Questions tagged [code-compliance]

For questions relating to compliance with laws and ordinances of federal, state/province and local jurisdictions. Questions should also be tagged with the specific area of construction involved.

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24 views

LED drivers and Ontario Electrical Code

I'm doing a new build and I'm interested in using the inexpensive LED lights that use an external driver box. My question is about code - what's the way to mount the driver so it's acceptable to an ...
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Repurposing smoke detector power as fixture power

I removed a wired smoke detector and replaced it with a popular wifi-enabled battery-powered model. I'm left with a box that has: a black wire a white wire a red wire a ground I'm assuming the ...
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2answers
95 views

Grounding 3 wires to electrical box with 2 ground screws

I've installed a metal electrical box. There are 3 cables coming into the box. The standard box only has 2 ground screws. My inspector said I am supposed to have 1 single ground per screw... So, how ...
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Code question about wye and 90 degree elbow

Can a 90 degree elbow be placed right next to a Wye? The toilet drains into main branch by a wye. It immediately goes into a 90 elbow to drop the main branch down to the sewer.
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1answer
23 views

One isolating valve on both loft tanks inputs?

Just after the mains stopcock under my kitchen sink there is a tee, one pipe to drinkable water+washing machine and the other to the loft cisterns. ( This is an open vented pumped S-plan system, ...
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2answers
190 views

When hanging a double layer of drywall, do both layers need to be fully screwed to the resilient channel?

When adding a second layer of drywall to a ceiling, do I need to screw the first layer to the surface with the appropriate number of fasteners ( type S screws into resilient channel ) as code dictates ...
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2answers
497 views

Grounds twisted without wire nuts

In my 1984 house, inside switch boxes, there are many instances where bare ground wires are twisted together without wire nuts. They are twisted really tightly about 4-5 turns. It has almost ...
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1answer
61 views

Can neutral be used instead of ground for a tankless water heater?

A friend wants to install a tankless water heater under the kitchen sink for faster hot water and plans to use a 40A circuit near the sink that is meant for an electric range. The house was built in ...
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1answer
60 views

Towel warmer (hardwired) - electrical code considerations

We have a new towel warmer, which I believe would not technically comply with codes in the U.S. Electrical connections need to be inside junction boxes, unless I'm mistaken, and this towel warmer ...
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1answer
69 views

Can I drain two clothes washers into a shared two-inch pipe?

I am installing a second washing machine in a different part of the house and want to connect the two washers to the same drain(2 inch pipe). The current washer is in the basement with basic setup of ...
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2answers
54 views

14-2 wire on a 20amp circuit

I have a 12-2 wire connected to a 20amp breaker. This wire is currently not in use and capped off in a junction box in my attic. I'd like to bring this wire back into service to install two new ...
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How to construct posts on 15' tall dock

I am working on designing a 2 story dock that will house my boat and have a deck on top. I was planning on constructing the dock using concrete pillars and 6x6's. My original plan was 12" wide ...
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44 views

Convert 120 V circuit to 12 V by splicing LED driver into existing wiring

My kitchen has a light switch by the sink which operates a pendant light above the sink. I am making a DIY replacement light using a 12 V LED strip and a 4 ft. wooden dowel to be suspended ...
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1answer
63 views

Code-compliant undercabinet light wiring

I have 6 LED undercabinet lights that I plan to link together and power using a switched outlet. The lights use SPT-2 linking cables with proprietary connectors that aren't long enough to link the ...
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1answer
73 views

Can I run two 6/3 NM cables up the same 2x4?

I have two 6/3NM cables coming from the attached garage ceiling into a subpanel mounted low inside an exterior wall. One of the studs is occupied by A/C pipes so I'm hoping there's a way to get both ...
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2answers
79 views

Can you really use 2 cables in place of /4 Romex?

I have always presumed that currents must be equal in the same cable or conduit, and one shouldn't use multiple cables for 4-5 conductors because of eddy current heating, induced vibration causing ...
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2answers
184 views

Is stacking material under an I-Beam to make it level structurally sound and passing code?

