QN: do I have a bad PDU?
Symptoms:3 servers, each connecting to 2 PDU's via dual power supplies. Each PDU was showing 6.3 A load. (15 A max.)
When moving all 3 outlets off PDU so it could be physically moved, PDU B tripped its overload breaker.
The nameplate load of the 3 servers is > 15A, but the combination of 2 x 6.3 (measured Amps) is not.
So, it seems either: - PDU B is bad
- the measurements of 6.3 A on each circuit is incorrect
- there is a power draw spike when servers switch from 2 power supplies to 1.
Does anyone know if the latter case is true? Or have other theories? Thanks