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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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Absolutely losing my brain here guys What I would like to be able to do is power our 3 phase motor on a single phase supply. Thought I had it...
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3
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133
Hi Guys, We have a CNC router which uses single phase for the spindle, stepper motors and control box. This is all wired in and working...
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7
Views
182
I'm installing mag-locks and fire door hold-open magnets at the moment and I'm wondering if any of the cable should be fire performance cable...
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1
Views
171
Hi all, Has anyone here had any experiance of installing a Porsche 11kw 3ph EV wall charge unit ? We've not done many EV installs to date but...
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0
Views
110
Hi there, Just a quick question. Does a main protective bonding conductor require UV protection when run outside? I am under the impression that...
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3
Views
245
  • Question
I have a single phase system that uses 320 amps and 240 volts and I rewire the circuits for 3 phase what size generator would I need and how many...
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5
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2K
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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5
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1K
Hi guys, So, a friend of mine has a three phase 100a supply and wants to install 2 x three phase 20a fork lift chargers and a three phase car...
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24
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2K
  • Question
I always turn off main switch before removing cover or doing any work in a DB, but when should incoming supply be isolated ? When placing a...
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8
Views
648
Hi everyone I’m looking for an abb inverter It’s for a bandsaw Model number is ACS150-03E-08A8 I need it yesterday if anyone has one around I...
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1
Views
260
Evening everyone, I was taught when carrying out Zs testing to test both L-PE and L-N and record the highest result of the two tests for my Zs...
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11
Views
972
I have an Adexa dishwaser (7kg EMP.500 under counter style) that fills, heats and empties ok but has stopped working on the wash cycle. I replaced...
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1
Views
260
Morning All, Think I'm having a brain fart but I have a 70mm2 4 core SWA with a separate 35mm2 CPC. Earthing is TNS with main bonding...
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5
Views
765
I need a 3 phase immersion heater with a DN32/42 mm thread for a commercial pasteuriser. The only ones that I've found so far are not inexpensive...
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0
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226
Hi everyone, I'm nearly on my AM2 test and really enjoy the industrial side of things so I thought I'd learn by asking. I recently came across...
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1
Views
387
Hi all, just looking for some advice about getting into site installation work. Currently 32 yo, 1.5 years qualified gold card in electrical...
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9
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569
I'd appreciate a quick sanity check, thanks in advance: New circuit for a 3 phase cooker, in a community centre (run by a charity). Total load...
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2
Views
426
  • Question
Hi everyone. I'm looking for some advice on how bespoke this transformer is? Output KVA: 2380 Connection: Ddoy11 Duty: 30sec/200min Sec volts...
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19
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973
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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11
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1K
Hi all, I would like some advice on a scenario currently at my workplace. I am replacing a Sub main DB and replacing the wiring to sockets/lights...
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17
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2K
Morning guys, I would like some advice, currently at my workplace, I am replacing a DB and existing wiring in a warehouse. One of the ways feeds...
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4
Views
620
Hi, Can anyone tell me a BS number for a merlin gerin compact C161N? Also does anyone have max Zs available for the same C161N 63a MCCB? Cheers.
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3
Views
728
I keep seeing these on pics of installations, mostly industrial, and just wonder what they're for? Are they fused? Why put one in when we can go...
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6
Views
731
Hi all. Customer asking me to fix 3 phase consumer unit on a new shop . Its brand new installation . He want to use every part of shops and he...
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9
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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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8
Views
5K
Greetings, I'm a EE and have installed many electrical systems but am now dealing with my first large 3PH install on our property. I'm not...
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4
Views
610
Hi all, I've been getting into electrical work these last few months, and have gone from doing rudimentary battery-switch-bulb diagrams to...
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1
Views
533
Hi guys, A car showroom / workshop brand we do work for has asked us to modify a few things in the workshop. One of them being to implement...
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7
Views
606
Hi all, got a community center job and the want surge protection, 3ohase in phase for community center and phase for the flat upstairs, question...
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0
Views
347
Hi all. I have a Danfoss FC51 vfd. When I go to the menu 1-20, only appears the options from 8 to 11, which corresponds to a 1.1kW to 3kW. I have...
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2
Views
387
  • Question
Assuming a large company needed a large EV charging infrastructure for its fleet to be electrified. Would it be best to just go straight for 150kW...
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1
Views
643
Hi guys I am working in a warehouse where there is an inactive gas pipe and disconnected gas meter. The DB which has been upgraded now is on the...
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6
Views
1K
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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3K
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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1K
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
687
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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2K
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
Views
16K
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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2K
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
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1K
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
682
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