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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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Using a 15 Amp Switch on 20 Amp Circuit

I know that it is to code to use two 15 Amp Receptacles on a 20 Amp breaker. Is it acceptable to use a 15 Amp switch that controls the bathroom lights, which is on a 20 Amp breaker, along with an ...
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2answers
95 views

Can you serve a multi-wire branch circuit off a pendant?

I've seen a slick trick done in some maker spaces. They have a big room full of project desks. Above each desk is an air hose on a retractable reel... And a NEMA L14-20 receptacle. Dangling off ...
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0answers
57 views

Does removing some drop ceiling panels make plug-in lights OK?

I am uplighting a room with a drop ceiling. Cheap 4' fluorescent shop lights are hung below the drop ceiling, with their cords disappearing into a corner of a drop ceiling panel. Real hack job. ...
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2answers
2k views

Running Cable Underground in PVC Conduit - Do I bond the PVC segments before pulling the wire through?

I have the PVC segments with the flanges at one end, and a relatively short (under 50ft) run, but its very bendy at the ends. My initial thought was to pull the cable through the pieces one by one, ...
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2answers
147 views

How to safely block French doors to nowhere

I am going to tear down an existing deck (which is rotting out) and want to block off usage of existing French doors that currently lead to the deck. I’ll attach photos below. I am going to build a ...
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1answer
48 views

How to fix damaged wires in receptacle box in new installation?

While cutting holes for outlet boxes in new drywall, my contractor (ahem, me) managed to damage some wires in one of the outlet boxes with his RotoZip. Now there's not enough undamaged wire to meet ...
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2answers
208 views

What is the proper disconecting device for a heater + air handler not in sight of the panel?

I'm finding all sorts of conflicting information on this, some of which is hearsay, local, or outdated. For an electric heater and air handler unit, with #6 wire, that will be either 50 or 60 amps, ...
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2answers
658 views

What are the specific and current code requirements for wiring two circuits to one duplex receptacle?

I'm finding a lot of conflicting information on this, and I think the code has changed a lot over the years, and many posts in forums are about multi-wire branch circuits (or being confused with them)....
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1answer
943 views

Using 15-amp thermostat on a 20 amp circuit

I live in Washington state. I have a 20 amp circuit breaker on a circuit that drives two fan-forced heaters, connected through a single line voltage "dumb" thermostat, unknown rating. I would like to ...
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2answers
1k views

Are five conductor wire runs (two neutrals) for two circuits still considered a “multi-wire circuit” for code purposes?

Typically, a multi-wire circuit run has two hots on separate legs, a shared neutral and a shared ground. There are very specific rules (NEC 210.4) about these types of circuits to ensure that the ...
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1answer
155 views

Unable to locate shower shutoff valve

I wanted to repair a dripping in-shower valve, and as the first step searched for a shut-off valve to the shower, only to discover there is apparently none. Similarly, I cannot find a valve for the ...
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1answer
103 views

drywall inspection [closed]

The city I am in requires me to get a drywall inspection for a new wall. Should I have the inspection done before I mud and tape? What are the issues that drywall inspectors are looking for?
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3answers
288 views

Are there concerns with leaving part of a home's ground level unfinished?

I'm designing a new house for myself, and I've always wanted a basement so I would have unfinished hobby space. The kind of space where you can get messy stuff on the ground like water, paint, sawdust,...
2
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0answers
66 views

Can I keep my outbuilding's 10a classificaton

This question is specific to Victoria, Australia. I have an old (1945) 6m by 7m outbuilding (basically, a small barn) on my property, and I would like to run mains electricity and water down to it so ...
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1answer
785 views

What size feeder do I need for an RV shore power panel?

I'm looking to install a shore power panel for an RV, which will have a 50-ampere, 30-ampere, and 20-ampere receptacle in it. Each receptacle is protected by an appropriately sized circuit breaker, ...
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1answer
767 views

Is it safe to cap off live red wire in split receptacle?

Ontario, Canada. Kitchen has a split receptacle with 2 hot wires (black and red). The metal tab on the receptacle (on the side of black/red wires) is broken off. There is a combined 20amp breaker at ...
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2answers
1k views

Can an electric water heater and electric air handler/furnace be installed in the same closet?

