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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2answers
762 views

Legal water heater replacement

I'm looking to replace my water heater. I currently have a 15 year old 40 gallon gas water heater, and it's time to go. I had several quotes from local plumbers, and choked at the prices. I'm going to ...
3
votes
1answer
939 views

Unused electrical duplex box, soon to be hidden behind a bookcase?

I'm getting ready to install bookcases for my home office (SouthWest USA). One wall floor to ceiling consisting of four units screwed together. In one place there is a duplex outlet right behind the ...
3
votes
1answer
279 views

How can I find out if a vapor barrier is requried for finishing a basement to code?

I'm planning out a basement finishing project, and I'd like to do it correctly. I've done a lot of research but what I can't tell is if I do, or do not, require a vapor barrier. I was hoping from a ...
3
votes
2answers
18k views

Does it matter if I mix neutrals and grounds in the main panel?

Code question here. I do a lot of electrical and like to follow code exactly. I have done pretty much everything but hook up lines to main box. Taking a stab at it this time. First I see that I ...
3
votes
1answer
865 views

Can I have a handrail on only one side of the stairs?

Is it legal to have a handrail on only one side of the stairs if it's not continuous? (As shown in the picture below) Or should I remove that small handrail and put a long one all the way down on the ...
3
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2answers
10k views

What is the purpose of a double pole breaker for separate 15A circuits?

My new house is done being built and I am going to come in and install my new gas range and dishwasher, both 120V 15A appliances. I got thoroughly confused looking at the breaker box because gas ...
3
votes
1answer
698 views

Two switches in same box, on different circuits

Is it acceptable by US NEC standards to have two switches in a double wall box that operate on entirely different circuits in a late 50's house?
3
votes
1answer
93 views

Round hole, rectangular junction box

I am installing a new light fixture into ceiling. There is a round hole there right now (from a recessed light that I removed). The problem is this round hole is just short in diameter of standard ...
3
votes
1answer
86 views

Cat6/Low Voltage Termination in a wooden enclosure

I have been bouncing around the idea of running CAT6 thru my older (1970s) house. Single story with an unfinished attic I have identified a bedroom closet as the potential location for the central ...
3
votes
2answers
721 views

What are the code requirements for crossing a buried LPG line with an electric line?

Trenching for 1" Non-Metallic Liquidtight Conduit Type LFNC-B with 18" cover (10-3 W/G UF wire installed, 240V with 30A breaker) to serve a well. Just bumped into LPG line crossing conduit's path at ...
3
votes
6answers
23k views

How can I insulate kitchen vent to prevent cold air blowing through all the time?

Building code requires my kitchen to have a 15cmx15cm vent (besides the kitchen cook-top vent). This vent is basically a hole in the wall that reaches to the outside. The vent has grating on both ...
3
votes
2answers
81 views

Is rodent damage considered “physical damage” under the NEC?

Does the potential for rodents to access/gnaw on a cable under normal circumstances render it subject to "physical damage" in the sense the NEC intends that term to be used?
3
votes
2answers
407 views

What to do with the wires when removing baseboard heaters

I recently put in a forced-air whole house HVAC system in my old house. I'll be yanking the old electrical baseboard heaters from everywhere in the house soon. I'm wondering what all would be ...
3
votes
1answer
128 views

Does code require the gas line to be replaced when replacing a furnace?

I replaced my 45 year old (still working) original furnace with an American Standard furnace about 5 1/2 years ago. Now I have a gas leak; the Nicor technician sealed a connection in the gas pipe ...
3
votes
1answer
150 views

Should there be waterproofing between the rim joist and ledger on new construction?

My new house is being built with a deck and I noticed that the framer has fastened the ledger directly to the rim joist without any sort of waterproofing between. The sheathing which is Zip system ...
3
votes
1answer
262 views

ADSL + Ethernet Surge Protection. What is chaining?

I would like to protect my home network setup with surge protectors. The products I am looking at are: APC Essential SurgeArrest 5 outlets 230V APC ProtectNet standalone surge protector for ...
3
votes
1answer
173 views

Listed electric baseboard heaters that permit installation below outlets

Are there UL-listed electric baseboard heaters that do permit being installed below outlets? The FPN in 210.52: Informational Note: Listed baseboard heaters include instructions that may not ...
3
votes
2answers
70 views

Does a 16“W x 13” deep counter space need an electrical outlet?

