What is the corrective measure when B Phase of load center is not providing power. Does the entire circuit breaker panel have to be replaced?


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    Sure, in the sense that replacing a car computer is a very expensive way to reset a car computer. I think more troubleshooting is called for. Can you provide more information? – Harper - Reinstate Monica Jun 8 '19 at 18:33
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    Are both phases from the utility providing power? Is your main shutoff breaker passing power to both legs of the panel? – jwh20 Jun 8 '19 at 20:32
  • The most likely cause is at the pole. Call the power company. – Jim Stewart Jun 8 '19 at 22:23
  • Do you have all three phases present at the feed lugs? I'd check for voltage there as a first stop.... – ThreePhaseEel Jun 8 '19 at 23:35
  • Where are you is this 3 phase power or split phase (U.S. type power), in the US split phase is commonly referred to as legs A leg and B leg as they are on the same phase, as @jim Stewart suspected the problem is usually from the power company but can be the main breaker or connections to the breaker/ buss. Where you are at would help , if in the U.S. contact your power company, and tell them you have lost a leg, they usually fix these things quickly as they can cause all kinds of problems. – Ed Beal Jun 10 '19 at 16:00

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