Saw this in my new home construction, I am concerned, wondering if this is common. Thanks!
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1answer
174 views

Is it OK to drill/notch an end joist (not rim/band joist) as long as it's continuously supported by a foundation wall?

I'm in the process of trying to run some CAT6 and speaker wire at various places in my house. One of the things I'd like to do is run speaker wire in the living room to a wall plate behind my sofa, ...
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1answer
64 views

Properly Updating Drains for Basement Bathroom Update

Pictures https://imgur.com/a/olBlrHG basically explain it. It was a "full bath" when we bought it and sold as one, (and its recorded as such for tax purposes). I want to convert it to laundry room/...
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1answer
107 views

How to meet code when the outdoor light is separated from the electrical box by a wooden spacer

After new siding was installed on the house, there is a 1-1/2"-thick wooden spacer between the electrical box for an outside light and the location of the light. In my prior experience, the ...
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35 views

Is an aluminium radiant barrier allowed to cover insulation paper facing instead of drywall?

First some context: Geographical location: City of Sacramento, CA, USA Building: Residential detached garage. Goal: To keep it cool in the summer and warm in the winter. Approach: kraft paper faced ...
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2answers
192 views

3-wire electrical wire for recessed lighting

I want to install 4 LED recessed lights in my living room. No ceiling lighting currently exists though there is an existing wall switch that was decommissioned by the previous owners that I plan to ...
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3answers
315 views

Are whole-house GFCIs legal in the US?

Over here in Europe, a common approach to GFCI (RCD) protection is to have one (three-phase) 30 mA GFCI breaker as the main breaker (or something similar such as one GFCI per (sub)panel or one shared ...
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2answers
493 views

I want to run 75C wire. Can I overcome 60C receptacle ratings with a pigtail?

Hypothetical. I am hooking up a range/oven that requires 50A. Its terminations are rated 60C, and there's no way around it. The 100' wiring run is all in EMT conduit and I am running THHN wires, ...
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1answer
87 views

Best way to make wiring to outbuilding legal

I'm fixing some wiring in an older house and I believe the wiring to the outbuilding is not legal. I would like to correct it if possible, but will bring in a professional if necessary. The current ...
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3answers
2k views

Two GFCI outlets on the same circuit, just for code?

I have a condo that hasn't been updated in probably decades, and I am looking to sell it in the near future. As part of my updates, I am installing GFCI outlets in the bathrooms and in the kitchen ...
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66 views

How can I meet NEC code for Class 2 at the power supply with multiple strips of LED lighting?

...The Project... Install 94 feet of perimeter lighting around a kitchen/dining/living space. The desired product is a color tunable LED strip. Possibly this product but I could use an equivalent ...
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2answers
147 views

What's wrong with the wiring in this light switch box?

In another post it was brought to my attention (thanks @Harper) that the wiring in one of my light switch boxes might be incorrect. It was something about a shared neutral, but I don't have the ...
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1answer
175 views

Is it Code legal to hardwire a refrigerator in a basement?

Suppose you have a refrigerator in a basement. You have two dueling safety systems: The cord-and-plug-connected fridge needs to run to keep food safe, but the GFCI needs to trip to save people from ...
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2answers
2k views

What does code say about powered semi-permanent furniture?

I like to build things, and I've been drafting up plans for a headboard for quite a while now. One of the things I want my headboard to have is a number of outlets, since laying on my bed is where I ...
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3answers
260 views

Dedicated Laundry Room Circuit?

I live in Florida. According to the Florida Residential Building Codes (2017): E3703.3 Laundry circuit. A minimum of one 20-ampere-rated branch circuit shall be provided for receptacles located ...
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1answer
72 views

Can I paint the electrical panel? [duplicate]

I am painting the room in our basement that contains the electrical panel. I think it would look a lot better to paint the panel the same color as the wall, instead of the plain grey-green metal. I've ...
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1answer
210 views

Square D QOC 12 125: Is it possible to bring this subpanel up to code?

