I have several cabinets of servers in a datacenter and each of these cabinets is on a dedicated 208V 30A circuit. The load on each of these circuits is 24A and one circuit is slightly higher (~24.6A).
Recently, a datacenter technician (not an electrician) got in touch with me and said that my breakers in the panel were hot and that I should reduce the load on the circuits.
He took measurements using an infrared gun on three circuits. He said that the temperature was 117F for two of them and 110F for the other. He said that the maximum temp should be 104F. The ambient temperature in the room is roughly 72F.
A couple questions:
Is it normal that my breaker temps are reaching 117F on a circuit that's at 80% load or slightly higher?
Is the max temp for a breaker really only 104F? If humans and sensitive electronics can handle 104F, then surely a breaker could handle much higher temperatures...
I understand that it's impossible to give an exact answer to these questions when I'm unable to provide specifics on the breaker panel -- I'm just trying to get a general idea of what's 'reasonable' before I start pushing back on this request.