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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Hi, L+G ZMD120A53 is displaying FO40000. I have searched the net and contacted L+G who refused to assist. Been waiting 6 months for supplier to...
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15
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635
Hi, we are converting old farm buildings to commercial units, and as my father used to run a vacuum pump and compressor in his dairy I always...
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13
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442
wiring a 480 volt 3 phase 114 amp generator to run 2 machines. Both machine nameplate 480 v 3 phase 50 FLA. What size wire and over current...
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0
Views
197
Hi I'm installing two new sub-mains. I need to parallel some of the supply cables. It's the main incomer in 5 x 25mm, with 5 x outgoing 25mm...
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5
Views
375
I need to connect an infrared panel to the ceiling. The panel comes with a pre-wired 13amp plug, but it needs to connect to the supply left in the...
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14
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1K
A
Hi I recently installed a supply for my mates welder in his workshop. 2.5mm SWA from existing TP Schneider DB to 16A wall mounted socket...
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27
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15K
Hi, I am looking for some quiet contactors to control a pair of 3 phase 20KW fan heaters in an art gallery. Are there any favourite suppliers?
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24
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1K
Hi there - some of you might have seen my previous post about current-measuring CT clamps. This is another question about them! Once again I'd...
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4
Views
652
I have an an electric brake on a three phase motor with the attached wiring schematic which is part of a wine press. At first I thought this was...
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3
Views
400
Good morning, I have a 3 phase supply into my workshop Hager dist board. I need to measure my usage for business accounts. My Electrician...
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13
Views
818
I am not a graduated electrical engineer, but I have currently completed my second year of Electrical Engineering and I am going to go to third...
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6
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717
I am wiring an external soap dispenser into a large washing machine and there is not a terminal to connect my common wire coming from the...
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3
Views
276
I'm looking for the best and long lasting cable for my commericial building please suggest me the best brand cable and specification . Thanks...
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5
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465
  • Question
Hi All, Newbie to the forum. I am planning to add solar power to my house and would like some advice regarding options with adding and inverter...
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0
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299
I'm having a bit of a brain fog moment (changing medication is such good fun!) and am looking for confirmation that I'm either right or talking...
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3
Views
437
Hi there, I'm looking for some advice on installing a defibrillator cabinet in an ex BT phone box. I have taken ownership of the phone box and...
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21
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3K
Iv been asked to wire a separator (portable to go to different farms and separate water from slurry) to a 3phase 40 kva generator. The separator...
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4
Views
640
I have one 1kw single phase and one 5.5kw 3 phase inverter to drive 2 motors. As the installation is in proximity to 2 smart meter, I'm thinking...
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0
Views
430
Hello everyone i recently got a job on replacing a BMS panel in a plant room. the NEW panel i installed except the control side of the...
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8
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564
evening all ive got a single phase AC fan motor running normally however occasionally on start up it starts in reverse. i have 4 no fans, and this...
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4
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622
Guys I have 2 DOL starters which share the same supply for 2 toilet extract fans I have a selector switch wired up and and a set of auxilliary...
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3
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680
Morning All, I am currently involved in a project for 2 under pavement vaults both have been stripped out to allow for full tanking (wall and...
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5
Views
825
No necessarily electrical related but thought someone else might have come across this… We are doing an office refurb and a couple of the sub...
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12
Views
628
Looking for some guidance here. I'm currently shadowing a guy and we're testing a new extension on a school. 3 phase TNCS supply from the original...
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6
Views
679
Hi Everyone, I have recently purchased a spot welder- Celette Scorpion 2400R. Plugged it into my three phases and it blew fuses(3x20A) with the...
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15
Views
937
Hi, We have a battery storeage system in our house. Do you know who is offering the cheapest night rate electricity charge per kwh at the moment...
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5
Views
538
I am helping a local football club who are having some issues with Zs being too high on the submain. They have the supply Henley blocked into a...
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9
Views
1K
Hi there as detailed in the picture I have a lot of fridges and freezers to be installed within a commercial environment as of running the cabling...
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6
Views
586
Hi there sparkys! I work for a company who manufacture CT Clamps to measure current consumption. I'm a presales engineer, not an electrician...
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10
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946
I've got a large USA artist music tour starting soon across Europe so we're having to sort out lots of reducer transformers etc, no big deal. But...
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14
Views
837
  • Question
Im an apprentice spark and have been sent to look at some bonding work at a restaurant as apparently staff have occasionally been getting shocks...
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4
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547
  • Question
Hi, I'm designing a wireless switching system for a cattle water trough. I'm looking for a float switch which would send a wireless signal to a...
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6
Views
713
Hello, not sure if this is allowed but here goes, I was recently staying on a caravan park along with many others, (touring caravan not static)...
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6
Views
1K
I've been asked to install Schneider AFDD's into a single phase board. I'm to supply the board with RCBO's and AFDD's. I've purchased the new...
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3
Views
943
The machine is a Sunnen CK-21-E used for Honing. I cannot find any manuals but ill post the tag. I dont believe its multi-voltage which would make...
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5
Views
1K
Hi all, I've got a small catering business out of a converted horse trailer and purchased an inverter generator to power the trailer, mainly just...
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7
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3K
During a recent EICR the RCBO keeps tripping , i measure leakage of 2.6 ma when clamped around line and neutral, when i clamp the cpc i get over...
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4
Views
738
hello thanks in advance this is my third post. my question is if i can use an alternative to this manual starter? even maybe just an industrial 3...
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2
Views
754
Hi all, We've been asked to upgrade 450+ 6ft single fluorescent battens to LED. The client had requested for each fitting to be connected into...
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3
Views
848
This must be such a noob question but I cant seem to find any answer out there: Background: Installing a 10hp Air Compressor 230V 30A 3Ø. The...
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8
Views
682
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