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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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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?
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...
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...
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...
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...
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...
I'm looking for the best and long lasting cable for my commericial building please suggest me the best brand cable and specification .
Thanks...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
Hi there sparkys!
I work for a company who manufacture CT Clamps to measure current consumption. I'm a presales engineer, not an electrician...
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...
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...
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...
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)...
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...
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...
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...
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...
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...
Hi all.
Just a quick question, for you guys. I have received a phone call today with a request to carry out a commercial EICR on a chip shop...
I am aware that a BS 61008 can't be used for overload protection but is there a reason that it can't be used for fault current protection.
Edited - please read right to the end!
Grateful for any advice regarding CT metering which seems to be generating inaccurate/implausible...
Evening everybody.
It’s been a while since I’ve asked for the collective brains advice but this one has really got me stumped.
I’ve been asked...
Hi
A customer has a new farm shed going up supplied also from a new 100KVA transformer right outside. The supply spec states that PSCF could be...
I have been having a discussion on site recently :
In an industrial situation, in the main intake room which contains the metering equipment...
I have retired from Solar installs and now finally looking to do my retirement project - Daimler V8 2.5.
I needed some powder coating done but the...
Hi all,
I recently bought a CNC router and dust collector and need to connect it to my 3x380v+N power source.
I want the CNC router connected to...
I have been through a time served electrical apprenticeship, achieved LV 3 2330, AM2, NVQ, and all other stuff to do with, 6 years ago. I do not...
I've lost touch a bit with permanent install generators and combined AMF controls over the last 3-4 years - what Manufacturers are people using...
Just had a call from an M&E client of mine and good mate asking to pick my brains.... large 3ph biomass boiler with (I assume variable speed)...
Across the pond in the US we allow utility-owned transformers to be tapped up to six times but an identically set up customer-owned transformer to...
Hi there,
I got a call to a job, table saw (wood) tripping C/B straight away.
4kW motor on Star Delta Starter.
So I get to the job, after some...
Here’s something I’ve never thought about until now….
So, we use the adiabatic to return an S based on the usual parameters and for arguments...
well i have seen it all ,so the story begins a customer ring up asking me to install some cctv for her and husband is mostly bed bound ,so the...
Hi
I got called out to a faulty star delta starter on an old Stenner band saw Monday (was getting stuck in star and blow fuses) - So I ordered a...
Hi everyone
I have a job that requires a 63a 1ph supply to a small unit, the main distribution panel is a Crabtree Powerstar. I am struggling to...
I'm going to need to make some 'temporary' UPS systems next year - I'll have to find possibly some rack mount units that can live in an outdoor...
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