is secured tightly to the cord at the point where the cord enters the attachment plug cap.
If a right-angle cap is used, the configuration shall be oriented so that the grounding member is farthest from the cord.
I guess trailer receptacles are the only receptacle that the NEC requires the grounding prong up? 550.10 even shows a image of this below the FPN
550.10
(C) Attachment Plug Cap. The attachment plug cap shall be a 3-pole, 4-wire, grounding type, rated
50 amperes, 125/250 volts with a configuration as shown in Figure 550.10(C) and intended for use with the 50-ampere, 125/250-volt receptacle configuration shown in Figure 550.10(C). It shall be listed, by itself or as part of a power-supply cord assembly, for the purpose and shall be molded to or installed on the flexible cord so that it is secured tightly to the cord at the point where the cord enters the attachment plug cap.
If a right-angle cap is used, the configuration shall be oriented so that the grounding member is farthest from the cord.
- Status