| http://www.w3.org/ns/prov#value | - For example, the electrical power 1582 may be feed at a high voltage, for example 132 kV, to a transformer 86 and let down to a lower voltage, for example 6600 V, before being fed to an electrical resistance heater element located in a heater well 1587 located in the subsurface formation 1584.
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