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The big difference in the electric terminology and installation regulations and practice in each country!
I’m from the US and I’m just trying to learn how UK does things and the terminology of what I call something verses what y’all call materials. I...
Megawatt
Aug 3, 2019
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99
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Jun 6, 2020
pc1966
P
A
A MCB 1200+ amps tripped .. help is needed urgent
Hi I'm supervising maintaining a building powered by a 1250 Amps and i had a total blackout twice within a week. Checking the MCB and it's...
apk2000
Sep 6, 2023
Replies
9
Views
612
Sep 24, 2023
apk2000
A
Need the right Time Delay Relay
Having to wire around a messed up output for a month or so. Some sort of program corruption is keeping the central lubrication system from...
JgeorgeBehringer
Sep 19, 2023
Replies
2
Views
218
Sep 23, 2023
timbobelfast
M
Earth leakage problem with inverter
Hello all, This is my first post so hope I'm in the right place for my question! I sell single-phase frequency invertors that drive variable-speed...
Markus D
Mar 8, 2016
earth
earth leakage
inverter
leakage
problem
Replies
5
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6K
Sep 15, 2023
JacoBekker
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N
BS 60898 or BS 60947-2
So how many are aware of the difference between these two Standards? I had these highlighted to me a few years ago and it was news to me. The...
Nigel
Sep 3, 2018
Replies
7
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8K
Sep 8, 2023
jacksonpaul
J
A
How to do a proper insulation test on an electric motor
I want to check the insulation of the 3-phase 400VAC asynchronous squirrel cage motor. Motor's stator windings are connected in delta. I've read...
antisa555
Aug 6, 2023
insulation
motor
test
Replies
1
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651
Aug 27, 2023
briwire
B
Max Zs Bill Talisman MCCB
Hi everyone, Happy Friday! Could someone please point me in the right direction, I’m after the Max Zs for a Bill Talisman TLF633 63A MCCB, I’ve...
TraineeMaintenanceSpark
Aug 4, 2023
max
mccb
permitted
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0
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373
Aug 4, 2023
TraineeMaintenanceSpark
R
Question
Electrical Testing Agencies in the UK?
Hi I am a sparkie based in London. I am trying to shift from installation and maintenance to Testing. I did not use my 2391 for a number of...
RonePlusRtwo
Jul 27, 2023
agencies
electrical
testing
Replies
0
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228
Jul 27, 2023
RonePlusRtwo
R
D
3 Phase requirements
Hi all i have asked a electrician about the mic level i would need to power the following machines a 45kva cnc mill, a 32kva cnc mill and a 60 kva...
daff963
Jul 7, 2023
3 phase
phase
requirements
Replies
1
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485
Jul 7, 2023
plugsandsparks
P
U
Our Schneider Micom P111 tripped
Dear All, Need advice on some strange tripping occurred in our industry, our Protection Relay Micom P111, settings are below, our relay tripped...
umairde1
Jun 15, 2023
Replies
1
Views
485
Jun 18, 2023
Megawatt
J
Compex Ex 01 - 04 course help (notes & advice)
Hi all, I am due to start the compex ex 01 - 04 at the end of June. From hearing back about a number of people who have failed the course it...
Jobocop
May 21, 2019
2
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compex
course
notes
Replies
12
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15K
May 28, 2023
Joao33
Mitsubishi Q Series PLC
Hi guys, long time no show I know. Anyway, started a new job few years ago, there is a pre-historic gear cutter with a Q series Mitsubishi PLC in...
stef
May 27, 2023
plc
series
Replies
5
Views
358
May 27, 2023
Aaron b
B
Question
Implications of replacing a 40A with a 125A rotary isolator.
An isolator had heat damage and was replaced, not by me, but the new isolator is 125A instead of 40A. They found one and threw it on. I locked it...
Billybob
May 24, 2023
isolator
replacing
rotary
Replies
3
Views
453
May 25, 2023
Vortigern
R
Initial verification and testing
Hi All I’m in charge of the maintenance (machinery and facilities) in a plastics manufacturing business. I have a ‘team’ of little old me and an...
RMS1981
May 7, 2023
initial
testing
verification
Replies
3
Views
723
May 22, 2023
Aaron b
T
UKPN interview questions/advice
Good evening. I am not sure if this is the correct place to post so please advise if there is a more appropriate board! I have recently applied...
Toblerone
Apr 19, 2023
interview
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Replies
0
Views
511
Apr 19, 2023
Toblerone
T
Lost EICR Periodic Inspection
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...
punkin
Mar 22, 2023
2
3
eicr
inspection
periodic
Replies
20
Views
2K
Mar 30, 2023
loz2754
A
How do oil immersed starters work
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...
AlexGoode
Feb 14, 2023
oil
slip
slipring
Replies
4
Views
962
Feb 25, 2023
AlexGoode
A
E
Question
How to calculate site load and availability for expansion?
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...
ethanmiah
Feb 17, 2023
calculate
expansion
load
Replies
7
Views
717
Feb 20, 2023
ethanmiah
E
Q
My OCPD (BS7671 Test Sheet)
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...