I have a 15"W x 24" Deep base cabinet. The counter top overhang is 1" on the front and right side. There is no overhang on the left side as there is a gas range there. There is a 15" W x 12" deep ...
3
votes
1answer
848 views

How do I string a low voltage wire between two buildings?

I need to get Cat6A to an outbuilding for network communication; underground is not an option. I think I have an idea on the method: grounded pillars with a guyline and the outdoor cable. What NEC ...
3
votes
1answer
392 views

Are four gang plastic boxes stackable in a wall?

I would even be willing to go side by side but I would like to stay with the four gang sizes. I am hoping this would pass code and would prefer to stack so if there is someone that knows if it is ...
3
votes
1answer
1k views

Can a yurt be a dwelling?

Yurts are beautiful, charming, quirky, easy to build, portable, and cheap. I bought a 30' yurt from Pacific Yurts. It includes the insulation kit. Can I use it as a dwelling?
3
votes
1answer
1k views

Is it OK to have a gas water heater in a bedroom closet?

I have a laundry room with a gas water heater in the closet. I was thinking about taking out the washer and dryer and renting the laundry room as a bedroom because there is a bathroom next to the ...
3
votes
2answers
127 views

According to NEC 210.52 can this receptacle be counted as part of the required outlets in a dwelling?

Under NEC code artcile 210.52 Dwelling Unit Receptacle Outlets ...The receptacles required by this section shall be in addition to any receptacle that is: (1) Part of a luminaire or appliance, or ...
3
votes
1answer
513 views

Is it allowed to connect 14 awg ground wire to 12 awg ground

I have a 20 amp circuit and a 15 amp circuit coming together in a 2-gang box. I have to connect all the ground wires together. Is it ok that I am connecting 14 gauge wire to 12 gauge wire for the ...
3
votes
2answers
488 views

Is it acceptable to splice a circuit in two opposite directions for outdoor recepts/lighting?

Per the 2011 NEC, is it acceptable to... Splice a circuit (using a junction box indoors) as long as I leave it exposed, use the correct wire connectors, and have it covered? Use this run one side ...
3
votes
3answers
29k views

How to properly ground a subpanel in detached building?

I Will be installing a subpanel in a detached garage. The subpanel will be 60 amp. The garage is about 30' from the main-panel in-house, and I will of course get an exact length before selecting the ...
2
votes
5answers
4k views

Why are there multiple receptacles by amperage?

I could imagine the various receptacle shapes being a tool to protect you from making a mistake about what you plug in. Consider a 15A breaker with 14ga wiring to NEMA 5-15R receptacles. The circuit ...
2
votes
2answers
95 views

Is this a compliant way to control three circuits with two switches?

I'm planning to replace two dimmer switches -- but I found the following clever wiring when opening up the junction box. Three circuits where the neutral lines are spliced together, one live line ...
2
votes
2answers
446 views

Do I need to install carbon monoxide detectors to be up to code?

My home was constructed in 2003 and has a natural gas furnace. Do I need to install carbon monoxide detectors to be up to code? It seems confusing since the first code IRC 315.1 is only for new ...
2
votes
1answer
342 views

Is a dryer vent tube being compressed like this up to code?

There's a 4" dryer pipe in my wall that is smashed slightly in order to get it to fit into the wall made with 2v4s. Is this OK?
2
votes
2answers
985 views

What type of wiring should bedroom overhead lighting have?

On the phone with a friend in Cali this morning. He said that some municipalities are requiring /4 (12-3 or 14-3 romex) wiring for all new construction or rewiring for overhead lighting components. ...
2
votes
1answer
134 views

What can happen if someone doesn't get a building permit for a renovation?

What are the possible repercussions if someone doesn't get a building permit when doing a renovation? I have heard many people I know say they never got a building permit to get "x" done and they have ...
2
votes
1answer
445 views

does this look like an up to code support beam?

we had an entry way widened a bit which required them to install a longer support beam. I'm absolutely not a professional. But the 2x4's supporting the larger beam don't seem very substantial to me. ...
2
votes
1answer
2k views

Is it against code to create a romex to thhn junction inside a conduit body?

