https://www.electrical-contractor.net/forums/ubbthreads.php Electrical Technical Reference RSS Feed en-us Sun, 25 Jan 2026 11:09:40 +0000 UBB.threads https://www.electrical-contractor.net/forums/images/general/default/rss_icon.gif https://www.electrical-contractor.net/forums/ubbthreads.php https://www.electrical-contractor.net/forums/ubbthreads.php/topics/214926/basic-derating-examples.html#Post214926 *** BASIC DERATING EXAMPLES ***

For:
Single Phase Three Wire
And
Three Phase Four Wire
Multiwire Circuits.

02/08/2015 19:03:00 PST BY S.E.T.

PATH: D:\DESIGN_01\CAD_EDUCATIONAL01\ACAD_EDU01\ACAD_EDU\
System_Analysis_042009\DERATING\*.*
Text: \System_Analysis_042009\DERATING\DERATING_TEXT01.txt
1 (...)

]]> Mon, 09 Feb 2015 07:51:01 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/214926/basic-derating-examples.html#Post214926 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/214921/two-motor-start-stop-drawing.html#Post214921
--Scott (EE)




Drawing of Two (2) AC Induction Motors, controlled by a single Start / Stop control circuit.

Both Motors on simultaneously, one stops when stop button pressed, remaining Motor delayed off when stop button pressed.

Created per request (...)

]]> Sun, 08 Feb 2015 20:40:17 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/214921/two-motor-start-stop-drawing.html#Post214921 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/214920/misc-transformer-schematics.html#Post214920
--Scott (EE)











]]> Sun, 08 Feb 2015 20:33:01 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/214920/misc-transformer-schematics.html#Post214920 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/208150/example-panel-schedules-per-thread-at-nec-area.html#Post208150
In regard to the Thread Size Feeder?, located at the NEC Forum Area, I have compiled and attached (4) Panel Schedules for example descriptions.

Basic Descriptions:

a. System = 208Y/120V 3 Phase 4 Wire,
b. Panelboard(s) are 30 Space, 200 Amp, 3 Phase 4 Wire, (...)

]]> Sun, 30 Dec 2012 03:06:26 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/208150/example-panel-schedules-per-thread-at-nec-area.html#Post208150 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/204523/load-calculations-example-multi-family-dwelling.html#Post204523
-- Scott

Multi Family Dwelling Load Calculation Database

]]> Sun, 18 Dec 2011 04:14:34 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/204523/load-calculations-example-multi-family-dwelling.html#Post204523 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/204102/single-phase-3-wire-transformer-animated-gif.html#Post204102 /yay.gif" alt="yay" title="yay" height="35" width="33" /

Below is a Crude Animation, depicting the Current Flows in Primary and Secondary Windings of a Single Phase Transformer, with a Center Tapped Secondary Winding.

Animation displays Current Flow on Primary & Secondary (...)

]]> Sat, 12 Nov 2011 03:23:40 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/204102/single-phase-3-wire-transformer-animated-gif.html#Post204102 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/201491/electrical-planset-refrigeration-equipment.html#Post201491 POST #8

Project:
Larry, Moe and Curley Cold Storage - Triplestooge Distribution Center

This Post Contains The Following Plan Sheets:

E-4.0: Interior Lighting Plan,

E-4.1: Interior Lighting Layout (Dimensions) Plan.

--- END OF ATTACHED PLAN SHEET POSTS FOR THE LMC TRIPLESTOOGE PROJECT ---

-- Scott

]]> Sun, 05 Jun 2011 00:07:02 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/201491/electrical-planset-refrigeration-equipment.html#Post201491 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/193117/transformers-feeders-3-phase-4-wire-wye.html#Post193117 Transformers & Feeders: 3 Phase 4 Wire Wye


Five Drawings of Transformer Setups (Connection Schemes);
Primary and Secondary Feeders, Plus OCPDs and Panelboards for:
3 Phase 4 Wire Wye Transformers
(Two Voltage SDS)
NOTE: Click on Image to view Full-Sized (...)

]]> Fri, 19 Mar 2010 12:59:03 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/193117/transformers-feeders-3-phase-4-wire-wye.html#Post193117 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/193116/transformers-feeders-3-phase-3-wire-wye.html#Post193116
Five Drawings of Transformer Setups (Connection Schemes);
Primary and Secondary Feeders, Plus OCPDs and Panelboards for:
3 Phase 3 Wire Wye Transformers
(Single Voltage SDS)
NOTE: Click on Image to view Full-Sized (...)

]]> Fri, 19 Mar 2010 12:49:26 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/193116/transformers-feeders-3-phase-3-wire-wye.html#Post193116 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/193115/transformers-feeders-3p-4wire-closed-delta.html#Post193115
Five Drawings of Transformer Setups (Connection Schemes);
Primary and Secondary Feeders, Plus OCPDs and Panelboards for:
3 Phase 4 Wire Closed Delta Transformers
(Two Voltage SDS)
NOTE: Click on Image to view Full-Sized (...)

]]> Fri, 19 Mar 2010 12:40:00 +0000 Scott35 https://www.electrical-contractor.net/forums/ubbthreads.php/topics/193115/transformers-feeders-3p-4wire-closed-delta.html#Post193115