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LV Switchgear - IEC 61439 - Temperature rise

08/14/2026
posted in Electrical Engineering
by Anonymous Poster
The specification says, " LV Switchgear Bus bar temperature rise shall not exceed 45°C under rated current". The ambient temperature is around 45...
Views: 15, Comments: 1
Last comment 08/14/2026 by Doorman
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Turning Industrial Waste into High-Value Green Building Materials!

08/12/2026
posted in General Discussion
by Evelyn Li
Sharing a technical application on converting high-moisture industrial solid waste (ceramic residues, soil spoil, and waste gypsum) into high-strength...
Views: 27, Comments: 0
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What are Copper Nickel Flanges, and Where are They Commonly Used?

08/12/2026
posted in Manufacturing
by Rachana3
Copper nickel flanges are durable piping components made from a copper-nickel alloy, offering excellent resistance to corrosion, seawater, and high te...
Views: 7, Comments: 0
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Discussion Topic: 450 BHN Plates – Are They the Right Choice for Heavy-Duty Applications?

08/12/2026
posted in Manufacturing
by Radhika Solanki
450 BHN plates are a strong choice for heavy-duty applications where high wear resistance, impact strength, and durability are essential. They are com...
Views: 9, Comments: 0
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How Do You Verify the Authenticity of an ABREX 400 Plate?

08/12/2026
posted in Manufacturing
by Radhika Solanki
The best way to verify an ABREX 400 Plate is to check the Material Test Certificate (MTC), heat number, plate markings, manufacturer details, chemical...
Views: 10, Comments: 0
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How Do We Move EMC from a Final Compliance Test to a Sequence of Engineering Design Gates?

08/11/2026
posted in Electrical Engineering
by stancermtl
Too often, EMC is treated as something to verify after the layout, enclosure, cabling, and firmware are already fixed. By that stage, the available co...
Views: 18, Comments: 2
Last comment 08/13/2026 by vsar
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How Should SS 316 Capillary Tubing Be Specified for Instrumentation?

08/11/2026
posted in General Discussion
by kailashmittal
For an instrumentation application requiring small-diameter stainless steel tubing, what are the most important parameters to define when specifying S...
Views: 29, Comments: 0
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Socrates Meets the Age of the Internet

08/10/2026
posted in General Discussion
by redfred
One might consider this a philosopher's perspective on the Dilbert comic.
Views: 47, Comments: 2
Last comment 08/10/2026 by Troy36
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Choosing the Right Stainless Steel Tube Fittings for Instrumentation

08/10/2026
posted in General Discussion
by kailashmittal
I’m looking into stainless steel tube fittings for an instrumentation setup and wanted to hear how others usually approach the selection. The p...
Views: 40, Comments: 2
Last comment 08/11/2026 by Paul Roberts
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ONAN Transformer Radiator Oil Leak

08/09/2026
posted in Electrical Engineering
by Mathias Malandu
I have transformer that has sustained some damage to the fins. A previous cold weld repair was attempted; however, it has not provided a durable seal...
Views: 41, Comments: 4
Last comment 08/13/2026 by redfred
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IEC 61439-2 - Form of Separation - Metallic Versus Non Metallic Barrier

08/03/2026
posted in Electrical Engineering
by Anonymous Poster
sorry for the dumb question: The standard states that separation may be achieved by means of partitions or barriers (metallic or non-metallic), insula...
Views: 28, Comments: 0
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Has Anyone Recently Sourced Hastelloy C276 Flanges? Which Supplier Gave You the Best Quality and Documentation?

08/01/2026
posted in Manufacturing
by Rachana3
We recently worked with Parag Metals, and the quality, dimensional accuracy, and documentation were satisfactory. I've also heard good feedback about...
Views: 42, Comments: 2
Last comment 08/09/2026 by Anonymous Poster
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Chess Test (August 2026 Challenge Question)

07/31/2026 posted in Challenge Questions
Use the three white pieces to place the black king (e5) in checkmate. * You do not need to simulate moves to arrive here. * Abide standard chess pi...
07/31/2026 Views: 225, Comments: 21
Last comment 08/07/2026 by tkot
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Friendly Wager (July 2026 Challenge Question)

06/30/2026 posted in Challenge Questions
Your friend makes a $250 bet with you. He will pick a number between 1 and 1,000. If you can guess this number in 10 or less questions or guesses, yo...
06/30/2026 Views: 633, Comments: 12
Last comment 08/10/2026 by Calnet42
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Sensors and Senseless (June 2026 Challenge Question)

05/31/2026 posted in Challenge Questions
Scenario You are the on-call engineer for a hydrogen compressor skid. The control system has five sensors arranged in a serial telemetry chain. Each...
05/31/2026 Views: 332, Comments: 3
Last comment 06/01/2026 by StandardsGuy
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