845 Stonewall Jackson Boulevard, Orangeburg, SC 29115 | 803.534.1040 | mccallthomas@mcteng.com 

 © 2019 McCall-Thomas Engineering Company, Inc.

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Electric Utility Services

Our Electrical Utility Service Division is a fully staffed shop located in Laurens, SC. We also have regulator and recloser breaker trailers to complete full maintenance in the field. Our Laurens shop and field crews service clients throughout the southeast varying from on-site support to in-house electric utility needs.


Through our extensive knowledge and experience in the utility industry we can provide our valued clients a variety of services tailored to meet their needs and budgetary requirements. Knowing each client’s needs are unique, we specialize in customizing a plan to fit and tailor our services to meet those individual needs.

Single Phase Reclosers

Curves set to factory specifications

Replace gaskets, liners and oil (new oil)

Stainless steel replaced if needed

Reclosers are labels per customer specifications

Units are tested per factory guidelines

Tanks are reconditioned and painted

One shot kits available

Reclosers are disassembled and checked out thoroughly for warped/cracked coils

TTR and Winding resistance testing for 16R to 16L. Hi-Pot and megger testing

Single & Three Phase Reclosers

Regulators are untanked and inspected internally for connections and potential problems including contacts and insulation

Factory replacement parts are used

Replace all gaskets 

External capacitor kits installed upon request 

Oil is replaced with new oil 

Recondition the tank and paint

Control panels can be upgraded per customer request

Single & Three Phase Transformers

TTR and Megger Test

Inspect internally for potential problems

Filter & replace the oil

Remove moisture from insulation & oil

Recondition tank & paint

Regulator Services/Inspections

ASTM D-3612 Dissolved Gas Analysis Test

ASTM D-1533b Moisture Content

ASTM D-971 Interfacial Tension

ASTM D-974 Acid Number

Battery Testing & Maintenance

Battery load testing

Battery impedance testing

Battery cleaning 

Battery change outs

Oil Breakers/Three Phase Reclosers

Complete inspection and testing 

Panel testing

Relay testing

Contact replacement if necessary

Oil is filtered or replaced

Recondition tank and paint

DGA & Fluid Quality Testing

TTR & Megger Test

Untank & check internally

Oil is replaced with new oil

All units are reconditioned & painted

Install new arrestors

Replace arrestors

Three Phase Reclosers

Reclosers are service and tested to factory standards

Oil is replaced with new oil

Micro switch upgrade kits available

Recondition tank and paint

ASTM D-877 Dielectric Breakdown

ASTM D-1500, 1524 Color Number & Visual Examination

Recondition tank & paint