Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
South Wales Electric Power Co., graph
A graph showing the South Wales Electric Power Co. demand. A bar graph in black, blue and red ink, showing the maximum demand from the power generating station, power purchased from outside sources, and K.W's exported to grid. Loose within peach card file with other documents relating to Powell Duffryn Electrical System.
Pwnc
Diwydiant
Rhif yr Eitem
83.184I/61 (4)
Mesuriadau
unfolded
(mm): 588
unfolded
(mm): 277
Dosbarth
power generation and transmissionNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.