Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng 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: *

  1. MetalworkerMike

    Unusual fuse selection?

    I've got two Polytruder extruders and they both have a bunch of Dayton blowers on them (small 110V 7A FLA units) for cooling the barrel. I've found that each of these blowers is running through a Cooper GMA 10A fuse on the hot line. These are wee little 5mmx20mm fuses so they could fit them into...
  2. MetalworkerMike

    Overload settings.

    What is the current (har!) school of thought on what value to set an overload at on a standard motor starter? I've always used the FLA from the ID plate of the motor (if available) but it seems that some agencies recommend a significantly higher value (for motors with better than 40 degrees...
  3. MetalworkerMike

    Very high inrush current

    I've got an old granulator with what I believe to be around a 20 horse motor on it, 575V 3 phase, 20 or 30 years old, or older maybe. The ID plate is no longer legible. I put a fuse block in for 30A CC time-delay fuses, midget size, and this motor blows them like popcorn. The motor only...
  4. MetalworkerMike

    Rule of thumb for resistance of heater - when is it dead?

    In the plastic industry we use a lot of heater bands and cartridge heaters and other simple resistance heaters. It's easy to do the numbers to figure out what the resistance of a heater should be, given voltage and wattage, but is there a rule of thumb for how far away from this value the...
  5. MetalworkerMike

    Software for producing circuit schematics

    I'm looking for software that will run under Linux, preferably, that is free, but will allow me to produce rudimentary circuit schematics. The problem is that every piece of software I have found thus far seems to be focused on electronics. I want something that will allow me to do panel...
  6. MetalworkerMike

    Rapid contact wear on 100HP motor starter.

    I just finished cleaning the contacts on a 180A motor starter. It's running a 100HP 575V 3ph motor on a granulator (grinds up plastic... sporadic very heavy loading, then load reduces until it gets slammed again). The starter is a pretty good one - an Allen Bradley bulletin 100 B180 -...

Part and Inventory Search

Back
Top