01Jefferson Electric’s Transformer Background and Successor
Jefferson Electric is an established name in dry-type transformers, including general-purpose and specialty low- and medium-voltage equipment. Its product range is associated with dry-type units as well as control, buck-boost, drive-isolation and harmonic applications. Nameplates bearing the Jefferson Electric name may be current or legacy equipment.
The company was included in ERMCO’s 2022 acquisition of Spire. Jefferson was subsequently acquired in a 2024 transaction to form Voltaris with Pioneer CEP; the successor relationship is associated with Voltaris Power and Mill Point Capital. That transaction history does not make California Transformer Buyer an authorized representative or affiliate.
02What Jefferson Electric Transformers We Consider
California Transformer Buyer evaluates used, pulled, surplus and new-surplus transformers owned by sellers in California. That can include Jefferson Electric dry-type equipment and specialty units such as control, buck-boost or drive-isolation transformers. New-surplus means never energized, typically crated or on skids; tell us whether the unit has been energized and how it has been stored.
If you have a Jefferson Electric pad mount transformer or another liquid-filled configuration, send its nameplate information and photos so Rocky can assess the actual equipment. Do not assume the brand or product category establishes suitability. For dry-type equipment details, see our guide to dry-type transformer construction and applications.
- Used and previously energized units
- Removed or decommissioned equipment
- Spare transformers and project leftovers
- New-surplus, unenergized units
- Single transformers or mixed lots
03How to Find a Jefferson Electric Transformer Nameplate
Look for a fixed manufacturer plate on the transformer enclosure or tank, where it can be photographed from a safe position. The Jefferson Electric transformer nameplate may show the serial number, catalog or style number, date or year of manufacture, kVA rating, phase, voltage, taps, impedance and connection information. Plate layouts vary by age and product type, so fields may be arranged differently or absent.
For a dry-type unit, the plate is commonly attached to the enclosure. On other configurations, the identification plate may be on an exterior surface. Do not open compartments or approach equipment you are not authorized to access. If the plate cannot be photographed safely, ask the owner’s qualified electrical contractor to help. Our transformer nameplate guide explains common fields.
04What to Send for a Jefferson Electric Transformer Review
A readable plate photo is the best starting point. Send a full view of the unit as well, so its enclosure, configuration and visible condition can be understood. If a field is unreadable, note that rather than guessing; a catalog or style number can help distinguish equipment but does not replace the ratings and condition details.
Include the following information when available. You may text photos to (951) 403-5738 or submit them through the contact form. Take photos only from a safe position and of equipment you are authorized to access.
- Serial number, catalog/style number and year
- kVA rating, phase and primary/secondary voltage
- Taps, connection and impedance, if shown
- Quantity, California location and current condition
- Test reports and other equipment records
- For liquid-filled units: fluid and PCB documentation, if available
05Rating, Age and Condition Matter More Than Brand
A Jefferson Electric label helps identify the manufacturer, but it does not set a unit’s value by itself. Buyers also consider kVA or MVA, phase, primary and secondary voltage, connection, age, condition, winding material when stated, and whether the transformer is used or new-surplus. A common rating and voltage configuration may have a different resale market from a specialized unit.
Visible damage, missing parts, leaks on liquid-filled equipment and incomplete records can affect the review. Test reports may help establish condition; useful records depend on the transformer type and its history. Review the factors that affect a used transformer’s value for more detail. If the unit is a larger station-class transformer, its rating, accessories and transport configuration are also important; see our substation transformer buying information.
06How the California Offer and Pickup Process Works
Start by calling or texting Rocky at (951) 403-5738, or send the information through the website. After reviewing the photos and details, Rocky may ask about ownership, test reports, environmental records, site access or removal requirements. The seller must own the equipment or have authority to sell it; property owners cannot sell utility-owned transformers.
If the unit is a fit, you receive a written offer that states the price, what is included, who handles loading or rigging and freight, and payment terms and timing. Those terms are set in writing before pickup. Reviewing your transformer costs nothing and creates no obligation. For the full process, visit how to sell your transformer.
- Call, text or submit the online form
- Send photos, quantity, location and condition
- Answer follow-up questions about records and access
- Review written terms before any pickup is scheduled
07Independent Jefferson Electric Transformer Buyer in California
California Transformer Buyer is an independent buyer run by Rocky and is not affiliated with Jefferson Electric, Voltaris, Mill Point Capital, ERMCO or any utility. The company considers transformer equipment from sellers located in California only and serves the state from the Inland Empire.
If you have a Jefferson Electric transformer available, send the nameplate and condition details for review. You can also use the contact page to request an offer or read about selling new-surplus transformers if the unit has never been energized.
FAQJefferson Electric FAQ
Does California Transformer Buyer purchase every Jefferson Electric transformer?
No. Each transformer is reviewed individually, and an offer is not guaranteed. The decision depends on details such as rating, voltage, configuration, condition, location, available records and current resale demand. Send the nameplate and overall photos to Rocky for a review rather than relying on the Jefferson Electric brand alone.
Where is the serial number on an older Jefferson Electric unit?
The serial number is generally printed on the manufacturer’s identification plate, often near other fields such as the catalog or style number and electrical ratings. Older plates can be worn, painted over or difficult to photograph, and the exact layout varies. If you cannot read it from a safe, authorized position, ask a qualified electrical contractor to assist; do not open equipment.
Can I sell a Jefferson Electric transformer without its test reports?
You can submit it for review without test reports, but the available information may affect what can be established about the unit. Send the nameplate, photos and an accurate description of known condition, then mention which records are missing. Do not arrange testing or handling yourself; consult qualified electrical or environmental professionals as appropriate.
What should I do if the transformer’s PCB status is unknown?
Do not infer PCB status from the brand or appearance. Share any existing labels, test results and fluid or maintenance records, and rely on testing, documentation and qualified environmental professionals to determine the applicable handling pathway. PCB requirements depend on facts about the equipment and its contents; this information is not legal advice.
Will you consider a Jefferson Electric transformer that is still installed?
You can submit information about an installed unit, but the owner’s qualified electrical contractor or serving utility must handle electrical isolation, disconnection and any work needed to make it available. California Transformer Buyer can review photos and details first, then state in writing who handles rigging and freight if an offer is made. Never move or access energized equipment yourself.
Can I sell a Jefferson Electric transformer located outside California?
California Transformer Buyer buys equipment from sellers located in California only. If the transformer is in California, send its location along with the nameplate, overall photos, quantity and condition. If it is utility-owned, the property owner cannot sell it; the seller must own the unit or have authority to act for its owner.