GerryB
Senior Member
- Location
- woodbridge, ct. USA
I installed a 240v 20a outlet right below a customers panel for a heater he has. Sq D panel so I put in a 2p 20a Sq d breaker from a box of breakers that were used to begin with and were sitting in the garage for some years.
When I read the voltage at the outlet, 115 or 117 to ground only 200 between phases. Same at the panel which is 207volts. All other breakers read 207 between legs. My breaker read 200v and normal voltage to ground. Tried another used breaker I had brought and that one was even worse, 195v between. I am thinking they must have been bad and not gone bad from sitting and collecting dust, but they were removed from some trailers where they were used for electric heat. Also tried spraying one with contact cleaner to no avail. I have been using the sp ones in the box with no problem.
When I read the voltage at the outlet, 115 or 117 to ground only 200 between phases. Same at the panel which is 207volts. All other breakers read 207 between legs. My breaker read 200v and normal voltage to ground. Tried another used breaker I had brought and that one was even worse, 195v between. I am thinking they must have been bad and not gone bad from sitting and collecting dust, but they were removed from some trailers where they were used for electric heat. Also tried spraying one with contact cleaner to no avail. I have been using the sp ones in the box with no problem.