Screened porches and sunrooms are among the most popular additions to a North Carolina home. People often focus on making these into enjoyable living spaces, but they sometimes fail to take into account the wiring. The different environment makes these inherently more challenging than just wiring up a regular room. Here is a closer look at what you should know.
A Different Environment
These locations are often damp or wet. This means the electrical components need to be rated for at least a damp environment according to the National Electrical Code (NEW). Standard indoor cabling may be sufficient inside conduit in protected areas like a fully enclosed sunroom, but moisture-resistant wiring is likely required for anything more exposed.
You also need to think about proper sealing when it comes time to penetrate the walls, floors, or framing to pass wires into the space. Sealing points of penetration is critical to keeping out moisture, insects, and pests.
GFCI Protection
The damp or wet environment means that the electrical code requires ground fault circuit interrupters. GFCIs are a specific type of electrical outlet purpose-built to cut off power quickly in the event of a shock. The damp or wet environment is the most likely cause of a shock because it gives electricity an alternate path through water that collects on a porch.
All outdoor outlets in these environments must be GFCIs to comply with the National Electric Code (NEC). This includes all screened porch and deck wiring. It may also apply to a sunroom that’s not fully enclosed like a normal room.
Planning Around Circuit and Electrical Panel Capacity
Expanding electrical service to make a porch or sunroom more functional requires planning. Specifically, you need to plan for how you’re going to either integrate these areas into existing circuits or add new circuits to support the expansion. Typical porch lighting operates on 15-amp circuits, and the GFCIs usually operate on 15- to 20-amp circuits. If you intend to use electric heaters for supplemental heating, you should strongly consider a higher capacity circuit.
Remember that amperage capacity planning goes beyond just having a circuit breaker in the panel with enough support. The wiring needs to match the maximum amperage. Otherwise, there is a risk that the extra heat within the outdoor electrical upgrades will melt the insulation and present a fire hazard.
If you plan to use an existing circuit, make sure you won’t overload it. This is particularly important if you’re running the circuit off an existing low-capacity circuit, such as the one that supports a typical living room. Many of these only operate at 15 amps and already support other rooms.
Code Compliance
Local electrical codes tend to mirror the National Electrical Code. Notably, many municipalities operate a few years ahead or behind the current NEC. You should understand your locale’s electrical codes before starting electrical remodeling work.
Adding a new circuit almost always requires a permit. Likewise, outdoor renovations often demand permitting. While wiring a screened porch or sunroom may feel like a minor remodel, an inspection is still required. Know the process for when to order the first inspection and how to comply with it.
Bear in mind the real enforcer isn’t even your local code compliance office. It is the insurance company. Messing up the installation of electrical wiring is a quick way to end up with a voided homeowner’s insurance claim.
Expert Advice
Expert advice is essential when doing sunroom wiring and screened porch wiring. Our electricians can help you perform load calculations, manage moisture, and comply with local electrical codes. We can also address questions about failed inspections.
Putnam Mechanical is a family business that puts more than 75 years of combined professional electrical experience to work for you. We have been around since 2006 and take pride in our A+ rating with the Better Business Bureau. Our electricians are licensed to do work in both North and South Carolina. You can also relax knowing that we carry $5 million of insurance coverage.
We maintain business hours seven days a week and also offer 24/7 call answering. There are never any trip charges, mileage fees, or upsells when you deal with us.
If you need expert wiring for a screened porch or sunroom at your home in Mooresville, NC, or other parts of the Greater Charlotte area, contact Putnam Mechanical today.
