Trap question

mathew stouffer · 08-04-2009, 08:40 AM

In addition to the missing vent, what is the min lenght requirement for the line behind the trap, preventing it from being an S trap.

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Randy Cooper · 08-04-2009, 04:30 PM

Are you referring to the trap arm length?

Check out the electrical receptacle on its back; the NEC prohibits receptacles from facing up in wet locations.

**Billy Stephens** · 08-04-2009, 04:47 PM

Originally Posted by mathew stouffer

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requirement for the line behind the trap, preventing it from being an S trap.

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Snagged this off this site ( can't remember who posted it.)

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mathew stouffer · 08-04-2009, 05:19 PM

Yes the trap arm. And I called out the outlet, although the electricians response was the area is not wet.

**Jerry Peck** · 08-04-2009, 06:53 PM

Originally Posted by Randy Cooper

Check out the electrical receptacle on its back; the NEC prohibits receptacles from facing up in wet locations.

They do?

The NEC prohibits receptacles from facing up in kitchen and bathroom countertops, besides, that is not a "wet location".

The NEC allows FLOOR receptacle to face up. Every seen anyone MOP a floor? I have.

**Jerry Peck** · 08-04-2009, 07:06 PM

Originally Posted by mathew stouffer

In addition to the missing vent, what is the min length requirement for the line behind the trap, preventing it from being an S trap.

"preventing it from being an S trap"

The only thing which will prevent it from being an 'S' trap is a vent.

As I recall, though, there is a minimum trap arm length of 2 times the diameter of the pipe. That would be from the trap weir to the vent.

mathew stouffer · 08-04-2009, 11:29 PM

Thanks Jerry for answering the question.

Randy Cooper · 08-05-2009, 04:22 PM

Originally Posted by Jerry Peck

They do?

The NEC prohibits receptacles from facing up in kitchen and bathroom countertops, besides, that is not a "wet location".

The NEC allows FLOOR receptacle to face up. Every seen anyone MOP a floor? I have.

Yes Jerry,
The NEC does prohibit recepticals from facing up in a wet location, I think I said that. I never called the space under a lav a wet location. I said "check out that receptical on its back" inferring a judgment call. Sorry for any confusion. As far as mopping floors, a floor receptical box is listed for that use. A 4x4 steel box I doubt, would be listed at all; especaily in that location. Again a judgment call. Besides, our Electrical Specialist said: "no way Jose" and his name is Jose too!