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Posted By: HotLine1 A Tamper Resistant Brain Teaser - 07/17/09 02:55 AM
From 2008 NEC:

"406.11 Tamper-Resistant Receptacles in Dwelling Units.
In all areas specified in 210.52, all 125-volt, 15- and 20-ampere receptacles shall be listed tamper-resistant receptacles."

Now...

What say you regarding a L5-15 or L5-20 twistlock installed inside a resi?


Posted By: electure Re: A Tamper Resistant Brain Teaser - 07/17/09 03:05 AM

bash clap

I'd say that it effectively prohibits Twistlocks in resi.



Posted By: EV607797 Re: A Tamper Resistant Brain Teaser - 07/17/09 03:05 AM
I'm an electrical geek and I have a few Twistlock receptacles in my house for battery backup system connections. I guess I won't be allowed to do that anymore! cry
Posted By: sparkyinak Re: A Tamper Resistant Brain Teaser - 07/21/09 02:56 AM
As an inspector, I would ask, "What are they needed for?" The only UPS's I know are are commerical grade UPS units you would find in an IT room. Even the ones used at my office have just a standand NEMA 5-15 plug. If it is needed for a home office then the dwelling can become a mixed occupancy. This is a double edge swords since mixed occupancies must meet other code requirements too. Such as floor loading, fire protection, etc. If someone were to go this route best be up on their local appicable codes.
Posted By: gfretwell Re: A Tamper Resistant Brain Teaser - 07/21/09 03:35 AM
If they are in addition to the ones specified by 210.52 it is not clear they have to be T/R.

Quote
406.11 Tamper-Resistant Receptacles in Dwelling Units.
In all areas specified in 210.52, all 125-volt, 15- and 20-ampere receptacles shall be listed tamper-resistant receptacles.



You have to be careful how you answer that or we will be looking for a T/R twist lock for the A/G pool pump.
Posted By: HotLine1 Re: A Tamper Resistant Brain Teaser - 07/21/09 03:50 AM
Greg:

'...in all areas specified....' NOT '....to the ones specified.....'
Good thought, but not exactly what the book says.


SparkyinAK:

As an inspector...I can't ask 'what are they needed for'. BTW, this is a theoretical brain teaser.

Posted By: gfretwell Re: A Tamper Resistant Brain Teaser - 07/21/09 06:12 AM
I just don't like the way 406.11 is worded I guess.
"outdoors" is "specified" in 210,52(E) but it doesn't apply to all receptacles outdoors.
If it doesn't apply to the receptacle on a pool pump outdoors, why would it apply to a receptacle indoors that is not specified in 210.52,

Quote
210.52 Dwelling Unit Receptacle Outlets.
This section provides requirements for 125-volt, 15- and 20-ampere receptacle outlets. The receptacles required by this section shall be in addition to any receptacle that is:
(1) Part of a luminaire or appliance, or
(2) Controlled by a wall switch in accordance with 210.70(A)(1), Exception No. 1, or
(3) Located within cabinets or cupboards, or
(4) Located more than 1.7 m (51/2 ft) above the floor


Since these are not specified in 210.52 are they exempt?
Posted By: HotLine1 Re: A Tamper Resistant Brain Teaser - 07/21/09 07:15 PM
Greg:
IMHO, 210.52 is the 'required' receptacle outlets, detailing required spacing, locations, etc. Basically, the code required minimums.

Yes, 406.11 wording is not liked by a few people.



Posted By: gfretwell Re: A Tamper Resistant Brain Teaser - 07/21/09 10:16 PM
That was my point. If a receptacle is not one of the ones required by 210.52 is it required to be TR?
The examples would be the ones I referenced in the first paragraph of 210.52 that are "in addition" to the ones "specified" in 201.52.
That would certainly exempt the garage door receptacle for example. Also I doubt you would have to use TR in the appliance garage. The real question left open is the switch controlled lighting outlets.

Do the manufacturers have TR receptacles in baseboard heaters?
Posted By: HotLine1 Re: A Tamper Resistant Brain Teaser - 07/21/09 11:47 PM
Greg:

Commentary at CEU course on '08 changes leaned toward the word 'all' for TR recept's.

Discussing this here with you has me thinking about the commentary that was part of the changes presentation materials.

We (NJ) have until 10/1/09 to get our 'act' together on a few items, this being one.

I'm going into this with an open mind, and now...going to dig out the 'changes' commentary that we used....hopefully it's in my files, not 'loaned' & never returned!

As to the BB htrs.....more food for thought.

Posted By: gfretwell Re: A Tamper Resistant Brain Teaser - 07/23/09 06:42 PM
I kicked this off in the IAEI forum and was pointed to the 2011 ROP.
They seemed to have fixed most of the concerns.

Quote
406.12 Tamper-Resistant Receptacles for Dwelling
Units. In all areas specified in 210.52, all nonlocking type
125-volt, 15- and 20-ampere receptacles shall be listed
tamper-resistant receptacles. [ROP 18-62, 18-68]
Exception No. 1: Receptacles located more than 1.7 m
(51⁄2 ft) above the floor. [ROP 18-71]
Exception No. 2: Receptacles that are part of a luminaire
or appliance. [ROP 18-71]
Exception No. 3: A single receptacle or a duplex receptacle
for two appliances located within dedicated space for
each appliance that in normal use is not easily moved from
one place to another and that is cord-and-plug connected
in accordance with 400.7(A)(6), (A)(7), or (A)(8). [ROP
18-71]
Exception No. 4: Nongrounding receptacles used for replacements
as permitted in 406.4(D)(2)(a). [ROP 18-82]
Posted By: HotLine1 Re: A Tamper Resistant Brain Teaser - 07/23/09 07:50 PM
Greg:
The above verbage will clear up a lot come '11
Posted By: Lostazhell Re: A Tamper Resistant Brain Teaser - 10/10/09 05:01 AM
So for the old lady that can't get a plug into a TR, I can install an L5-20 & give her a pigtail come 2011? laugh laugh
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