<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>CR4 - Section&#x3a; Electrical Engineering</title><link>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;section&#x2f;electrical-engineering</link><description><![CDATA[The Electrical Engineering section of CR4 includes forum and blog entries related to sensors and switches, power generation and distribution, test and measurement, alternative and renewable energy sources, etc.]]></description><copyright>Copyright 2026</copyright><pubDate>Tue, 02 Jun 2026 04:21:31 EST</pubDate><generator>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com</generator><item><title><![CDATA[Form 4A &#x2014; LV Panel &#x2014; Rotary Handle]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151544&#x2f;Form-4A-LV-Panel-Rotary-Handle&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[If it is Form 4A &#x28;Form of Separation for LV distribution boards&#x29;, does this automatically mean that rotary handles are provided on the DB door to operate the MCCB&#x3f;]]></description><pubDate>Tue, 02 Jun 2026 04&#x3a;21&#x3a;31 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151544&#x2f;Form-4A-LV-Panel-Rotary-Handle]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Emergency Light Fixture]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151543&#x2f;Emergency-Light-Fixture&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[For emergency light fixtures,&#xa;&#xa;1&#x29; Combining both the power cable and the charging cable in the same cable &#x28;Multi core&#x29; acceptable&#x3f; &#x28;refer magenta line in the picture&#x29;&#xa;&#xa;2&#x29; Taking power for charging from the separate circuit breaker acceptable&#x3f; any disadvantage in it&#x3f; &#x28;refer yellow line in the picture]]></description><pubDate>Mon, 01 Jun 2026 14&#x3a;04&#x3a;45 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151543&#x2f;Emergency-Light-Fixture]]></guid><dc:creator>Selk</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Arc Flash and IP Rating]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151514&#x2f;Arc-Flash-and-IP-Rating&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[What is the minimum IP rating required for an enclosure to direct the exhaust of extremely hot gases from an internal arcing event away from personnel&#x3f;&#xa;&#xa;&#x28;or&#x29;&#xa;&#xa;In the case of a non arc rated enclosure, which IP rating provides optimal protection against arc flash for personnel in the vicinity&#x3f;]]></description><pubDate>Mon, 11 May 2026 15&#x3a;41&#x3a;48 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151514&#x2f;Arc-Flash-and-IP-Rating]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Undervoltage Relay for Low Voltage Motors]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151509&#x2f;Undervoltage-Relay-for-Low-Voltage-Motors&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Do you provide dedicated undervoltage protection for low voltage motors below 100 kW&#x3f;&#xd; My understanding is that, in this power range, undervoltage is typically addressed by the overload relay, since a drop in voltage leads to an increase in current.&#xd; In such cases&#x3a;&#xd; Should undervoltage protection be]]></description><pubDate>Thu, 07 May 2026 10&#x3a;12&#x3a;35 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151509&#x2f;Undervoltage-Relay-for-Low-Voltage-Motors]]></guid><dc:creator>Selk</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Ammeter Location for Star-Delta Starter Circuit]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151507&#x2f;Ammeter-Location-for-Star-Delta-Starter-Circuit&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Is the red rectangled area correct location for the installation of Ammeter&#x3f;&#xa;&#xa;This is the Electrical Star-Delta starter circuit]]></description><pubDate>Mon, 04 May 2026 15&#x3a;16&#x3a;23 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151507&#x2f;Ammeter-Location-for-Star-Delta-Starter-Circuit]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Tie Breaker Rating]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151496&#x2f;Tie-Breaker-Rating&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Main-Tie-Main&#x3a;&#xa;&#xa;Transformer rating &#x28;2 Nos&#x29; - Normally rated to supply both Bus A and Bus B.&#xa;&#xa;Bus tie - Normally open, so normally the transformer is only 50&#x25; loaded.&#xa;&#xa;The bus tie breaker is normally open. Only in case of Failure of one transformer, the tie breaker will be closed, so the current flow]]></description><pubDate>Mon, 27 Apr 2026 08&#x3a;48&#x3a;34 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151496&#x2f;Tie-Breaker-Rating]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Load Sharing Communication Method]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151490&#x2f;Load-Sharing-Communication-Method&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[We are using DEIF IE350 for load sharing&#x2f;paralleling of the generators.&#xa;&#xa;What is the best communication method for load sharing, there is a RJ 45 port and there is a CAN bus.]]></description><pubDate>Tue, 21 Apr 2026 13&#x3a;03&#x3a;11 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151490&#x2f;Load-Sharing-Communication-Method]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Synch Selector Switch - Auto Transfer Scheme]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151480&#x2f;Synch-Selector-Switch-Auto-Transfer-Scheme&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[For the LV switchgear ATS &#x28;Auto Transfer Scheme&#x29;, have you used a synch selector switch&#x3f;&#xa;&#xa;I am familiar with using a trip selector switch &#x28;TSS&#x29;, where the TSS trips the selected breaker after momentary parallel operation.&#xa;&#xa;How does the synch selector switch work in this scheme&#x3f;&#xa;&#xa;Are both the synch s]]></description><pubDate>Tue, 14 Apr 2026 08&#x3a;46&#x3a;15 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151480&#x2f;Synch-Selector-Switch-Auto-Transfer-Scheme]]></guid><dc:creator>Selk</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Test Terminal Block&#x2f;Test Switches in MV Switchgear]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151472&#x2f;Test-Terminal-Block-Test-Switches-in-MV-Switchgear&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[The test terminal blocks or the test switches to be fitted inside the LV cubicle of MV switchgear or on the door of the MV switchgear. Which is better and why&#x3f;]]></description><pubDate>Tue, 07 Apr 2026 09&#x3a;19&#x3a;31 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151472&#x2f;Test-Terminal-Block-Test-Switches-in-MV-Switchgear]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[Measuring Instrument in Bus Tie - MV&#x2f;LV Switchgear]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151471&#x2f;Measuring-Instrument-in-Bus-Tie-MV-LV-Switchgear&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[What is the measuring instrument typically provided in the Bus tie or bus coupler&#x3f; Is it a Bidirectional ammeter&#x3f; or a power meter&#x3f; How do i know which direction the power flow if the bus tie is closed&#x3f;]]></description><pubDate>Tue, 07 Apr 2026 09&#x3a;17&#x3a;43 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151471&#x2f;Measuring-Instrument-in-Bus-Tie-MV-LV-Switchgear]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item></channel></rss>