Mike Dolt Enterprises
Mike Dolt Enterprises
User: solarken, Location: Hudson, OH, USA
Asked on: Friday, July 11, 2025 at 8:46 pm EDT
Answered on: Friday, July 11, 2025 at 8:46 pm EDT
Question: I am installing a solar PV system at a new construction home and have been working with the homeowner through his home planning and building process. I was onsite recently to begin the install, and as I was working on the AC interconnection I saw some things that the electrician who wired the house did that I thought was pretty shabby, and would like other opinions.This site has 320A service with a meter main with dual 200A breakers on the outside, feeding two MLO loadcenters as shown in the photo. The loadcenter on the right is where I will interconnect, and the loadcenter on the left will have a transfer switch installed between the feeder from the main to the lugs, so that a propane generator can backup the loads on that panel when the grid is down.The electrician wired L1 on the left panel as black and L1 on the right as red. He also was not consistent with 240V loads as to the color of wire he used for L1 and L2, as far as matching the phase and color. And in the left panel you can see where there is a missing breaker, there is a red hot going to the terminals for the missing breaker, and no neutral for the missing breaker, like maybe it was to be a multiwire branch circuit but he did not have a 2-pole breaker, so one branch is dead.He also installed the supplemental ground bar in the right panel with a single screw, on a diagonal, when these Leviton loadcenters come with 2 screws with intended locations for the ground bar either above the bus or below the bus using the 2 holes provided.There are other issues, like several spliced wires in each loadcenter that extend to the other loadcenter, but I will give him the benefit of the doubt that maybe there were changes in which circuits were needed to be backed up as he was working.What do you think? Should I say something to the homeowner? It looks to me like the electrician didn't know what he was doing or just doesn't care, and makes me question if there are other issues in the house.I mean this is new construction, where it is easy to make things neat and orderly from the getgo. I would never do these things, and for me or the generator guy that will be coming soon, at the very least it is confusing. I need to match L1 and L2 in these panels because I am installing CTs for monitoring grid current in both loadcenters, so having to deal with confusing wiring is a bit frustrating.
You've presented a valid concern about the quality of the electrical work in this new construction. Here's a breakdown of the issues and how to approach them
Specific Issues and Code Violations (Potential):
Phase Identification (L1 color inconsistency)
This is a significant issue. While not a direct code violation in all jurisdictions (some permit red for L1 in 208V systems), it's
extremely poor practice and introduces a high risk of confusion and potential for dangerous misconnections, especially during future maintenance or modifications. Proper phase identification is critical for safety and troubleshooting. Inconsistent 240V Wiring
Mixing up the color of L1 and L2 on 240V circuits is also poor practice. It makes troubleshooting difficult and increases the risk of incorrect connections.
Missing Breaker and Unused Hot Wire
This is very concerning. Abandoned conductors, especially hot ones, are a safety hazard. It's a potential code violation if not properly terminated or insulated. Abandoned multi-wire branch circuits are a code violation.
Improperly Installed Ground Bar
The supplemental ground bar should be securely mounted with both provided screws. A single, diagonally placed screw is insufficient and may compromise the grounding connection. This is a code violation, as it must be installed per manufacturer's instructions.
Spliced Wires Between Panels
While not necessarily a code violation (if done properly and in accordance with the NEC), it's generally poor practice in new construction. Excessive splicing increases the risk of loose connections and future problems. Your assumption about circuit changes is plausible, but it should still be done with quality in mind.
Missing Neutral on multiwire branch circuit
This is a code violation that could result in damaging equipment due to overvoltage, or result in a fire.
Why This Matters
Safety
The most critical concern is safety. Poor wiring practices can lead to electrical shocks, fires, and equipment damage.
Reliability
Sloppy work often indicates a lack of attention to detail, increasing the likelihood of future electrical problems.
Troubleshooting
Inconsistent and poorly labeled wiring makes troubleshooting difficult and time-consuming.
Compliance
Some of the issues you've identified are potential code violations, which could lead to inspection failures.
System Performance
In your specific case, the incorrect wiring can make it difficult to properly install CTs for monitoring grid current, and for the generator installer who will be connecting the transfer switch.
How to Approach the Homeowner
Document Everything
Take clear photos and videos of all the problem areas you've identified. Keep a detailed written record of your observations.2.
Focus on Safety and Functionality
Frame your concerns in terms of safety, potential hazards, and the impact on the electrical system's performance and reliability. Avoid accusatory language.3.
Present the Facts Calmly and Objectively
Explain the specific issues you've found, using clear and understandable language.4.
Explain the Potential Consequences
Highlight the potential risks associated with the poor wiring, such as electrical shock, fire, and difficulty troubleshooting.5.
Suggest Solutions
Recommend that the homeowner have a qualified electrical inspector or another licensed electrician review the work and correct any deficiencies.6.
Be Professional
Maintain a professional and respectful demeanor throughout the conversation.7.
Express Your Concerns Professionally:"I need to address some concerns regarding the electrical work in the house. I've noticed some inconsistencies in the wiring that could potentially impact the system's safety and reliability. For instance, the phase identification (L1, L2) isn't consistent between the panels, which can make troubleshooting difficult and could lead to misconnections during future maintenance. Additionally, the ground bar in the right panel isn't properly mounted, and I've found an unused hot wire in the left panel. I recommend having a qualified electrician review the work and correct any deficiencies to ensure everything is up to code and safe."8. Emphasize Your Responsibility
State that you have an ethical and professional responsibility to bring these issues to the homeowner's attention.
Things to Avoid
Badmouthing the other electrician
Focus on the issues, not on personal attacks.
Accusing
Avoid using accusatory language. Stick to factual observations.
Promising to Fix Everything Yourself (Unless You Are Comfortable and Qualified)
It's best to recommend a qualified electrician to review and correct the issues.
Recommendations
Suggest an Independent Electrical Inspection
This is the best way to ensure the electrical system is safe and up to code. A qualified inspector can identify any deficiencies and recommend corrective actions.
Consider a "Paper Trail"
If you have serious concerns and the homeowner is resistant, you may want to document your concerns in writing (e.g., email) to protect yourself from liability.*
Your Duty to Report
In some jurisdictions, you may have a legal or ethical obligation to report serious electrical code violations to the local building department. Check with your licensing board or local authorities.
In summary, you have a legitimate concern about the quality of the electrical work. It's important to communicate these concerns to the homeowner in a professional and constructive manner, emphasizing safety and the potential impact on the electrical system's performance and reliability. Recommending an independent inspection is a good way to ensure the issues are addressed appropriately. Good luck! Flag for review