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    PVC conduit question

    Hi all, I'm not so familiar with pvc conduit having used it very little in the past. However, I have a small workshop/man-cave to wire, it is attached to a small domestic dwelling. I need to wire this part using 20mm conduit. I have a few questions: 1: Am I right in thinking I can wire...
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    Which bracket?

    Hi, can anyone suggest a bracket which will suit this roof better? This universal bracket sits 20mm above the tile below, which means slotting and somehow weatherproofing every tile. I guess I need 5mm clearance, but the gap here with this bracket is 20mm. This bracket sits 45mm high, so...
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    Solar Panels Advice on off grid inverter wanted

    I've been asked to fit a Growatt spf 5000 es inverter which will have batteries (not sure what yet) and tied to the 230v domestic mains supply. Although I'm qualified to fit pv systems, I've never actually fitted any battery systems so not sure how they work in relation to connecting to the...
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    Which rail is this?

    Hi all, I need to refit/extend an older installation and I'm not sure what brand of mounting rail this is so I can obtain some compatible fixings. Does anyone recognise this? Thanks :)
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    30mm channeling chisel?

    I've just had to return an Armeg 30mm channeling chisel because it snapped after 5 minutes use. The last one I had didn't fair well either, and at £40 + I'd expect them to last! Does anyone know of any other manufacturer of these, don't really want another Armeg because they are not the quality...
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    18th edition exam question..

    Booked in for my 18th edition exam, so I've been doing some mock exams online. Can anyone explain this one? There's me thinking an RCBO protects against over-current and earth fault current?
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    AC isolation switch?

    Instead of using the standard rotary isolator for the inverter, is it acceptable to use a standard 100A switch within the consumer unit? It's DP, can be locked off, and will obviously be clearly labeled :-) Anything wrong with this method?
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    lenghening pv cables?

    Due to a change of inverter location I need to lengthen some 4mm dc cables. These are run in plastic flexi conduit. No space for adding mc4 connectors and a junction box or dc switch would be difficult. Is it acceptable to crimp a butt joint and double heat-wrap over the joints? Each one will be...
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    PV roof tile fixing question.

    I have a system to fit to a cement fiber slate roof. The problem is, the roof tiles have been fitted on 19mm battens (instead of 25mm) for some reason. To make matters worse, they've used over large galvanised nails. Any attempt to rip the nails out with a slate ripper tends to split the batten...
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    'local' pv manufacture?

    Hi all, I have a client who wants me to fit a pv system, but prefers panels made within the EU if possible. As it's a long time since I've done an installation I'm out of touch with recent progress in the industry, battery systems etc. I've been looking at some panels but very rarely do they...
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    ESR RCD? Which manufacturer?

    Looking at a budget T Delay RCD. Does anyone know who makes ESR ? Are they any good?
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    PV and the end of FIT's?

    With the probable end to FIT's next April I was wondering how this will affect the industry. Will sales of 'Iboost' and similar rise due to people choosing not to give away their surplus electricity? And how will the new regime affect the micro-generation schemes? Without the need to apply for...
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    One string or two?

    I'm relocating a 16 panel system from a field onto a barn roof. Currently, there are 16 panels, wired as two strings into an isolator. From the isolator there is a two core 4mm SWA which goes underground (about 150m) to the inverter in the farmhouse where it's wired into one of the inverter's...
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    MK time delayed rcd's?

    I asked my wholesaler for one today only to be told they're discontinued. A quick google of MK 6400s seems to confirm this. Does anyone know why this is and if Mk are producing a new version for some reason?
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    SunnyBoy connectors?

    Hi all, I have an SB1700 but having trouble getting my MC4 connectors to fit. The inverter has 4 dc connectors to plug into but these seem ever so slightly bigger than my mc4 connectors. Are they just a tight fit or are they different size connectors?
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    New Consumer Unit Needed?

    I've been asked to do some work on a domestic installation. However, it seems all but the shower and garage supply are not RCD protected. Does anyone know if single module rcbo's are available for this Merlin Gerin board or is it gonna have to be changed?
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    Hand dryer recommendations?

    I need to fit some hand dryers at a pre-school. Does anyone have any recommendations for a good reasonably priced dryer to suit? Thanks~~
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    Off grid shed?

    I'm planning the electrics for my shed/summer house which is in a field miles away from mains electric. I want to run some 12v led filament lamps along with some 12v Gu10's. Total of around 50W (4A) Also some usb outlets for phone charging etc, and maybe a caravan style water pump for...
  19. C

    Contactor/overload wiring help pls...

    Hi all, never had to wire a domestic sewerage pump before so not my usual line of work. Was told I need a thermal overload for the pump (1.1kw) and this came with a contactor (not sure why it needs a contactor, but it appears that the overload unit need one to plug into. Can anyone please advise...
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    Which screwdrivers?

    I seem to get through so many 4mm slotted drivers. I currently use Irazola/Bahco. Is there anything tougher out there?

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