More than a thousand Belco customers lost power yesterday morning after two power transmission cables failed.A Belco spokeswoman said yesterday: “At approximately 4.40am, two transmission cables out of the Prospect Substation failed, causing approximately 1,700 customers to lose power.“Crews and Belco Operations Centre immediately began work to re-route power to as many customers as possible.“By approximately 7.50am, the majority of customers were restored with power being back-fed via other lines.”Power to the remaining customers was restored by around 9.05am.Following the outage, Belco called for customers in the Prospect area to conserve energy while repairs to the cables are made.By cutting back on electricity use for the next 24 hours, Belco said customers would help to avoid further faults and power outages.“The company wants customers in the Prospect area to know that there is a possibility they may lose power for short periods or experience partial power over the next day or so,” the spokeswoman contained.The cause of the cable faults is under investigation.