Performed an inspection of the arc chutes and contact surfaces on a 4000A WL type breaker. The O&M manual says I should replace the contact assemblies based on the contact wear indicator, but that is a pretty intense evolution involving the complete disassembly of the breaker. Does anyone know...
I'm trying to convince my boss that filling a plastic tank full of diesel exhaust fluid (DEF) to the very top with no air space is a bad idea due to thermal expansion.
The tank holds about 450 gallons, is not vented, but has a small forwarding pump attached to the top. My fear is that as the...