I'm working on designing a small cabin that is slab on grade with no garage and I need to place the air handler (with electric furnace) and the electric water heater somewhere. There are all sorts of ...
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1answer
1k views

Dryer Venting Woes - what to do?

I can certainly collect some pictures for this but I'm hoping on sound engineering & design principles I'll get a recommendation worthy of executing to that meets code. I have a vented clothes ...
3
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1answer
281 views

bathroom venting plan review

I'm putting in a basement bathroom and working through the drain layout. There is a slab already poured so I want to get it right before busting up the concrete. It will be inspected, basically ...
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2answers
539 views

Is a divided wireway or auxiliary gutter considered one wireway/gutter or two for derate purposes?

A common accessory with auxiliary gutters or wireways is a divider that extends the length of the gutter/wireway and creates two wiring compartments instead of one. This is more commonly used to ...
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2answers
1k views

Deck post cut too short - possible solutions?

I have a new deck going in the back of my house, about 6' off the ground. Made a HUGE mistake and made cuts on the posts 4.5" too short. Short of removing the posts and concrete, digging new holes and ...
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5answers
2k views

20 amp circuit and GFCI outlets everywhere

Except for money saving is there any reason why you would not put 20 amp wiring and 20 amp GFCI receptacle (=1 per circuit) everywhere?
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3answers
544 views

Per IRC, are flexible PVC couplings ever allowed to be used above ground for PVC to PVC connections?

It is my understanding that flexible PVC couplings (e.g. Fernco) meet the definition of Mechanical Joint in the international residential code. The 2015 IRC prohibits the use of Mechanical Joints on ...
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2answers
253 views

Can multiple panelboard interior/cabinet combos or loadcenters be chained together to form a single “logical panelboard”?

Background Both the houses I deal with (which are quite far apart btw) are in need of panelboard reworks: One still has the original fusebox, never mind that the main disconnect is basically at the ...
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2answers
359 views

Why am I hard pressed to find framing nails that meet code at my local retailers?

I'm specifically talking about collated framing nails for a pneumatic nailer. For example, the IRC calls for 16d common nails (3-1/2" length, 0.162" shank) all over its fastening schedules. Clearly a ...
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2answers
119 views

Can a UL 1953 listed power distribution block be deployed in a panelboard cabinet?

So, one of the things I want to do if I ever get a chance to have a house wired to my specifications is have each room have its own lighting homerun to the panel, but multiplex these homeruns onto a ...
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2answers
96 views

Recommendations for search terms - insulate wall between duplex units

I have one half of a duplex, which is separated by a brick wall (looks like a triple brick?). While refinishing my basement, I'm trying to determine the insulation requirements in my local building ...
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2answers
255 views

Is the Shark Bite product illegal in Vermont?

Is the use of shark bite connectors forbidden in Vermont? If so,what other options would I have replacing the pipe connectors under our sink without soldering?
7
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2answers
1k views

Electrical outlet in low voltage bracket?

I generally do my own electrical work but needed to upgrade my service from 100A to 200A so I hired someone. I had them add some outlets to my garage while they were at it because I was feeling lazy. ...
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0answers
43 views

Are non-metallic in-use covers acceptable according to NEC 2011?

Our village goes by the NEC 2011 (they have not updated to current code). Can you use non metallic in-use in Cook County, Illinois, or do i have to use the metal ones? I looked at 2011 NEC 409.9 A. ...
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1answer
74 views

Is Shimming Old Framing Okay?

I shimmed the framing around a window in a 50 yr old house. Would an inspector find fault with that? Should I remove the shims and leave it in its previous state? I would simply replace the studs, but ...
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0answers
34 views

Is a Bathroom Heating Vent in Wall Shared with a Garage OK?

My home was built in the 1960s in MD, USA and has a ground floor bathroom next to the garage. The bathroom has a heating vent in the wall bordering the garage. (The wall is 2x4, not 2x6, construction, ...
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2answers
153 views

Does placing electrical cables in a fence between two structures meet electrical code?

