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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1answer
5k views

Can I install a receptacle outlet below a window?

I need to add a receptacle outlet to an existing line. I will run the line from an existing receptacle outlet. Is it okay to locate the new outlet below an existing window?
5
votes
1answer
575 views

Can a single metal electrical box use two ground clips?

Inside a metal electrical box, can I use multiple ground clips (one for each conductor), or is it required that all ground conductors be twisted together and pigtailed into the same clip?
5
votes
1answer
3k views

Is there a correct orientation for hurricane clips?

When installing hurricane clips to joists where it crosses a beam, is there a preference to mounting the clips on the inside or the outside of the beam? And should the ears on the clips point inward ...
5
votes
1answer
91 views

What code requirements exist for low-sill, upper-floor windows?

I own a house in Texas (USA), built in 1885. I am renovating, enclosing the second floor back porch; it's essentially an addition, with a bathroom, a storage closet, and a hallway. The area will be ...
5
votes
1answer
2k views

How do I get power into my kitchen cabinet?

I'm trying to run power for some under-cabinet LED strip lighting. I think the easiest way is to tap into the stove hood, so my question is: how do I do this in a way that is legal and meets code ...
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votes
2answers
5k views

How do you secure electrical outlets in a concrete block wall?

I have an old home that has several outlets in the exterior wall. These outlets are not secured to the block, they just dangle in the opening and are only secure (or appear to be firmly in place) due ...
5
votes
1answer
2k views

How can I resheathe behind brick fascia without removing the brick?

The original builders of my house used a material called "Aluma Sheath", also known as Dennyboard, to sheathe my house. Dennyboard is a radiant coating on two sides of a 1/8 sheet of a fiberous ...
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votes
2answers
1k views

Building code requiring rooms to have internal windows?

I am staying at the Radisson in Colorado Springs this evening and I notice that some of the rooms, in an extension built about 15-20 years ago, have large security windows facing into the hallway. The ...
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7answers
10k views

Can a bathroom vanity be installed higher than 30 inches?

"Standard" bathroom vanities are 30", where as kitchen counter tops are typically 36". For me (6' tall), the 30" vanity is rather low. Is there any reason to leave vanities that height, or can they ...
4
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1answer
2k views

What is permissible for a breaker box cover?

We're doing some remodeling in our kitchen and unfortunately the breaker box is right in the middle of a wall we are going to cover with tile. My current thought is to replace the existing metal ...
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votes
3answers
522 views

Is any of this plumbing work a code violation?

I've repaired plenty of pre-existing plumbing, but don't know enough to put all new plumbing in a house, so I hired it out. Some of it it is fine, but I'm unhappy with the rest of it, and since I'm ...
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3answers
1k views

Code for elevating water heater in garages?

A gas/propane water heater in a garage is elevated. This is to ensure the open flame (at the bottom) is above a certain height (?) to avoid any combustible fuels in the garage from igniting. This all ...
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3answers
1k views

Is it okay to protect NM Cable in an unfinished basement with ENT?

Adding a 20 amp subcircuit (120V) to furnace room to turn it into a workshop. Initially it will have one duplex and 2 fourplex receptacles, the fourplex receptacles will be on cement walls, the duplex ...
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2answers
117 views

Maximum Distance Between Outlets

In an answer to this question Iggy's answer contains a picture that says "Maximum spacing between receptacles on the same countertop space is 4ft." Does this mean if I were to build a house with 28 ...
4
votes
2answers
168 views

Can a 220V US circuit have more than one 220V outlet, by code?

When I move the laundry, I'm considering switching to a gas drier -- but even so it'd be nice to have the 220V drop there for future-proofing. However, if I'm not using it for the drier, I'd like to ...
4
votes
1answer
394 views

How bad is it to attach a gas water heater to a gas furnace electrical circuit?

I'm looking to replace my existing water heater with a more efficient model. One of the things that makes better models more efficient is the replacement of the thermocouple / pilot control system ...
4
votes
2answers
678 views

Is Schedule 80 PVC Conduit Suitable for Short Directional Boring?

