I recently wired a heating system with a UFH8 manifold and an unvented cylinder.... easy.
Well it threw up a few problems.
Initially I had the time clock live feeding the UFH16, ugh zone valve connected to the valve connection and fired the boiler with the volt free on the pcb LS and LR. Circ...
Hi all,
Looking for some advice on first fix for sky and freesat TV,
I've quoted a WF100 shotgun and a single to both bedrooms and lounge, plan was to run all shotguns to external point for Sky to terminate into LNB and fit amp and digital aerial for the 3 freesat points. Terminated in each...
Hi All,
So i was asked to look at at large 3 phase to 120V transformer around 85kVA - it was tripping the MCB instantly (it never used to)
I insulation resistance tested the primary windings to earth - >2000ohms
I continuity tested the windings and got 0.46 ohms per winding, they were all...
Hi all,
Pricing for a supply to a 25x 10M steel frame shed around 100M from a bungalow, one section is going to be partitioned to create a stable area.
Is there any requirement for a 300ma S type RCD?, I wouldn’t really class it as agriculture. Only 2 double sockets well away from the stable...
Heres one for you automation gurus.
I'm looking to control the speed of a rotary feeder or conveyor that feeds a hammer mill on a farm. In order to achieve maximum efficiency the feeder needs to be regulated via the load of the hammer mill. The 55Kw motor on the hammer will be started using a...
Just wondering what people thoughts are on obtaining a supply to a part of a local mill where I am now a maintenance engineer. The existing installation is terrible with many switch fuses that have been added over the years, the oldest part is from 1946.
The total supply capacity in question is...
Hello,
How are closed loop sensors like the below and monitored integrated into a control system, isolation switches/switch amplifiers? These are typically used on explosion panels where when they blow off it snaps the cable or ceramic plate causing an open circuit.
(I’m Prepared for the...
Looking at using a fairford synergy soft start unit as below to start a 45kw motor, just wondering what it means by connected in line, I’m presuming they mean star but can see how the motor would run correctly being 400/690v rated...
Hi,
I’ve been asked to look at a ADE optima compact plus as the zone 1 light is activating and it beeps everytime the PIR as activated I.e when someone walks Infront of it even when the system isn’t armed? You can press reset and the light goes off but as soon as it activates again it comes...
Query when filling out EIC for an additional circuit,
When filling out an EIC for additional circuit, Is the tick sheet applicable to that circuit only or is is talking about the installation as a whole? For example where it states Cables correctly supported throughout their run obviously this...
Hi all,
Got a bit of a problem with a new generator when starting a 60hp motor.
It's a 250kva generator with a 125A mounted plug, the plug is protected by a C125 A Merlin gerin c120h MCB with combined 300mA RCD, the motor starts fine but when it changes over to delta it trips the 125A mcb (I...
Quick hypothetical question,
Combi boiler in garage with frost stat and pipe stat on return pipe, two zone valves for upstairs and downstairs, does the frost stat have to open one of the valves or just fire the boiler? Do they have a bypass valve?
Whats the opinion in serrated washers with galv steel conduit? I was always taught at college to have one in between coupler and accessory and coupler and trunking, wether being used as the cpc or a separate cpc.
I was at a job today where they are installing a trunking/conduit system but are...
So workshop with perimeter 75x 75 galv trunking, with overhead lighting trunking suspended from rod with hangers, lighting trunking is quite a bit higher than the perimeter trunking, how do you link the two?
Would you use an internal bend and flange it down onto the trunking at either end? Or...
Copied this from trainee section to see if I can get an answer, it is talked about a lot on the forum but reading through the old posts I can't determine whether I'm right or wrong.
What I'm looking to understand is sub main earthing conductors. Is what I am saying right?
So a sub main to an...
ERBAUER ERT576SDS 2.8KG 36V 2.0AH LI-ION SDS PLUS CORDLESS DRILL
Excellent drill with great reviews on screwfix, never been used or out of box, with all original packaging.
Fast charger, 2 x 36v 2.0Ah batteries, depth stop
looking for £235
Postage £10
In 3rd year you are not at college for a basically a year until the fica preparation night classes, I have not worked out dates to confirm it is feasible but I am considering doing the HNC electrical engineering in this 3rd year, I sure the night classes won't conflict with the examination dates...
Recently our family friends had a supply installed in there winter yard (travellers/showmen), being a trainee and having just covered special locations section 708 at college,I was interested to see how it Was done.
Supply is as follows.
3 phase TNS supply
25mm tails to 63A 4 pole switch fuse...
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