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GMC ELECTRICAL, INC.
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  • STAPERM Reference Electrodes
    • Permanent
      • Copper-Copper Sulphate
      • Zinc-Zinc Sulphate
      • Silver- Silver Chloride
    • Permanent with Coupons
      • Copper -Copper Sulphate
      • Silver-Silver Chloride
      • Zinc-Zinc Sulphate
    • Portable
      • Copper-Copper Sulphate
      • Zinc-Zinc Sulphate
      • Silver-Silver Chloride
  • AC Mitigation/Coupons
    • Ductile Iron Coupon
    • Stainless Steel Coupon
    • Steel Pipe Coupon
  • Impressed Current Anodes
  • Sacrificial/Galvanic Anodes
    • Aluminum Anodes
    • Magnesium Anodes
    • Zinc Anodes
  • Anode Controllers
  • Water Tank Material
    • Control Panels
    • Magnesium Anodes
    • Hardware
  • C.P. Test Equipment
    • Copper-Copper Sulphate
    • Zinc-Zinc Sulphate
    • Silver-Silver Chloride
  • C.P. Test Stations
    • STAPERM Probe Coupon Test Station
    • STAPERM Smart Test Station
    • STAPERM Test Stations
  • Line Markers
  • Pin Brazing
    • Permaseal
    • Pin Brazing
    • Tools
  • thermOweld
    • Molds & Bonds
  • Rectifiers
    • Cathtect U.S.A Rectifiers
      • ONAN Oil cooled Rectifier
      • SwitchMode
    • CerAnode Solar Rectifiers
    • Portable Rectifiers
    • Universal Rectifiers
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    Shop By Category

  • STAPERM Reference Electrodes
    • Permanent
      • Copper-Copper Sulphate
      • Zinc-Zinc Sulphate
      • Silver- Silver Chloride
    • Permanent with Coupons
      • Copper -Copper Sulphate
      • Silver-Silver Chloride
      • Zinc-Zinc Sulphate
    • Portable
      • Copper-Copper Sulphate
      • Zinc-Zinc Sulphate
      • Silver-Silver Chloride
  • AC Mitigation/Coupons
    • Ductile Iron Coupon
    • Stainless Steel Coupon
    • Steel Pipe Coupon
  • Impressed Current Anodes
  • Sacrificial/Galvanic Anodes
    • Aluminum Anodes
    • Magnesium Anodes
    • Zinc Anodes
  • Anode Controllers
  • Water Tank Material
    • Control Panels
    • Magnesium Anodes
    • Hardware
  • C.P. Test Equipment
    • Copper-Copper Sulphate
    • Zinc-Zinc Sulphate
    • Silver-Silver Chloride
  • C.P. Test Stations
    • STAPERM Probe Coupon Test Station
    • STAPERM Smart Test Station
    • STAPERM Test Stations
  • Line Markers
  • Pin Brazing
    • Permaseal
    • Pin Brazing
    • Tools
  • thermOweld
    • Molds & Bonds
  • Rectifiers
    • Cathtect U.S.A Rectifiers
      • ONAN Oil cooled Rectifier
      • SwitchMode
    • CerAnode Solar Rectifiers
    • Portable Rectifiers
    • Universal Rectifiers
      • Junction Boxes
      • Parts
  • Meters
  • Tools
  • Saftey Equipment
    • Gloves
    • Safety Glasses
    • Safety Vests
  • Makita Power Tools

    • Shop By Brand

  • View all Brands

    • Main Menu

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**GMC Electrical, Inc. will be closed from 12/19/2025 (mid-day) through 1/02/2026 for the Holidays. 
Normal business hours will resume of Monday January 5th, 2026. Have a Happy Holiday Season!

