Okay, finding a local engineer who can re-certify a switchboard for a line-side tap for solar PV in Sacramento and satisfy the AHJ (Authority Having Jurisdiction) is your goal. Here's a breakdown of how to find someone, what to look for, and some potential starting points

Understanding the Requirements
AHJ Specifics

The most crucial step is to clarify exactly what the AHJ requires. They may be looking for a Professional Engineer (PE) stamp, a field evaluation by a Nationally Recognized Testing Laboratory (NRTL) such as UL or CSA, or something else. Get this in writing if possible. Knowing exactly what they want will save you time and money.

Switchboard Documentation

You'll need all existing documentation for the switchboard: Original manufacturer's nameplate information, drawings, specifications, and any previous certification reports. This is essential for any engineer to evaluate it.

Line-Side Tap Details

The engineer will need all the specifications for the line-side tap and the solar PV system it will connect to. This includes voltage, current, conductor sizes, overcurrent protection, etc.

Finding a Qualified Engineer/Company

Here's a multi-pronged approach:1. Direct NRTL Contacts



UL (Underwriters Laboratories)

Contact UL directly. They offer Field Evaluation services. Look for contact information on their website (UL.com) for your region. Explain your project and ask for a quote and contact information for a local representative. UL is a good starting point, though they can be expensive.

CSA (Canadian Standards Association)

Similar to UL, CSA also offers Field Evaluation services. Check their website (CSAGroup.org).

Intertek (ETL)

Another major NRTL that offers field labeling services. Visit their website (Intertek.com).

TUV SUD

TUV SUD is another NRTL that offers field evaluation services. They may have resources in the area.2.

Local Engineering Firms (with Power/Electrical Focus)



Search Terms

Use search terms like: "Sacramento electrical engineering" "Sacramento power systems engineering" "Sacramento switchboard certification" "Sacramento UL field evaluation" "Sacramento CSA field evaluation"

Look for

Firms that specialize in power systems, electrical distribution, and/or testing and certification. Carefully review their websites to see if they have experience with switchboards and field evaluations.

Call and Ask

Don't be afraid to call potential candidates and ask directly: "Do you have experience with field evaluations of switchboards for line-side taps?" "Are you familiar with the requirements of [Name of AHJ] for this type of project?" "Do you have a Professional Engineer (PE) on staff?" (If required by the AHJ) "Do you have experience working with UL, CSA, or other NRTLs?"3.

Solar PV Installers/Contractors



Ask for Referrals

Experienced solar PV installers in the Sacramento area have likely encountered this situation before. Ask them if they can recommend an engineer or firm they have worked with successfully.4.

Local Electrical Contractors (Commercial/Industrial)

Larger electrical contractors that work on commercial and industrial projects often have relationships with engineers or testing labs.5.

IAPMO (International Association of Plumbing and Mechanical Officials)

IAPMO offers field evaluation services and may have representatives in your area.

What to Look For in an Engineer/Company Experience

Proven experience with switchboard evaluations, especially for line-side taps.

Professional Engineer (PE) License

If the AHJ requires a PE stamp, this is non-negotiable. Verify the engineer's license is active and in good standing in California. You can often check this online through the California Board for Professional Engineers, Land Surveyors, and Geologists.

NRTL Affiliations

Experience working with UL, CSA, or other NRTLs. Some engineers may have a working relationship or preferred status with a particular NRTL, which can streamline the process.

Insurance

Make sure the firm has adequate professional liability (errors and omissions) insurance.

Communication

Clear and responsive communication is essential. You need someone who can explain the process, answer your questions, and work effectively with the AHJ.

Cost

Get quotes from multiple sources. Be sure the quote includes all expected costs (engineering fees, travel expenses, NRTL fees, etc.).

Key Questions to Ask Potential Engineers

"What is your process for evaluating a switchboard for a line-side tap?" "What specific codes and standards will you be evaluating the switchboard against?" "What is your experience working with [Name of AHJ]?" "What is your estimated timeline for completing the evaluation and providing a report?" "What is your relationship with UL/CSA/etc.? Can you coordinate the field evaluation with them?" "What are your fees and how are they structured?" "What is the best way to contact you?"

Important Considerations



Timeline

Field evaluations and re-certifications can take time. Start the process as early as possible to avoid delays.

Cost

Be prepared for the cost of the evaluation and any necessary upgrades to the switchboard to meet current standards.

Compliance: Ensure that the entire installation (including the line-side tap and the solar PV system) complies with all applicable codes and standards.Good luck with your project! Finding the right engineer is key to a smooth and successful installation. Flag for review