<?xml version="1.0" encoding="UTF-8" standalone="no"?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0"><channel><title>Electrical Knowhow</title><description>online electrical courses software books spreadsheets electrical design sound system design voltage, power transformer current voltage drop generator circuit breaker fuse cable wire power factor cad drawing nec nfpa short circuit over voltage switch receptacle light fixture lighting, grounding bonding earthing lightning raceway switchgear panel busbar automatic transfer switch demand factor capacitor resistance battery ampere horsepower watt switchboard single line diagram bill of quantities</description><managingEditor>noreply@blogger.com (SkyBlue)</managingEditor><pubDate>Sun, 29 Mar 2026 14:03:17 +0300</pubDate><generator>Blogger http://www.blogger.com</generator><openSearch:totalResults xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/">555</openSearch:totalResults><openSearch:startIndex xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/">1</openSearch:startIndex><openSearch:itemsPerPage xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/">1000</openSearch:itemsPerPage><link>http://www.electrical-knowhow.com/</link><language>en-us</language><itunes:explicit>no</itunes:explicit><itunes:subtitle>online electrical courses software books spreadsheets electrical design sound system design voltage, power transformer current voltage drop generator circuit breaker fuse cable wire power factor cad drawing nec nfpa short circuit over voltage switch recep</itunes:subtitle><itunes:owner><itunes:email>noreply@blogger.com</itunes:email></itunes:owner><item><title>UPS Sizing Calculations Course</title><link>http://www.electrical-knowhow.com/2024/06/UPS-Sizing-Calculations-Course.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Mon, 24 Jun 2024 13:12:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-64203135418374922</guid><description>&amp;nbsp;&amp;nbsp;

Course Description:

This course is intended to prepare the target persons with the ability to
perform Stationary UPS Sizing Calculations.



The
targeted Persons:

Design engineers, new graduate engineers, under graduate engineering students.


Skills
Development:


On completion of this course the target person will be able to:


&lt;!--[if !supportLineBreakNewLine]--&gt;
&lt;!--[endif]--&gt;</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiF4QFUY0PdCQtllUBtknTRIpU5g6MdLJ3KIffG3scc4DahVbDVcSwZgrn_NcPaeKH-i4eevA-G_O6I4_egAqyWDJVI-sX9IrTO644b0fccbgcxezsdKz9xAIoY79xdzxvoxtJD9oAIxoOkrru5tfF6fMEYcgnvnm_Bxf90HJL-8tqxFfDjmEyYhEYaO6s/s72-w268-h400-c/High-Power%20Systems%20typically%2030-500kVA.png" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item><item><title>Stationary UPS Sizing Calculations – Part Seven</title><link>http://www.electrical-knowhow.com/2024/06/UPS-Floor-space-requirements -and-Testing.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Tue, 11 Jun 2024 06:43:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-5977937829858635017</guid><description>&amp;nbsp;in Article “Stationary UPS Sizing Calculations – Part Six”, we explained the following:

1- Battery
Room Design Criteria

2- Ventilation
Design Criteria

3- Battery
Room Ventilation Calculations:

NFPA
method,British
(metric) units method.



4- Requirement
of Air Conditioner for UPS

Today, we
will explain the Requirements
for UPS Installation and Testing.

&amp;nbsp;




 
  
  &amp;nbsp;
  </description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMnnhdM8gC5O6PnxnsjZUUvfWzGlSwXdjleJQOKFTCy7dhtYTjozSRPY_3R1lI7f6ogfCnVqRuzhbbCJPPBDk0Pmcg7hdBggIn1oGryAo40NNWVMe_ew7qlXY4_ypqUTymXhwYACS-fBIh-qMB1q47232gV9vXZBjurxBKik85pmBsHuZskBt-5Wp_emI/s72-w640-h314-c/fig-1.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item><item><title>Stationary UPS Sizing Calculations – Part Six</title><link>http://www.electrical-knowhow.com/2024/05/UPS-Battery-Room-Ventilation-Calculations.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Thu, 30 May 2024 07:48:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-3130679455629184361</guid><description>in Article “Stationary UPS Sizing Calculations -Part Four”,&amp;nbsp;we explained Selection and sizing of UPS
protective devices (CBs or Fuses).

