CALGARY, Alberta, May 6 (Reuters) - Enbridge Inc's ENB.TO 796,000 barrel per day Line 4, which carries crude oil from Edmonton, Alberta, to Clearbrook, Minnesota, was shut on Tuesday after a power outage, a company spokesman said.

Enbridge spokesman Graham White said the power outage stemmed from a failure on SaskPower's transmission line feeding two pump stations in Saskatchewan and Enbridge would know more about start-up times by Wednesday morning.

Two market sources in Calgary said Enbridge had told shippers power should be restored late on Wednesday.

(Reporting by Nia Williams and Scott Haggett; Editing by David Gregorio)

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Keywords: ENBRIDGE INC PIPELINE/OUTAGES