Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Register Log in
  • Congratulations IDS on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: siena
  • Order by date
  1. siena

    Circuit breaker delay coordination

    Thanks for the tips, all of you. This is probably a much smaller, simpler application than you are accustomed to. The supply voltage is 120/208 and the main breaker is 100A. One of the loads is a 3-phase air conditioner that draws 46A steady state and 239A locked rotor. The breakers are...
  2. siena

    Circuit breaker delay coordination

    I'm accustomed to spec'ing circuit breakers so that the downstream breakers have a shorter delay than the upstream (main) breakers. But what do I do when I have a load with a high inrush current? I pretty much have to use a breaker with the longest available delay for that load, so I won't be...

Part and Inventory Search

Back
Top Bottom