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36

There are quite a few reasons to use a single receptacle instead of a duplex receptacle. A few that I know of: Recessed for clock or behind a TV. In this case, it is sometimes easier to use with one centered receptacle instead of top or bottom of a duplex receptacle. Air conditioning, range, dryer or other larger-than-usual circuit (in the US, this means ...


28

NEC 2008 210.21 Outlet Devices. Outlet devices shall have an ampere rating that is not less than the load to be served and shall comply with 210.21(A) and (B). (B) Receptacles (1) Single Receptacle on an Individual Branch Circuit. A single receptacle installed on an individual branch circuit shall have an ampere rating not less than that of ...


28

Single receptacles are used for reasons Nobody installs one of these by mistake - they're a lot more expensive, to start with! When you find one, it has a specific purpose for being there because of a Code requirement for its application. It may be in a place where GFCI protection is required, but it is appropriate for this individual load to not be GFCI ...


24

Double Taps With most devices you can only have one wire per screw terminal, however, some breakers do support multiple wires under terminals. If the device allows multiple taps, it must be listed for the purpose. NEC 2008 110.14 Electrical Connections. (A) Terminals. Connection of conductors to terminal parts shall ensure a thoroughly good ...


24

I will give you an honest answer and could care less about the upvotes/downvotes. Just my experience flipping houses in many US areas and even some overseas over 25 years. First every municipality will have a detailed list of things they require a permit for. almost all places require you to pull a permit for electrical if you pull an electrical permit ...


23

No, it's not ok. For one thing, by the time the city inspector looks at the fully framed building, it will be a little too late to fix it. Secondly, the builder's attitude seems very questionable. Either his framing crew or the concrete sub messed up. At the very least their job is not done in a workmanlike manner. They shouldn't wait and hope things 'slip' ...


23

If you are not removing more drywall than needed for the new recessed lights, then no per 334.30(B)(1) (assuming you are using NM cable). There are similar clauses for other flexible cable assemblies (e.g. AC/MC). However, if you are removing drywall as part of the remodel and have access to the studs, then you do need to secure and support according the ...


21

Not only will you need to get your local inspector's approval, in writing (and the inspector will defer to Underwriter's Laboratories or other NRTL, so we're talking about getting a UL listing for your one-off) ... ... But all your thermostat wiring must now be re-done in Class I wiring methods Because you are intermixing thermostat control power with ...


20

No. It's all or nothing. Imagine a visually-impaired person (or someone in the dark) coming down your stairs and the rail ends. What's the assumption? That they've reached the bottom. That can end badly.


19

All connections must be in a junction box. They're mentioned several times in the instruction manual. Pull the wire through the hole and into the junction box (not included). Using a quick connector, secure 120 VAC house wiring from the wall switch to the fan as shown in the wiring diagram on page 3. It is odd that this model doesn't provide an ...


18

I was curious so I just did some googling around and it seems that, if anything, some lenders might require a closet for a room to be included in the bedroom count for the house. I imagine this might be to help ensure consistency in home valuations. Check the first few results here for more info. Code does require a bedroom have an egress window however. ...


17

There is one safety issue here It appears that the original installer took the ground wire from the 12/3 cable, looped it around one switch ground screw, then attached it to the other switch ground screw. This grounds the switch yokes fine, but leaves the (metal) box ungrounded save through screw threads. The solution to this is to cut off the existing ...


17

In general, the NEC (or any other code for that matter) specifies how the work must be done, but does not touch on who the work must be done by. The who is covered by local statutes (whether city, county, or state). Permits and licenses are entirely state, county, or city constructs, and various jurisdictions utilize different versions of the NEC.


16

Looking in 2011 National Electric Code Changes of Interest, they reference NFPA 90A-2009 : Section 4.3.4 of NFPA 90A-2009 states that “Wiring shall not be installed in air ducts” unless it is “directly associated with the air distribution system and does not exceed 1.22m (4 ft).” I don't have access to the full code, but just in the notes on the ...


15

Yes, you can use larger wire. However if you are putting in a junction box it must remain accessible. That means you cannot cover it with drywall or hide it behind anything.