I'm installing a 60A subpanel in my detached garage. I'll be running 2GA conductors, to leave the possibility of upgrading to 100A service in the future open. The Breaker I'll be using on the main ...
2
votes
2answers
76 views

Conduit Size for Sub-Panel run?

I have old overhead wires that go between my home and a detached garage. The plan is to remove the overhead wires and install a new sub-panel in the garage with an underground (PVC 80) run between the ...
2
votes
3answers
449 views

What's the difference between “physical damage” and “severe physical damage” in the NEC?

The 2014 NEC uses "physical damage" at various points to refer to well, hard knocks, if you know what I mean. However, certain passages in the NEC, such as 358.12 point 1 on EMT: Where, during ...
2
votes
3answers
349 views

Is it safe/compliant for one circuit to supply grounded wall outlets in both a kitchen and a living room?

On one side of my wall (in kitchen, not the refrigerator or stove plug) is a three prong grounded outlet. Would it work without overloading a circuit to put a new outlet on the other side of the wall ...
2
votes
2answers
32k views

What is code for installing a dishwasher in the U.S.?

I will be replacing my dishwasher and I am curious what is the current code for the wiring of the dishwasher.
2
votes
1answer
161 views

When do galvanized pipes in NYC residential water delivery pipes need to be upgraded?

It was suggested that I ask here. Some residential properties in New York City still have galvanized pipes for the inlet water line. Since heavy metals from the galvanization can leach into the ...
2
votes
3answers
965 views

What are the code regulations for stairs off an exterior french door?

Do the stairs off my french doors need to be the width of both doors or can they be just the width of the most used side? How big does the landing have to be at the top and bottom? Can I just ...
2
votes
4answers
1k views

Any problem with installing two identical circuit breakers in series?

Suppose I want to reduce risk of a circuit breaker malfunctioning and failing to disconnect a shorted circuit. What if I install two identical breakers sequentially (one after another) so that if one ...
2
votes
1answer
5k views

What are the codes for electrical wiring in attics?

What is the typical code for wiring in attics? I understand these vary but what's best practice? Can you just have electrical wires exposed with all the junctions, in junction boxes, provided all the ...
2
votes
1answer
514 views

How should I protect a gas line in a closet?

What is the best way to protect and hide a gas line that runs along the side wall of an open (no door) closet? It sits about 2” off the ground and is 1” away from the wall. Since it’s an open closet I ...
2
votes
1answer
706 views

What does the Plumbing Code say about securing a bathtub faucet to the studs?

My son is renting an apartment. It looks as if the bathtub faucet (spout and valvehandle) are only secured by the grout of the tile and haven't been properly secured at all to the studs. I know that ...
2
votes
2answers
212 views

Can PEX be used for the trunk

Currently I have a length of galvanized steel pipe (3/4") from the water meter, which is feeding the main trunk (3/4" copper). The water pressure in the house is very low, and I suspect it is due to ...
2
votes
1answer
266 views

Another code question: can I take a 110V outlet off one leg of a 220V circuit?

Wiring the workshop, it'd be simplest to use the 220V circuit to also supply the shop's 110V outlets. I know some machines/appliances do that internally; can I expose it on the wall? (I'm never sure ...
2
votes
2answers
927 views

How do I install fire blocking while finishing a basement?

In Colorado, the building code asks for a fire block when finishing a basement. I know this goes against the out walls (foundation). I've seen 2x4 and OSB used: which is better? And how does the OSB ...
2
votes
2answers
260 views

Is it code to have a concrete floor in a bedroom? [closed]

For some reason I recall that it is Ohio Building code that a bedroom must have a floor finish material other than subfloor. So if you are in a Slab on Grade (SOG) condo, does the code require you to ...
2
votes
1answer
141 views

Can one of the (two or more) required 20A circuits for kitchen receptacles also serve a Dishwasher? (California Code)

Does the California Electrical Code allow one of the two required 20A circuits powering the wall / floor receptacles to also power a dishwasher? Bonus question: If not, and the dishwasher requires ...
2
votes
1answer
70 views

Add drain line to existing Island fixture vent?

In CA, would code allow for a drain line to be tied into the vent line shown at the location of the red arrow below? Single family home. Happy to draw a picture of where that vent lines goes, if ...