I opened up this subpanel for the first time because when I opened the walls for contractors to install floor drains, I found a circuit with four splices that were any/all of: not enclosed in ...
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5answers
933 views

Can I use a 2-wire NM cable staple on 3-wire cable?

I have a package of Gardner 1/2 inch staples and the package shows that they are good for 2-wire, see below: I am running some 14/3 wire (flat) wire for AC hardwired smoke detectors but these staples ...
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1answer
958 views

How to run wire through corner with lots of studs

I have a new garage addition that I'm doing the electrical for. I got to the point of running the wires for the front coach lights and realized a snag. I'm trying to figure out the best way to run ...
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169 views

Widening a closet opening, what type of header to frame?

I have a standard 30 inch closet door. I want to expand the opening to 48 inches (to install double bifold doors) I am 98% certain this wall (which is on second floor) is not load bearing: There is ...
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2answers
1k views

US residential stair railing code: What is the requirement for terminating an open railing?

We're trying to pick out railings for our house. Our stairs are going to have an open side and we want to use a modern railing system such as this one: You can find plenty of similar images for ...
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7answers
4k views

Outlet screwed directly into stud

I was replacing old outlet in my house and came across an outlet that is screwed directly into the studs. Also the stud and the junction box were cut to fit the outlet. The new outlet is too big to ...
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1answer
61 views

Can I recess electrical panel deeper than usual?

In California, I know that code limits how recessed behind the finished wall the electrical panel can be. I'm interested in improving the acoustic STC of the wall assembly and the easiest way is to ...
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2answers
94 views

Correct gauge and jacket type for feeder wire to subpanel?

I need to install a 200A panel about 100 feet from the meter base. I have 400A service coming to the building, broken out at the meter base into two 200A exterior disconnects. One disconnect is ...
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4answers
153 views

Do cables that are not NM type need to be derated when used as NM?

I am a newbie in this forum but have been looking at some of the wiring in my house especially some XHHW-2 wiring used for the electric range. I need to have some clarification of cable terminology. ...
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1answer
148 views

Is it up to code (anywhere) to have a ground wire poking out the end of a wire nut?

A few days ago there was a hot question about wiring with several pictures, here's one. Ignoring all the other issues with this wiring job, on the right hand side we see a green wire nut with the ...
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1answer
154 views

Do I need outlets in a built-in bookshelf?

I know that there is normally an outlet every 6 feet rule for electrical code. However, I am doing a renovation in which an entire wall is a giant bookshelf and cabinet built in which is 17 feet wide....
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7answers
8k views

Are soldered electrical connections code-compliant?

I was changing a switch in my house when I found a number of connections in the electrical box that were soldered rather than secured with a wire nut. The solder joints look very well done, the ...
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3answers
1k views

Are “terminal block” style junction boxes allowed in the US?

In the UK it seems pretty common to see junction boxes with built-in screw terminals that are used only for splicing wires from 2 or more cables together. Typical example: (source) Sample wiring ...
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2answers
55 views

Window Tempering Rules and Interior Doors

Are interior doors included in the discussion of the 24/60 rule? In other words, if I have a pane of glass that is within 24 inches of an interior door, does that mean it must be tempered?
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1answer
175 views

Can new construction recessed lights be installed in inaccessible ceilings?

In California, does code allow me to install recessed lights in a ceiling which which be inaccessible once closed up? (Such as between floors) I have seen it done many times but I was thinking that ...
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1answer
29 views

Intl Mechanic Code 309.1 “Space-heating systems” clarification

I am looking at the ICC Intl Mechanical Code, in section 309.1 309.1 Space-heating systems. Interior spaces intended for human occupancy shall be provided with active or passive space-heating ...
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3answers
74 views

Electrical Question for Receptacles in guest house

Wiring a out door shed that has everything that a home does; bathroom kitchen living room and extra bedroom. Pretty much like a guest home you can say. When I run my wire in the bathroom of it. The ...
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0answers
45 views

Do vanity lights require a junction box? [duplicate]

We have an electrician at our new home in Utah installing some new lights, after removing some of the installed lights we are noticing that above the vanities there are no junction boxes behind our ...

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