15

The use of these devices is limited to specific situations, which are described in 334.40(B) of the National Electrical Code. The 2011 version of the code had this to say. National Electrical Code 2011 334.40(B) Devices of Insulating Materials. Switch, outlet, and tap devices of insulating material shall be permitted to be used without boxes in ...


15

You are correct in assuming there should not be any live connections exposed in any situation. I suppose it should be said that this is a dangerous situation and could be fixed fairly easy with a set of wire cutters and some appropriate wire nuts. So call the installer and see if they want to make the repair. If they give you any static I would report it to ...


14

Short answer: Inspectors can't be everywhere, see everything, and probably have enough other work. I speak as municipal inspector for a smaller city in the Midwestern US. For you average DIYer who is working on their own, owner-occupied home, I don't lose too much sleep if they extend a branch circuit on the weekend. Even I have moved my washer and dryer ...


13

A sub panel must have the neutral and ground isolated. Panels come with a very long, rather thick (about 1/4 x 20) green bonding screw that connects the neutral bar to the can in the case of a primary panel. You don't get a neutral from your utility, you create one with that bonding screw. Sub panels should be fed with 3 insulated conductors of appropriate ...


13

According to the National Electrical code, you have a few options. Depending on the situation, there are a few code sections to pay attention to. National Electrical Code 2014 Article 406 - Receptacles, Cord Connectors, and Attachment Plugs (Caps) 406.4 General Installation Requirements. (D) Replacements. Replacement of receptacles shall ...


12

Per the wording of that code, you can't be adding anything to the floor or the ceiling as you'll be under the 7' minimum. You could consider a super-thin flooring (stain the concrete? Linoleum?) and then, as you suggest, put the sheetrock between the joists (though that sounds like a finishing nightmare). Alternatively, raise the foundation (likely cost ...


12

National Electrical Code 2008 300.22 Wiring in Ducts, Plenums, and Other Air-Handling Spaces. (B) Ducts or Plenums Used for Environmental Air. Only wiring methods consisting of Type MI cable, Type MC cable employing a smooth or corrugated impervious metal sheath without an overall nonmetallic covering, electrical metallic tubing, flexible metallic ...


12

OK this is easy. The answer is NO. The construction has issues: There are no bolts for the sill plates. 2.The sill plates should be spaced on the slab so that wall plus exterior finish meets slab. It looks like this house is getting brick or thick stone given the 3 inches or so from the edge. I am not sure about your situation. You are having a ...


12

Grounding conductors are designed to only carry fault current, which is typically a very short burst of very high current. Neutral conductors carry circuit current, which means they go through heat/cool expansion/contraction cycles. Multiple neutrals under one screw can lead to loose terminals due to different rates and levels of expansion and contraction.


12

In the cases where I've run I to something like this, the hotel originally had open walkways around the rooms -- allowing more light in, and probably cheaper to build -- which were later closed off with an outside wall to provide a sheltered approach to the rooms and to reduce energy needed to heat or cool the rooms. The windows were left in place because ...


12

I see several misconceptions, and a general sense of authoritarianism (the government being a "big brother" there to protect citizens from their own mistakes, prohibiting by default, only reluctantly authorizing). in an area where permits (only offered to licensed pros) are required. outright doing it themselves illegally First, permits are ...


11

I don't like it since it risks potential confusion in the future as to whether the circuit could be upgraded to 30amps, but if you're going to do it, use the 10g wire at the end of the run and not at the breaker panel where the mistake would be easier to make.


11

I will not speak to the code issue as other already have. But, I did use them when building my new home a few years ago and, for me, they passed inspection. While the package does say they can be used for stranded wire, I did not find that they worked that easily with stranded wire (I was using some computer controlled switches with pigtails instead of ...


11

I couldn't find a solid source that says a closet is Required, to make a room a bedroom. It seems to depend more on the agency listing the property, and the mortgage company financing the sale of said property. The only requirement I could find dealing with bedrooms from the Federal Housing Administration (FHA), was that an emergency exit is required. ...


11

Overcurrent protection devices must be Readily Accessible. The NEC defines Accessible as... Accessible (as applied to equipment). Admitting close approach; not guarded by locked doors, elevation, or other effective means Accessible (as applied to wiring methods). Capable of being removed or exposed without damaging the building structure or finish or ...


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