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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3
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3answers
4k views

Splitting a 220v line into a 110v line and a 220v line?

This question reminded me that when we bought our house, I found the previous owner had taken the dryer's 220v circuit and continued half of it from the 220v outlet to make a 110v circuit for the rest ...
4
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2answers
327 views

Minimum bedroom size - 7 foot in any horizontal direction

I'm remodeling a basement and trying to determine if a particular layout would violate code. I am in a 2015 IBC/IRC jurestiction. This blog indicates that the bedroom must be At least 7’ in any ...
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2answers
1k views

Is this T&P relief valve discharge pipe installed correctly?

I had a plumber install a new water heater the other day, and he said it's up to 2018 (US) code, but I've been wondering if the T&P relief valve discharge pipe really is correct, because it seems ...
2
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1answer
565 views

Derating a dimmer when using LED lamps?

I've run into a bit of a delema. I plan to install 16 Halo H7 recessed lights in the ceiling of a new home. They are technically rated at 75 watts because they have medium screw base sockets and can ...
1
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4answers
6k views

When is an expansion joint required for PVC service entrance conduit?

The service entrance will use 2.5" RNC, about 100' run underground, with 2 90 degree sweeps, with the second sweep coming up to a meter/panel mounted on the outside of the house. The conduit will be ...
19
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3answers
1k views

Is it permissible to have exposed mains conductors in holiday lights?

I've just had a holiday lights company install some outside tree lights, and I found they had done it so that at several places the prongs of mains cable plugs had been left exposed, and carrying ...
0
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1answer
162 views

what can the county do if my shed violate zoning distance?

So, here is the issue. Me being stupid, decided to start building a 12 x 16 shed. (sits on wood foundation) THEN I started researching what the county permits. The shed has a setback of either 5 or ...
5
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2answers
520 views

Is it Code to support Class 2 (thermostat) wires using a gas line?

Related to this question. Our gas furnace, while quite functional, has some quirks in its installation. One of them is that the installers cut off the old (original to the house) thermostat wires at ...
4
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2answers
205 views

Can central alarm smoke detectors be used instead of 120v smoke detectors in a new residence?

Code requires that new residential construction have a smoke alarm in each bedroom and outside of each bedroom, and that the smoke alarms be interconnected. (They all go off at once). If you plan to ...
0
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0answers
37 views

How near does the water heater shutof valve need to be?

Codes say I need a shutoff valve "near" the water heater, accessible on the same floor. How near is "near" - is it OK if I have one on the source side of the pipe, near the water meter? (It's a ...
7
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2answers
724 views

What do I need to provide the cable company with for grounding, when wiring my own house?

I'm planing to do my own electrical wiring for a new house, and the cable company needs something to attach their ground wire to when they mount the demarcation box. I'd like a clean looking install, ...
4
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1answer
374 views

What's a clean and code-compliant way to terminate Cat6 cables at a wall, where a rack mount patch panel will be in front of it?

This is new construction for a home, and I'm installing about 65 Cat 6e home runs from various points in the house to a location on the wall where a freestanding floor rack will go at the time of ...
2
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2answers
1k views

Code for Buried Comms Cable

Are there any code requirements for buried communications cable (coax for TV/Internet)? Rockdale County, GA if it makes a difference. I have some jokers contractors at my house today who are supposed ...
3
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1answer
137 views

US Building Codes - Do I need a handrail on this initial section of stairs?

I realize that building codes tend to vary by jurisdiction, but I'm wondering, in general, do I need a hand railing and/or guardrail on this initial section of stairs as shown in orange? My hope is ...
2
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2answers
114 views

Tying additional lights to entryway light — does that violate any codes?

My front door opens directly into the living room (no formal entryway) and there's a single potlight directly over the door with a dedicated switch. I'd like to add three more cans to the living room ...
0
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2answers
72 views

Is there any code regarding in-wall convection ovens?

Are there any code restrictions involving in-wall convection ovens?
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2answers
2k views

what 2017 NEC code talks about knob and tube replacement

Have an insurance job and the home owner wants to redo the 1st floor apartment. The apartment is wired with knob and tube so I recommended it needed to be updated. When pitched to the insurance ...
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2answers
7k views

Code requirements for the proximity of Power outlets to wash machine water outlets?

In a laundry room (in the USA) - is there a code in the NFPA - NEC for minimum distance the Dryer and Washer Electrical outlets must be placed from the washer water pipes ?
2
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2answers
150 views

How do you rough in for surface mount disconects that install after drywall?

When you have disconnect boxes (60 amp non-fused disconnect) that surface mount after the drywall is installed for a water heater, an air handler, or similar large appliances that connect to the ...
4
votes
2answers
5k views

Is it OK to caulk around an outdoor electrical panel or meter base?

I've heard that you shouldn't caulk the outside perimeter of the meter base or an outdoor electrical panel (sealing it to the house siding), because the panel needs to "breath" on the back. I haven't ...
0
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1answer
5k views

How high should I install an outlet in my bathroom?

I would like to install a GFCI outlet in my bathroom. I attempted to install it beside our vanity mirror on first the left then the right side, but was unable to due to the construction of the wall, ...
2
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1answer
248 views

Multiple 30A outlets on the same breaker

I am upgrading my Garage/Shop electrical installation and adding a few 30Amp circuits. Is there any electrical code restrictions to have multiple 30A outlets on the same 30A breaker?
2
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1answer
6k views

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 ...
3
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2answers
105 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 ...
2
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0answers
65 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
3k 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, ...
1
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2answers
198 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 ...
1
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1answer
56 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 ...
0
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2answers
239 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, ...
2
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2answers
979 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)....
2
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1answer
2k 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 ...
9
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2answers
2k 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 ...
0
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1answer
260 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 ...
0
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1answer
110 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?
4
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3answers
432 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
67 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 ...
1
vote
1answer
1k 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, ...
0
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1answer
1k 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 ...
0
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2answers
2k 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 ...
4
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1answer
2k 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
445 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 ...
1
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2answers
769 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 ...
1
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2answers
2k 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 ...
2
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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?
7
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3answers
1k 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 ...
1
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2answers
379 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 ...
4
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2answers
547 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 ...
1
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2answers
178 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 ...
1
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2answers
120 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 ...
2
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2answers
313 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?

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