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Questions and electrical advice in the Commercial Electrical Advice - Discussions on Three Phase Supplies, three phase machinery and motors, DOL starters, phase sequence, running steel conduit, trunking and other questions on industrial and commercial electrical installations and maintenance. Commercial Electrical Talk. Also notice our Electrical Advice Forum and our Industrial Electrical Forum.

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single phase to 3 phase
He will need to rub harder for a puffs to to...
  • bernieseibert
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buzzlightyear
buzzlightyear
newfutile
Strange Residual Current Device tripping on lamp post
Fairly common with cheap LED lamp drivers, to...
  • newfutile
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5
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Biff61
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I
3ph help and then some!
That won't solve the problem, you have a TNCS...
  • Initforthemoney
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davesparks
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GeeWizz12
When to isolate incoming supply to DB
The company are going to have give in on this...
  • GeeWizz12
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snowhead
snowhead
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Can anyone supply an abb
A quick Google search turned up two suppliers...
  • Andyipswich
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1
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nicebutdim
N
F
Zs values recorded results.
The reason is that ADS is all designed around...
  • fatboyslim
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11
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Julie.
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F
Earthing and Bonding sizing.
Copper has a conductivity 8 times that of...
  • fatboyslim
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5
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davesparks
D
S
380v immersion heater in UK
I need a 3 phase immersion heater with a...
  • Stan80
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0
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899
Stan80
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S
IR testing steel conduit on 1st fix?
I think there are two things being muddled: 1...
  • sheppy619
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1
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timhoward
timhoward
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Wanting to get into site work UK
Not relevant what i believe, it's in black and...
  • Venomx1990
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9
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rewireIT
R
happysteve
3 phase cooker - idiot check
Thanks :) Yes, of course, a 3P MCB... just...
  • happysteve
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2
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happysteve
happysteve
Kennedy23
How bespoke is this? Is there an alternative?
You are correct, the uppercase letter (D, Y...
  • Kennedy23
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2
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19
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Julie.
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Mark42
Best way to parallel 25mm/35mm singles
Good point. Here's a better picture for scale. :)
  • Mark42
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11
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Mark42
Mark42
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Bonding RSJ question.
Not neccessarily. Bonding it may mean you are...
  • fatboyslim
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2
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17
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narkedatninety
narkedatninety
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Replacement DB to Submain RCD advice
Ok so In this case I would not worry about...
  • fatboyslim
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4
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Flanders
Flanders
F
BS number/ Zs MCCB help?
OK good to hear! It seems the 125 frame has...
  • fatboyslim
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3
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3K
pc1966
P
R
What's the point of DIN rail terminal blocks?
This is how we learn. It’s amazing how long...
  • rewireIT
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6
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MJPD29
MJPD29
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what its minimum height of a consumer unit..
The main thing is continued access to the...
  • lumnjani
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9
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littlespark
littlespark
T
Floating Earth Generator advice needed
Thanks for this info! I'm going through...
  • TuscanToasties
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8
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8K
tutututu
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dcg4403
480V 3PH Neutral Wire Sizing
Apart from any regs that apply in your...
  • dcg4403
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4
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Simon47
S
A
Circuit Diagram Help
It all depends whether it is a linear power...
  • Amesh1263
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1
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DPG
DPG
M
E-stops for Car Workshop Ramps
Plus one for walking away and not getting...
  • MdubElec
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7
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1K
R-fur
R
I
Danfoss FC51 lack of power options in configuration
Looks like you need to buy a smaller inverter
  • icaro600
  • 2
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2
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962
James
James
H
EV Charging - Using DC chargers to charge a fleet
Load curtailment would likely be high on the...
  • Helix737
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1
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MFS Electrical
MFS Electrical
K
Earthing gas pipe warehouse
I would imagine all of that steel structure is...
  • Kinxsize
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6
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diditrain
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S
L+G 3ph Meter Error Codes
Thank you both for all your help. I have...
  • Stoner27
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2
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15
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Stoner27
S
W
Dual phase upgrade to 3 phase
A large site I work on will regularly make use...
  • WiltsFarmer
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13
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nicebutdim
N
J
What size wire and over current device needed for a 480v 3 phase generator 114 amp.
wiring a 480 volt 3 phase 114 amp generator...
  • johnson1977
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0
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johnson1977
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R
Heat resistant cable connector
Why quick release?
  • Rich4423
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14
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Clark the spark
C
UKMeterman
Quiet contactors needed for some 20KW fan heaters
True, but no one in France listens to French...
  • UKMeterman
  • 24
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2
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24
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Mike Johnson
Mike Johnson
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