Impedance bridge theory developed in 1830's and in the 1840's, C. Wheatstone improved it for accurate resistive/impedance testing. Note "magic eye" tube lower center.

This was the EDMONTON POWER Sign on the west side of the Rossdale Power Plant The Sign was removed in 1997 when the name was changed to Epcor It is now attached to the Edomonton Power Historical Foundation building

The panel pictured on the left is from one of the Direct Current (DC) motor generators installed at Rossdale Power Plant before 1915. In the 1960s it was used to control DC power from a motor generator set, which was a back up for the generator exciters ...

Clover Bar Generating Station 1969 was the first Power Plant in North America to install a spring supported concrete "Table" foundation The pedestal constructed of concrete posts and beams supported this table. Between the pedesal and table were 126 specially ...

This crest was installed on the west wall of the Rossdale Generating Station in 1966. Upon completion of the last unit, # 10 the station was rated at 405MW. It remained there until 1997 when the name was changed from Edmonton Power to EPCOR.  

The Boiler Pressure Gauge indicated the steam pressure within the boiler drum. The gauge was located 15 feet above the operating floor and clearly visible from the firing aisle. Manufacturer: The JAS Morgan Brass Manufacturing Company Ltd. Type: Bourden ...

Rossdale Power Plant had several steam engine-driven generators over the years. At least five of them were made by Belliss and Morcom. The triple expansion 750 kW Direct Current (DC) was installed to power the street railway and used until 1951.

This is a model of the first 165 MW turbine-generator at the Clover Bar Generating Station. The model was supplied by Escher Wyss and built to a scale of 1/4" = 1 foot. The Clover Bar Generating Station was built between 1967 and 1969. Manufacturer: Albert ...

This furniture was used in the Rossdale General Office around 1931. It is made of mahogany .    This is the table and chairs from the 1931 Office building

The steam boilers used in power plants can weigh several hundred tonnes. When a flame is inserted into the boiler furnace, the temperature of the boiler increases by several hundred degrees, thereby increasing the size of the boiler by as much as 3 inches ...