Also, in Article “Stationary UPS Sizing Calculations – Part Five”, we explained the following:

Selection and
sizing of UPS Cables,Sizing a
generator set for UPS system



&amp;nbsp;

Today, we
will explain the Battery Room Ventilation Calculations.

&amp;nbsp;

&amp;</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgb-29KzqH3WJsMcTVLvv2KxUo0svU7iTVV0B1PgHY4H0h18hXVx7acnBCkZib1B6E-jAJj-GU116l69qi5QhqIg9T6Mmthe39WdMUgoDN1iLeO6ESk2yw7mu5C5Civ_BKLb3wu04AKanHq4L7IxqTHuqkcif9BPOtT0RCvSRGZGoC6t9gSMynraCr4P9I/s72-c/Battery%20Room%20Design%20Criteria%20.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item><item><title>Stationary UPS Sizing Calculations – Part Five</title><link>http://www.electrical-knowhow.com/2024/05/Sizing-Cables-and-Generator-For-UPS.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Sun, 12 May 2024 15:00:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-3616902290778885261</guid><description>As we stated in the previous article “Stationary
UPS Sizing Calculations
-Part One”&amp;nbsp;That Stationary UPS Sizing Calculations
include:

The UPS sizing calculations,Rectifier/Charger sizing calculations,Inverter &amp;amp; Static Switch sizing
calculations,The Battery Sizing Calculations.







We explained the UPS sizing calculations in
the above article and we explained in article “Stationary UPS</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMCPD9Q1Xu5Z7goga4J3AQowj2DPHVpxFY4uVNG4zP9WtCZZvTCoi7jNqC14LaldVGT2jfkz0nMToX9HGDyY6LM7ROCTteXVMPD8zrcwJYGfdNS_XBHbdxTQu36f9dtJGEAEO5gEN8_xFWqF5NRZkg0t257y1d02i3TgXsaLVxsMBmpgnUQCXc5G0bY2w/s72-c/table-1%20for%20AC%20circuits%20.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item><item><title>Stationary UPS Sizing Calculations – Part Four</title><link>http://www.electrical-knowhow.com/2024/05/Sizing-UPS-Circuit-Breaker-and-Backup-Time.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Sat, 4 May 2024 07:58:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-2618892422156979714</guid><description>As we stated in the previous article “Stationary
UPS Sizing Calculations
-Part One”&amp;nbsp;That Stationary UPS Sizing Calculations
include:

The UPS sizing calculations,Rectifier/Charger sizing calculations,Inverter &amp;amp; Static Switch sizing
calculations,The Battery Sizing Calculations.







We explained the UPS sizing calculations in
the above article and we explained in article “Stationary UPS</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSbbcy8f2GsjGxsYPsDdasEUR2yViJIWKeJ2VomLgPI15oBSDfgMfmygbkiaHo_ya1rVa-FWNksX-YcI07R_DlbLgb5fdlKCgYD8kbwxLbW2GH8pM-ALhfXxRp_3PJLPe8zZI-4OcI6vRTGsD_K1Qe_an4_xburJH1aJUiQ6z8BPu0j5WVr7qdAGJ9JyU/s72-c/FIG-1.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item><item><title>Stationary UPS Sizing Calculations – Part Three</title><link>http://www.electrical-knowhow.com/2024/02/IEEE-Methods-for-Battery-Sizing-Calculations.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Thu, 15 Feb 2024 12:18:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-4782705946630749242</guid><description>As we stated in the previous article “Stationary
UPS Sizing Calculations
-Part One”&amp;nbsp;That Stationary UPS Sizing Calculations
include:

The UPS sizing calculations,Rectifier/Charger sizing calculations,Inverter &amp;amp; Static Switch sizing
calculations,The Battery sizing calculations.