Shop by Category

  • STAPERM Reference Electrodes
    • Permanent
      • Copper-Copper Sulphate
      • Zinc-Zinc Sulphate
      • Silver- Silver Chloride
    • Permanent with Coupons
      • Copper -Copper Sulphate
      • Silver-Silver Chloride
      • Zinc-Zinc Sulphate
    • Portable
      • Copper-Copper Sulphate
      • Zinc-Zinc Sulphate
      • Silver-Silver Chloride
  • AC Mitigation/Coupons
    • Ductile Iron Coupon
    • Stainless Steel Coupon
    • Steel Pipe Coupon
  • Impressed Current Anodes
  • Sacrificial/Galvanic Anodes
    • Aluminum Anodes
    • Magnesium Anodes
    • Zinc Anodes
  • Anode Controllers
  • Water Tank Material
    • Control Panels
    • Magnesium Anodes
    • Hardware
  • C.P. Test Equipment
    • Copper-Copper Sulphate
    • Zinc-Zinc Sulphate
    • Silver-Silver Chloride
  • C.P. Test Stations
    • STAPERM Probe Coupon Test Station
    • STAPERM Smart Test Station
    • STAPERM Test Stations
  • Line Markers
  • Pin Brazing
    • Permaseal
    • Pin Brazing
    • Tools
  • thermOweld
    • Molds & Bonds
  • Rectifiers
    • Cathtect U.S.A Rectifiers
      • ONAN Oil cooled Rectifier
      • SwitchMode
    • CerAnode Solar Rectifiers
    • Portable Rectifiers
    • Universal Rectifiers
      • Junction Boxes
      • Parts
  • Meters
  • Tools
  • Saftey Equipment
    • Gloves
    • Safety Glasses
    • Safety Vests
  • Makita Power Tools

    • Shop by Brand

  • View all Brands

    • OUR CALIFORNIA LOCATION HAS MOVED TO 280 N. SMITH AVE CORONA CA, 92880

    Current Top Sellers

    • S.S. Hand Hole Cover S.S. Hand Hole Cover S.S. Hand Hole Cover S.S. Hand Hole Cover
      Quick view Details

      S.S. Hand Hole Cover

      MSRP:
      Now: $34.99
      Add to Cart
    • STAPERM™ Model CU-4-PT (Round Plug) STAPERM™ Model CU-4-PT (Round Plug)
      Quick view Details

      STAPERM™ Model CU-4-PT (Round Plug)

      MSRP:
      Now: $102.00
      Add to Cart
    • Clevis Insulators Clevis Insulators
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      Clevis Insulators

      MSRP:
      Now: $27.95
      Add to Cart
    • Pin Insulator Pin Insulator
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      Pin Insulator

      MSRP:
      Now: $21.95
      Add to Cart

    New Products

    • STAPERM CU-7-PCIR-20CM² with Smart Test Station STAPERM CU-7-PCIR-20CM² with Smart Test Station STAPERM CU-7-PCIR-20CM² with Smart Test Station STAPERM CU-7-PCIR-20CM² with Smart Test Station
      Quick view Details

      STAPERM CU-7-PCIR-20CM² with Smart Test Station

    • STAPERM CU-7-PCIR-100CM² with Smart Test Station STAPERM CU-7-PCIR-100CM² with Smart Test Station STAPERM CU-7-PCIR-100CM² with Smart Test Station STAPERM CU-7-PCIR-100CM² with Smart Test Station
      Quick view Details

      STAPERM CU-7-PCIR-100CM² with Smart Test Station

    • STAPERM CU-7-PCIR-100CM² STAPERM CU-7-PCIR-100CM² STAPERM CU-7-PCIR-100CM² STAPERM CU-7-PCIR-100CM²
      Quick view Details

      STAPERM CU-7-PCIR-100CM²

    • STAPERM CU-7-PCIR-20CM² STAPERM CU-7-PCIR-20CM² STAPERM CU-7-PCIR-20CM² STAPERM CU-7-PCIR-20CM²
      Quick view Details

      STAPERM CU-7-PCIR-20CM²

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    GMC Electrical, Inc.
    280 N. Smith Ave.
    Corona, CA 92878
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