Our Customers


G.M.G. Engineering Ltd. has an excellent record of satisfied customers in the electrical utility and large manufacturing sectors.  We are constantly searching for new methods and technology to improve our products.


Some of our recent projects include:  



Ontario Power Generation Inc.                                                  

  • Arc-resistant retrofits for most of Ontario Hydro’s medium voltage indoor substations
  • Medium voltage circuit breaker conversions to SF6 interrupting technology
  • Generator buses and I.P.B.
  • Manufactured a large variety of replacement parts for switchgear and circuit breakers.    


Toronto Hydro  

  • Arc-resistant refurbishing of indoor substations
  • Manufactured arc-resistant bus duct and outdoor transformer enclosure
  • 5 and 15 kV power switching centers
  • Medium voltage circuit breaker retrofitting
  • Manufactured a large variety of replacement parts for switchgear and circuit breakers
  • Manufactured  15kV outdoor type metal-clad load break switch cells (LBS-cells)


Manitoba Hydro  

  • Arc-proof refurbishing of medium voltage indoor and outdoor metal clad substations
  • Circuit breaker conversions from air-magnetic to vacuum interrupting technology
  • Manufactured outdoor switching replacement parts, flexible shunts, etc.    


Ottawa Hydro  

  • Arc-proof refurbishing of 15 kV metal clad substations


Hydro One

  • Moveable capacitor banks, arc-resistant, outdoor, metal-enclosed type
  • Metal-enclosed, arc-resistant, indoor type 15kV switchgear
  • Arc resistant 15kv medium voltage metal-clad cells


Enersource Hydro Mississauga

  • Circuit breaker retrofit conversion to vacuum interrupting technology
  • Various insulators, current transformer modifications and installations
  • Grounding and Testing Device for the substation


Major Automotive Manufacturer

  • 15 kV, 500 MVA metalclad switchgear for a new car plant



  • Manufactured 9 cell 15kV indoor type, arc-proof, metal-clad switchgear line-up



  • Manufactured generator ring segments, supports, bus bars, enclosures, circuit breaker parts, etc.
  • Non-segregated Bus Ducts for an overseas customer (busduct.htm)