40

Such a fun question deserves an equally fun answer. Sure you can! And there's a neat trick that will help with all those troublesome NEC 2014/17 rules: simply make sure to build this house in a country where the NEC does not apply! Most of the world uses 230V as their standard supply voltage, which is pretty close, but if that's not quite enough for you, ...


38

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 ...


37

Several have mentioned The required 120v circuits include 2 small appliances for kitchen counters, 1 for the laundry, 1 for the bathroom(s). But I think the main problem you run into is 210.6. 210.6 Branch-Circuit Voltage Limitations. The nominal voltage of branch circuits shall not exceed the values permitted by 210.6(A) through (E). (A) Occupancy ...


29

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 ...


29

There are better ways A wide variety of reliable splice techniques now exist. The reason for soldering "back in the day" was that manufacturing wasn't really up to making "wire nuts" and "Alumiconns" in billion quantity. And labor was a lot cheaper. Today, it would be nuts to use that technique, but I wouldn't condemn old work that has stood the test of ...


28

The "best way" is to replace all the damaged wire. Either completely (from where it starts and ends now) or by adding two junction boxes (which must remain accessible) where you can join the undamaged parts of the wire to new undamaged wire between the two junction boxes. If you can reach one end with new wire, you may only need one new junction ...


25

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 ...


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

Adding the short wire is called pigtails and it is code compliant so yes you can do this. Pigtails are a superior way of making connections in my opinion. The pigtails do not add to the wire volume in the box.


22

In the US, most places are subject to the NEC, here is article 110.14(B): (B) Splices. Conductors shall be spliced or joined with splicing devices identified for the use or by brazing, welding, or soldering with a fusible metal or alloy. Soldered splices shall first be spliced or joined so as to be mechanically and electrically ...


22

The most important rule in NEC is 110.3(B), which requires you to follow labeling and instructions... which means read them. In this case, that only makes things better, particularly the boldface in 4a and 4b. These explain how to use Leviton's "back-wire" feature, which allows placing 2 wires under each screw. Pay heed to the word "FIRMLY&...


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 ...


19

Green wire is perfectly legit. If you are really lazy or in a hurry you can even get pre-cut pre-stripped green grounding pigtails ready to go. Ground is the only thing it can be used for, but "green or bare" is fine for ground nearly everywhere (I think there are some hot tub/pool specific cases where green is required and bare is not OK, but I ...


18

Nonmetallic-Sheathed Cable The Answer According to the National Electrical Code, you can have 4 12/2 nonmetallic sheathed cables through a single bored hole that is fire- or draft-stopped using thermal insulation, caulk, or sealing foam, or where proper spacing is not maintained for more that 24 in. If you maintain proper cable spacing (which is defined by ...


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.


17

A private buyer's inspector can write whatever they want. Some have a reputation for being minimalistic that gets them referrals from selling agents, some have a reputation for being "tigers" that gets them referrals from buyers who pride in waving 30 pages of "problems" at the seller. Some will highlight minor issues if there aren't ...


16

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 exposed ...


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 ...


14

Do you need actual outlets? Chargers and lights can both be run off of USB, and a USB hub+extension cables doesn't even involve real wiring. It also works in both 120V and 240V countries with just a plug adapter as long as you get a 120/240V hub, which could be an issue if you just use regular outlets. I'm not sure there's any legal concerns, because you're ...


14

All splices (except for the Tyco splice mentioned in kg333's answer) must be made inside junction boxes. The whole junction box cover must remain accessible forever without needing tools to disassemble the building in any way (but unlike a subpanel it does not require 'working space maintained 24x7). The undamaged cable must enter the junction box via a ...


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 comply with 406.4(D)...


13

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

Their insurance may lean that way. Rates are probably lower if they are not selling to end-users. They may also not have to deal with sales tax, if they are not selling to end-users. As for the (or more) economic incentive many take for granted: the cost of customer service. The below consumes valuable man-hours and to staff this could double payroll: They ...


12

Conduit (RMC, IMC or EMT) is an NEC-accepted ground path. So, if the wires are in steel conduit, no OTHER ground wire is required. If that gives you concerns, you might find this link reporting research into the effectiveness of conduit as a ground relieves them. Updated link to NEMA Technical Services Department Bulletin 97.


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

If you search this on the internet you will find the fixture can be disassembled and the j-box can be accessed through the hole that the fixture is in. Therefore the joints are still accessible. Like here. If you bury a box under drywall it does not meet the definition of accessible according the Code since you would have to remove a portion of the building ...


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