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Our company in the UK had its Periodic Inspection done over a year ago but now we’ve lost the EICR. We’ve contacted the company who did the...
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Went to a job this week where we replaced a slip ring motor. We went back as it was not running upto full speed which we found was due to the oil...
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653
  • Question
I have been tasked with seeing if a site is capable of accommodating a large new installation. I have done some working out but I'm not sure if...
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Hi, Main LVAC Board, Directly Fed from a Transformer. What do i put as an OCPD on my BS7671 Test sheet? Since I don't believe the Transformer has...
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Dear forum members, Would you give please a practical tips how to measure and what measurement equipment to use (with some examples if possible)...
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Where can I find Industrial Electric Diagrams to study and learn from please! Thank you!
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I am looking for the B1 case size they made between the 1971 (GEC D case type) and when Siemens took over the brand. I don't have access to the...
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While driving home from Runcorn today via mid Wales my mind started wandering. I started thinking about HV safety distances. Now I know that at...
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Hey all, looking for a bit of industrial electrical advice, I'm kind of stuck between a rock and a hard place at the moment, the company I work...
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Bit of a long shot but has anyone got a circuit diagram for a Megger Foster OTS 60PB oil breakdown tester. Ours has gone 'breasts skyward' and I'm...
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Hi All, We have a Merlin Gerin Compact NS100N Single Phase MCCB I've been asked to find its Max ZS Values and to be honest I cant find anything...
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448
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Hi Everyone, Fairly new to the forum I think I'm in the right thread. I'm hoping to get some advice. I originally served my apprenticeship as...
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Hi All, I have a question trying to understand earthing arrangments SO, We have a DNO Substation, 4 Core armoured Feeding the Distribution Board...
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Hello everyone, I'm a service engineer from Malaysia and come across a simple problem. I work with instrumentation and the problem I face with is...
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146
Cable calcs using cable calc app Working out cable size for a workshop. 100m long, 100a supply, mccb 100a zs- 0.23 ohms, in a duct on its own...
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Hi all, I have been asked to install individual three-phase supplies for a band saw and table saw. Having trouble figuring out the correct cable...
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Hi all :) I teach Electricity in France. With my english teacher, we want to create an activity for our student. The goal for students is to...
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Hello Folks Myself Arif Patel Preston Dubai, I Wanted To Know Which Type Of Wires Uses In AC's At Offices? If You Know Please Reply Thank You!
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Hi, I’m Not getting enough torque on startup to turn pump. Turns pump successfully maybe 1 in 6 times on startup and then fine at full speed...
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424
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Hi everyone I’ve done a bit of metal conduit before but been reading up online and seen people saying about marking the former to know where to...
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Good evening everyone Can any help or give me some advice please on measuring bending galv conduit. My question is bending long 3m lengths...
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Posted this to the DIY section since I'm not a business or employee in this matter but it feels more appropriate (and might actually get...
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318
I posted a month ago regarding a single phase motor + panel I have been given to try and sort following water damage to the panel. The assembly...
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419
Removed the associated phone-line. How do I permeably silence this message?
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Hi, I am a mechanical engineer tasked with some electrical engineering scope of work and not sure where to look for information on the...
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6
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I previously posted about having a single phase reversing motor which I thought had a centrifugal switch. After looking into it more, it actually...
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534
Hi guys, Been given a motor and associated control gear within a panel that has been water damaged. This motor has 3 windings U1/U2, V1/V2 and...
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451
Hi, I have a question regarding the cable size to a 415v 125A socket. For the design current is it normal to use the protective device rating of...
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I'll be starting a a testing, inspection and compliance outfit at that end of the month and this will be my first proper job in that industry...
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Organizing my fuse inventory at the plant I came across some Ware 56-50 Amp (FRS style/size). The world of fuses is complicated enough... I cannot...
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Hi guys I’ve got a motor starter I’ve come across and looking at the electrical drawings it’s originally had 35mm tails from a 100amp fused...
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Can someone please remind me what a) the general requirements are for E-Stops on machinery such as lifting hoist controls and b) what the...
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What could be the reason for all of the three Siemens contactors on a 37kW star delta starter to lose continuity on auxiliary contacts and main...
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Hi All I’m in a bit of a quandary at work and need a couple of things clearing up if poss. I’m the maintenance...
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Hi all. Just a quick one really. Some of my work has started to creep into the industrial sector and, as such, I'll need to do a bit of...
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Just a reminder to everyone, could you all please keep banging the drum for the http://www.fatallyflawed.org.uk/ site and campaign? The sooner...
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I have a question around equipment & electrical separation of circuit breaker grouping that I want to reference against the Regs book...
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It's not that often I stare stupidly at something for 5 minutes and can't work out where to start, but.... The horizontal and lower vertical...
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Hello all, I'm new and apologize in advance if this is not the correct forum to post this type of situation. Attached are two photos of CPU...
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I'm not an electrician, but I do electrical tasks for my employer. Hello underfunded maintenance department. I'm currently troubleshooting an...
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542
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