Can electrical cables be concealed in a fence between two structures? In this residence, the power meters and outdoor panels are located on the garage. There is a panel inside the residence like most ...
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0answers
80 views

Running bathroom vent duct through cold air return

I am remodelling a basement and I noticed that the old bathroom has the vent duct running through the cold air return ( for about 6ft, in and out, the entrance and exit are sealed) and then outside. ...
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3answers
7k views

Is the wall between a home and an attached garage built as an “exterior wall”?

I have an attached garage. There is an exterior-rated door between the garage and the living space. Should the entire wall be built as an exterior wall, as far as sheathing, width, etc? Is there a ...
3
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2answers
2k views

Can a 10' high wall be built with 2x4's in Ontario?

I'm building a 1400 sq. ft addition which will be mostly covered with a flat (very low sloped) roof, with a second storey bedroom over the rest. I'd like to have 4" of continuous rigid exterior ...
2
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2answers
402 views

What is the proper way to connect 10awg wire to connectors rated for 14awg wire?

I'm installing 120v to 12v transformers for low voltage lighting. Inside the transformer are output connectors for the low voltage wire, and those output connectors are rated for 14 awg wire. I'm ...
4
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1answer
313 views

Can I install outlets in my window wells?

I'm helping my folks install battery-operated sump pumps in three window wells to deal with a persistent flooding problem. We're running a GFCI-protected circuit from a nearby sub-panel to each ...
3
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1answer
2k views

What is the legal definition of a habitable space/room?

I am confused as to what rooms are habitable rooms in regards to permitting. According to ASHI Habitable rooms are living, sleeping, eating and cooking rooms. Common terms for these rooms include ...
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1answer
88 views

Does every light within a fixture need to be grounded or just the fixture itself?

I'm building a chandelier that is around 10 feet tall that will look similar to the picture below. The chandelier is made entirely out of malleable galvanized iron pipe. Each light socket on this ...
4
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2answers
168 views

Is it legal to torque-seal terminal screws on electrical equipment?

Torque seal is a lacquer-like product used in critical applications after a screw is tightened to provide a visual indication if the screw comes loose. Considering that a terminal screw on an ...
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1answer
367 views

What is the proper way to protect electrical wires in an iron pipe lamp?

I'm building 10 foot tall steampunk chandelier. It will look similar to the this The electrical wire is going to be fed down through the top of the chandelier and to each light bulb. All the ...
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0answers
90 views

Does IRC 2012 Code allow water lines in exterior wall?

New construction, 2x6 exterior wall in a basement walkout. Does the IRC code or any plumbing code prohibit installation of water and drain lines in an exterior wall? We want to put a vanity sink ...
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3answers
880 views

Is there any reason (code or otherwise) to not vent one room into another?

I have a closet in my office that I'm using as a server room in my house. As I add more equipment in there, it generates a significant amount of heat, which is contributed to by the office itself (...
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1answer
333 views

Is it okay to use an LFNC whip to connect air conditioner where subject to physical damage?

I have seen many air conditioners at ground-level in multiple cities near me that are connected using liquid-tight non-flexible conduit (LFNC) whips. Example: http://www.southwire.com/products/whip-...
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1answer
91 views

Is modifying a box unsafe or against any electrical codes?

I modified a ceiling fan support box to fit onto a ceiling fan support brace. I did this because I wanted a ceiling fan in my dining room, but the junction box had three conduits running into the top ...
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2answers
4k views

New house - No neutral in switch box?

I was going to add an outlet to a switched 1 outlet circuit thinking it would be pretty straight forward to run a wire from the switch box to a new outlet. The switch in question is a simple 2-way. ...
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0answers
35 views

Possible to DIY a multiple fixture canopy?

I've been looking at making a fixture for my island that would consist of 5 separate LED bulbs hanging down from a single canopy, each about 15" apart. Looking at what's out there in terms of ...
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2answers
390 views

What is considered “servicing” for NEC 225.30?

I previously asked a question (Grounding subpanels located ~100ft from main breaker) where I was informed of NEC 225.30, which states that a building [...] shall be supplied by only one feeder or ...
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1answer
1k views

Can a thermal expansion tank be install above the water heater?

The manufacturers instructions show the expansion tank installed with a 'heat trap 6" minimum' drop to the side of the water heater. I have a tall 30 gallon (< 17" diameter) water heater going in ...