I'm running some electrical wire around where I'm building my house. There are two places that I'd rather not dig through: A driveway and a creek. The creek is the most important, because the state ...
4
votes
2answers
7k views

Can I terminate a ground wire to the neutral bus if the ground bus is full?

I have a Crouse-Hinds main load center. The ground bus is at the top left of panel and the neutral bus is at the bottom right of the panel. I want to add a 15 amp circuit for two outlets in my ...
4
votes
1answer
829 views

Is it against code to secure junction box using Liquid Nails?

I need to extend a 14/2 WG wire a few feet. To do this I want to add the extra wire using a junction box. The problem is that I can't get a good angle to nail the junction box down so I was wondering ...
4
votes
1answer
3k views

What is the code approved way to cut and patch fire rated drywall hung on the ceiling of a basement?

My new house is still under construction, and for code reasons the builder is required to hang fire rated drywall on the ceiling of the basement. I am sure the situation will arise eventually where I ...
4
votes
1answer
3k views

How should I build an exterior door landing pad?

I've got a building with several exterior doors (all opening inward). The slab and walk-up is about 18+" from the ground. Code requires that I have a 36"x36" landing pad outside each exterior door. ...
4
votes
1answer
2k views

Do the guidelines for holes in joists apply to band joists?

This question have a great answer with all the guidelines for drilling holes in joists. The question: Are the guidelines the same for band joists? A bit of context: I'd like to add an exterior ...
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5answers
160 views

What is code or common rule when securing multiple electrical lines?

What is common practice or code when running new electrical lines in a home(15 amp/20 amp) in a basement that feed up to the 1st and 2nd floor of a home? Is there a rule on how many wires can be run ...
4
votes
2answers
154 views

Does conduit terminated in backless gang boxes defeat the purpose of fireblocking?

My understanding for an ENT conduit (other than for future flexibility) was that it was fire-rated, to reduce the spread of fire/air-flow between floors. If the conduit went through fire-blocks or ...
4
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1answer
215 views

Can two ground rods be bonded via a PVC conduit above ground?

According to my understanding, if a supplementary ground rod is installed, it must be bonded to the existing rod via a buried 6 AWG cable (NFPA 70). However, because virtually every side of my house ...
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3answers
309 views

House has no plumbing vent — is this a solution?

I've been living in a fixer-upper for a while... I've been fixing a lot that was previously done wrong. I've finally gotten around to ripping out our first floor bathroom (two full bathrooms) and ...
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2answers
1k views

How should I run cables through interior wall to garage?

Please excuse me if this has been asked before, I searched previous questions but didn't find anything similar... I have my computer in our garage because of less noise, heat, dust, etc... also it's ...
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2answers
1k views

Is framing with screws legal?

A friend used trim head screws for ALL of the 2x4 framing (including the outer walls) of his 2400 sq. ft. house. The house uses 8x8s to carry the load; none of the 2x4 framing is load bearing. The ...
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3answers
159 views

What gauge wire do I need for my dryer?

I want to add a washer & dryer to my garage, but breaker box is on the wrong side of house. No matter which way I run the wire, its 110 feet of wire required. Will 8-3 with ground work? Or is ...
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votes
2answers
90 views

Can I run NM wire through this type of flex legally

This flex is sold along other types of NM wire molding, but I can't find anywhere where this product explicitly allows NM or not.
3
votes
4answers
492 views

Renovation for Dummies

I am about to close on the purchase of a small (1000sqft) cottage which, although it is habitable, is in desperate need of some tender love & care. I am an avid DIY nut and have have already done ...
3
votes
4answers
184 views

In a secondary panel, are grounding and neutral bus bars required on each side of the hot bus bars?

In a secondary panel (not a service panel), the grounded (neutral) bus bar is to be kept isolated from the grounding conductors (250.24(A)(5)). In article 408, the code has this to say... National ...
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1answer
12k views

Are there locations in a residence where a non tamper resistant receptacle can still be used?

Assume for a second that my jurisdiction has adopted 2011 NEC code as legally binding without significant amendment. This code requires (406.11) that 120V 15/20A outlets in all areas defined in NEC ...
3
votes
2answers
70 views

Are barrier terminal blocks or bus bars inside a junction or weather-proof box up to NEC code?