We explained the UPS sizing calculations in
the above article and we explained in article “Stationary UPS</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgCsOFt8YDkeaazMDdmBvEYQVpuXkml9KVtKq45kZFhYXmSIyP5VHwsK0UnVN5FzeqMwq15UWJv8nL0ib47DpxgM0kCAQJ5yns31AvI1-ohSDKqyOLGHYqjSGe2wuNZ-JHK3_vL0Fy6UvvDCojI231UFyvI8hfIX-jcoDmwetdiqHX0jng1XsPi4HFV5No/s72-c/Screenshot%202024-02-15%20121402.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item><item><title>Stationary UPS Sizing Calculations – Part Two</title><link>http://www.electrical-knowhow.com/2024/01/UPS-Battery-sizing-calculations.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Mon, 22 Jan 2024 11:04:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-3095784196443026742</guid><description>As we stated in the previous article “Stationary
UPS Sizing Calculations -Part One”,&amp;nbsp;That Stationary UPS Sizing Calculations
include:

The UPS sizing calculations,Rectifier sizing calculations,Inverter sizing calculations,The Battery sizing calculations.







We explained the UPS sizing calculations in
the above article and Today, we will explain the other calculations.

&amp;nbsp;

&amp;nbsp;



</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJUSjMW5-5wRmVc7rlqdBJ9_WdBK5RqJSL3Xr2A_r2SxSI82OTknbKDBb-oYoE-HjKx8PAurKJA7WHV8n9Aumyk1dKdAVfXzkdwA9saYeQu6naLRFAgEuPYaRXxUPoO8TXR6vbPe9DIV_W_AYXkHt3I_5T_t7twybbjDa0JmiJRcwifM0f2G7CyVafFUc/s72-w640-h432-c/life%20time.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">1</thr:total></item><item><title>Stationary UPS Sizing Calculations – Part One</title><link>http://www.electrical-knowhow.com/2023/12/UPS-KVA-sizing-calculations.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Tue, 19 Dec 2023 13:56:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-6004440657282015680</guid><description>As we stated in the previous article “Evaluation Criteria for Selecting an UPS-Part One”,&amp;nbsp;where we
explained the (8) steps for Evaluation Criteria for Selecting an UPS and left Step#3:&amp;nbsp; Determine the power requirements to be discussed
later in detail. Today, we will do this.

&amp;nbsp;

&amp;nbsp;




 
  
  &amp;nbsp;
  Stationary UPS Sizing Calculations
  &amp;nbsp;
  
 




&amp;nbsp;




 
  
  &amp;nbsp;</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgVr0BWCLsdzFujPg7C21I167HOxtLxcH0TNdQuOLbubh1TyaxpERabyLjy7BIJrB9Boeh3ZCGhkRWK3Bzefg2GftNnIjB1H4iIDUKbOd0uo3MfQsfg0eEZVDHaPowIk60E0DqT53wjOpwG4YE7hvP7drKEhiQ2N1e-PFtN0bxYo-iR2Gxa9ulAYpLHyBE/s72-w640-h259-c/STEP3.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item><item><title>Evaluation Criteria for Selecting an UPS-Part Two</title><link>http://www.electrical-knowhow.com/2023/12/Example-for-Selecting-UPS.html</link><author>noreply@blogger.com (Unknown)</author><pubDate>Sat, 16 Dec 2023 10:57:00 +0300</pubDate><guid isPermaLink="false">tag:blogger.com,1999:blog-6291466886522656194.post-4622828866581781685</guid><description>

In the
previous Article "Evaluation Criteria for Selecting an UPS-Part One”,&amp;nbsp;we explained The process for selecting an UPS
which consists of eight steps (see Fig.1). These steps are:

Step#1: Determining the need for an UPS, Step#2: Determining the purpose(s) of the UPS,
Step#3: Determining the power requirements,Step#4: Selecting the type of UPS, Step#5: Determining if the safety of the
</description><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" height="72" url="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhVOvPK5cYWFsi7Myfm1mZegO73_T2WnEritoFDgGImFCsQKbSMekEJNOm4KgZ_1Xck8Cpjp4e3NJnioNjZ-WW7q85TISkQfW1d9EqUp4c-SqWa8ZnLizmpu3pYGHmSSSZofmtr7eETjfaJuNWKrKvGnxlXrEV8iu_x7Axyzv6YGVNv90OvkjrVbTxTHME/s72-c/Fig.1%20The%20process%20for%20selecting%20an%20UPS.jpg" width="72"/><thr:total xmlns:thr="http://purl.org/syndication/thread/1.0">0</thr:total></item></channel></rss>