Home DIY

Cheers. If it's not going to make it worse I'll stick some on.

👌

I'm looking to buy a multi tool - given what I'll use it for battery makes sense vs cable. I've got two of these DeWalt batteries, so looking for a DeWalt one.

Might be a silly question, but is everything listed as "18v XR" going to be comparable with my batteries?

Ie would this work:

https://www.ebay.co.uk/itm/DEWALT-DCS355N-18V-XR-Brushless-Oscillating-Multi-Tool-Body-Only-/284483571210?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0
(batt pic is mine, multitool is ebay)

Cheers.

...

Ps anyone know why DeWalt stuff from the US seems so price competitive? And will I get stung with tax?

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US imports are fully compatible, though no UK warranty.

Your style of battery should fit that fine.

https://www.ebay.co.uk/itm/Dewalt-DCS355N-18v-XR-Brushless-oscillating-multi-tool-naked-body-only-/251990358151?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l6249&mkrid=710-127635-2958-0

£80 here with voucher, some accessories and 3y warranty.

Awesome. Thanks.

I'm just pondering getting one (I already have a bosch wired one but have DeWalt batteries with my drill). Get it for £80 new here
https://www.hotukdeals.com/deals/dewalt-dcs355n-18v-xr-brushless-oscillating-multi-tool-naked-body-3804505

Some good deals on eBay stores with the 20% off at the moment.

Just picked up a laser level for some kitchen unit and built in storage and shelf purposes.

Yeah. I grabbed one of the ebay ones with the code that Acliff kindly posted. £80 seems like a good price.

4 core gets used for transformers that get moved around - 3 phases and the neutral gets sheathed in green/yellow and used as an extra earth because if the tranny gets bashed or the cable pulled and the armouring comes loose from the gland you lose earth, which is no bueno (and the tranny doesn’t need a neutral).

Not sure about not needing a neutral. Balanced loads such as motors don't need neutrals as there is no return current. Site transformers (presumably 110V) aren't going to be balanced across the three phases as each phase has a different load.

It's all about Phasor Diagrams.

Ps anyone know why DeWalt stuff from the US seems so price competitive? And will I get stung with tax

They have State Taxes so basically non VAT from the UK point of view.

You will probably get an import tax and customs if you order from the US

Also Grey Import, as mentioned, so warranty is an issue.

A 3 phase transformer doesn’t have a neutral full stop. And as it’s centre tap, each circuit is a pair of phases (rather than a line and neutral pair), each phase being 63.5V line to earth, which then gives 110v phase-phase. The 8 or so circuits per transformer are split evenly between the phases.

There might be losses, but they’re almost always powered by generators and the loads are relatively small compared to permanent installations. I don’t think it’d be cost effective or realistic to try and do PF correction when the loads are changing so often, and when the installation isn’t even permanent.

But I do love a phasor diagram (not that I’ve ever used one in anger).

Best ever Uk price I think.
Remember to register it on Dewalt’s website, the 3y warranty isn’t automatic.

Yes, the 110V side of the transformer does but other side of the supply is still at 230V per phase and has a neutral .

If you are using diesel generators then the motor is balanced and you have little choice to use earth as neutral but I've seen generators literally jump when their load side isn't balanced.

This was at outdoor gigs when all the PAR cans were turned on suddenly but it is an issue.

Power Factor correction is more due to capacitor loads than pure reactive loading.

Does anyone here have any tips on soundproofing a suspended timber floor? There's a useful guide here, but it would be good to hear from anyone who's done this, or had it done.

It's a bitch and mass is your friend. Once you've done it you will hear sound travelling through the walls and staircases etc.

I've done it for building regs with double plasterboard underneath and rubber mats with foam cores above. You can also get an insulation with rubber matting woven in it which is eye-wateringly expensive.

I've soundproofed underneath. Pm me if you like

What's the code you used? Tried with FALL20 and didn't seem to accept it

I believe it expired at 12am 12th October.

Ha ok thanks! Guess I'll just wait for another one then

To the sparks on here - i managed to damage the bathroom fan three-core and earth cable when redoing our bathroom. So when i came to wire in the fan it the moment you turn on the light it shorts. Theres continuity between the grey (used as a neutral and the earth) so assumed i pinched it.

The fan works with no issue just on the humidistat (so without a switched line triggered from the light) but ideally we'd have both.

Is there an issue using the earth as the neutral if the fan doesn't need to be earthed (class II) - i'm sure it's not allowed, but pragmatically whats the risk? I'm not keen on ripping down the ceiling and insulation to recable...

How do I cut resin terrazzo wall tiles (11mm thick) for sockets and to butt them up against a wall?

My advice would be that I wouldn’t want to be gambling on the cable being in any sort of state for continued use.

With a small angle grinder fitted with a diamond-tipped tile cutting disc. Go slowly and carefully to avoid chipping it.

Remember to register it on Dewalt’s website, the 3y warranty isn’t automatic.

This is a good point, and something that I omitted to do with my first drill... altho 6yrs on it's still going strong. Still I made sure to do it with my impact.