QuestionableSpark
Feb 14, 2023
sheet
test
test sheet
Replies
3
Views
881
Feb 16, 2023
davesparks
T
How to measure rail-to-earth resistance and rail-to-earth potentials
Dear forum members, Would you give please a practical tips how to measure and what measurement equipment to use (with some examples if possible)...
tatigo
Feb 16, 2023
Replies
1
Views
422
Feb 16, 2023
DPG
Where can I find Industrial Electric Diagrams to study and learn from please! Thank you!
Where can I find Industrial Electric Diagrams to study and learn from please! Thank you!
Florin_85
Feb 15, 2023
diagrams
electric
industrial
Replies
0
Views
275
Feb 15, 2023
Florin_85
R
Rayrolle - Protection Relay Case Sizes Question
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...
RetroFitDesignEngineer
Feb 13, 2023
Replies
4
Views
492
Feb 13, 2023
Julie.
J
HV/EHV Safety distances
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...
Moley
Feb 1, 2023
2
distances
safety
Replies
14
Views
1K
Feb 12, 2023
Lister1987
S
High Voltage advice (11KV)
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...
SparkMuffin
May 12, 2022
2
3
advice
high voltage
voltage
Replies
28
Views
3K
Feb 12, 2023
Tigger
T
Anyone got a circuit diagram for a Megger OTS 60PB oil dielectric breakdown tester?
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...
Moley
Feb 7, 2023
circuit
diagram
megger
Replies
0
Views
405
Feb 7, 2023
Moley
Q
Merlin Gerin MCCB Zs Values
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...
QuestionableSpark
Jan 31, 2023
mccb
merlin
values
Replies
6
Views
2K
Jan 31, 2023
pc1966
P
P
Question
skills refreshing advice
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...
paulmc88
Jan 28, 2023
Replies
0
Views
420
Jan 28, 2023
paulmc88
P
Q
Substation Earthing Arrangment
Hi All, I have a question trying to understand earthing arrangments SO, We have a DNO Substation, 4 Core armoured Feeding the Distribution Board...
QuestionableSpark
Jan 26, 2023
2
earthing
substation
Replies
12
Views
1K
Jan 27, 2023
QuestionableSpark
Q
R
False reading on analog instrument
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...
Rikka23
Jan 27, 2023
false
instrument
reading
Replies
0
Views
289
Jan 27, 2023
Rikka23
R
Cable calcs zs and ze values
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...
Simon-0116
Jan 13, 2023
cable
calcs
values
Replies
2
Views
765
Jan 16, 2023
Simon-0116
M
3 phase supplies for table & band saw
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...
Marine electrical fitter
Jan 13, 2023
2
3 phase
phase
supplies
Replies
15
Views
2K
Jan 14, 2023
davesparks
I’m looking for the exact terms for these devices
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...
myeleec
Dec 5, 2022
2
devices
looking
terms
Replies
16
Views
1K
Dec 28, 2022
littlespark
Arif Patel Preston Dubai | Which Type Of Wires Uses In AC's At Office?
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!
arifpatelprestondubai
Dec 15, 2022
hashwani
murtaza
wires
Replies
5
Views
725
Dec 15, 2022
Spoon
C
Learning electrical motors
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...
crumpsalian
Dec 13, 2022
electrical
learning
motors
Replies
9
Views
766
Dec 13, 2022
James
H
Question
How to mark former for conduit
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...
harry phillips
Dec 11, 2022
conduit
Replies
2
Views
780
Dec 11, 2022
Lister1987
A
Galv conduit help please
Good evening everyone Can any help or give me some advice please on measuring bending galv conduit. My question is bending long 3m lengths...
Alan Marriott
Dec 1, 2022
conduit
help
help please
Replies
7
Views
1K
Dec 2, 2022
Eric12
E
A
Wiring Multiple VFDs off Dryer Plug for Multiple 3-phase Motors
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...
allamateur
Dec 1, 2022
3-phase
mill
vfds
Replies
0
Views
527
Dec 1, 2022
allamateur
A
F
Motor wiring help - single phase reversing
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...
Factoryspark
Nov 28, 2022
capacitors
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Replies
0
Views
820
Nov 28, 2022
Factoryspark
F
Visonic Powermax (Check system for troubles)
Removed the associated phone-line. How do I permeably silence this message?
CCinPA`cr
Oct 31, 2022
system
Replies
0
Views
566
Oct 31, 2022
CCinPA`cr
K
Direct Buried Cables 3 Phase
Hi, I am a mechanical engineer tasked with some electrical engineering scope of work and not sure where to look for information on the...
KB1974
Oct 28, 2022
3 phase
buried
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Replies
6
Views
760
Oct 28, 2022
Electro-tech
E
F
Motor starting relay alternative
I previously posted about having a single phase reversing motor which I thought had a centrifugal switch. After looking into it more, it actually...
Factoryspark
Oct 14, 2022
alternative
relay
starting
Replies
1
Views
802
Oct 16, 2022
Lucien Nunes
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Can someone explain how these storage heaters were wired via the contactor?
Been round to a house to quote to replace some storage heaters for new panel heaters and came across a strange (to me at least) way of wiring the...
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I want a 16 amp socket in the garage with 3 double sockets
I have a 4mm2 armored cable going from the CU in the house, under the drive and into the garage. The breaker for this is a 16 amp type B. I want...
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connecting CO alarms to smoke alarms
any BS 5839 experts know whether CO alarms should be connected to the smoke/heat alarm system ? after completing an efixx CPD it seems they should...
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