I'm going to be adding some Particle Photon relay control to some receptacles so I can remotely turn on and off appliances and lighting. I'm going to house the Photon board and relay in a ...
3
votes
2answers
293 views

Using fire retardant sealant for low-voltage cables through walls

I plan to wire my house with CAT6 cables, running inside the walls (drywall, wood). I would have to drill through the floor and probably through fire blocks in between the studs. Lot of guides advise ...
3
votes
1answer
5k views

Is there a specific NEC code specifying the distance between water heaters and electrical panels?

I have a condo in a large building with many identical units. Several times other owners have mentioned that the original layout of the utility room isn't up to code due to the proximity of the water ...
3
votes
2answers
507 views

Does NEC allow for recessed lighting to be placed in a vertical wall?

I am about to start running electrical in my bathroom remodel and I am considering options for lighting. I have a wall on one side that has 5.75" of space (this was for recessed shelving in an ...
3
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1answer
3k views

What is the maximum number of connections to pipes?

Does anyone have a table of the maximum number of connections that drain/vent pipes can have for a given size?
3
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2answers
7k views

Can I install lights on a 20 amp circuit that has receptacles already wired?

I have never been able to ask the following question and get a simple straight answer and would like to know why there is a controversy, and what the answer really is. The question: Can a 20 amp 12 ...
3
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2answers
1k views

What kind of light can I install in a small, low-ceiling coat closet?

Our Northern California house has a small coat closet (really a hallway with 2 doors and hooks for coats) between our front entry-way and our basement. It's a tiny space: 3 feet wide, 5 feet deep, and ...
3
votes
3answers
143 views

Do I have to connect the grounding electrode at a detached garage to the grounding electrode at the main structure?

Article 250.32(A) of the National Electrical Code, tells us that we need a grounding electrode at a detached garage. It also says that it has to be "installed in accordance with Part III of Article ...
3
votes
2answers
1k views

deck railing height with built-in benches?

If a deck (more than 30" off the ground) has a row of benches built-in to the perimeter, do the guard rails need to be measured from the height of the bench? I've been reading building codes they all ...
3
votes
3answers
203 views

Can I use old style individual faucets on a bathroom vanity?

We have an old home and would like to keep with the period where possible. I have a marble vanity top with individual faucets for hot and cold rather than a single spigot for both. I can buy brand new ...
3
votes
2answers
2k views

Can I drive a ground rod near a gas meter?

I am redoing the electrical in my 1940s house. The house has no grounding electrodes but the meter and panel are grounded to my water pipe outside in the front of the house. (This actually looks like ...
3
votes
2answers
227 views

What's involved in an electrical inspection to obtain a Certificate of Occupancy?

In an 80 year old house with no original certificate of occupancy (C of O). I have to obtain a C of O, which requires an electrical inspection. What should the inspection involve?
3
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2answers
8k views

In what year did venting bathroom exhaust out of the house become a code requirement?

what was the year for code for vented bathroom exhaust fan? What is the code for vented bathroom exhaust fan?
3
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1answer
86 views

Three-way switches to control top outlet of multiple receptacles

I am in the process of renovating the livingroom in my 1930's era house which only has two non-switched outlets in one 12x12 room. I would like some receptacles to have one switched and one ...
3
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1answer
36 views

How do I handle the grounded neutral for a simple switch?

I trying to move a switch, which is currently in a 2-gang box. The 2-gang box will need to stay in place (and covered with a plate) as it is also the junction of some other stuff (currently power ...
3
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1answer
97 views

Mystery Electrical Voltages in Duplex Junction Box

So I'm finally getting around to installing the ceiling to floor bookcase in my home office. There is a single duplex outlet that I intend to reverse from facing into the office, to facing outwards ...
3
votes
2answers
314 views

Locating buried electrical cable/conduit in yard

Our house, which we purchased about a year ago, has a shed in the back of the yard which has electricity and is roughly 100 ft away from the main house. From what I can tell the previous owner had ...