/diy/ - Do It Yourself

>>1050510

>Lighting bar clamps

>>1050516
Where can I buy them in bulk also thank you friend

>>1050519
Seeeeeexxxx

>>1050518
Also found on ebay so nvm. What works for a cheap hanger? Wood 2x4s?

>>1050516
I have no idea where you are but the ones I have worked with looked to have been locally made and were a little different to the one I posted.

Hope you get the idea for the drawing.

>>1050524
>Wood 2x4s?

Not real well at all.

>>1050528
more or less a metalish bar woulds work decently?

>>1050528
Oh hang on I thought you were asking if the clamps fit 2x4.

Steel pipe works good. Just make sure its the right size and strong enough to not drop on anyone.

They look like old lights so you are going to need loads of power, much more than normal domestic outlets. In my country dimmer racks normally run off 3 phase.

>>1050532
I see the dimmr packs say 120 I know thats residential but idk about the actual lights.What is 3phase power output 340Volts?

>>1050537
I don't know about your country but mine its 240 for each phase and 415 between each.

>Add up total wattage of lights

>Calculate if supply = demand per phase

>>1050516
Those (cheep clamps) are cheese - even for par cans (little weight) youd need additional safety chains, which is probably law if you using them in public anywhere civilised anyway.

Good heavy-duty clamps = Doughty, etc. - cost though. If theyre black = cheap shite, invariably. Poles, nearly every clamp is designed for 50mm round alu bars - before you go buying thosenew, check out ebay for actual stage truss systems instead, 2nd hand 3-pole (triangular) probably cost same/not much more as 50mm alu new. Try and stick to name manufacturer tho (Global Truss, w7e) otherwise, you screwed later for bits, expansion, etc. 'Steel' (non-alu) is too heavy ;) - kill some fuck underneath. All depends whether mobile or fixed iinstall use..

28 x 300w is 8400 W (35A @ 240V) - dunno where you using these (but, it would be unusal (ie unlikely) anyone has that spare on single phase - youd probably need a (simple) 3-phase distro of some sort as well. And if theyre 500W, or 1k lamps, that dont improve the usage opportunitiess any either - its why every fucker went LED, but, incandescent is always nicer. And warmer.

>>1050539
More accurately

>Supply is greater than or equal to demand.

>>1050539
Well I meaaan, I dont hook up power to houses much anymore, but its actually 120 per phase / Leg. Two legs per meter feed into the house. Just saying idk where you live.
>>1050541
Well shit most my usage is for residential so these seem useless.

>>1050541
>Those (cheep clamps) are cheese

I wouldn't be surprised if they are ebay shit or similar.

The ones I used were about 6mm thick unpainted steel.

Some of the heavier lights used ones like these.

>>1050547
Well where can I buy decent ones for not tons of money

>>1050546
price (with controller + dimmers) is prob OK, but for resedential, 48 Par 56/64, is fucking way overkill, thats (a) a theatre setup (b) you are never gonna find the juice to run them anywhere resedential (c) be fucking hot, like really hot ;)

Get some (modern) cheap china shit led cans, 4/8 pieces (they all more or less the same) + 2 mobile stands and a couple of good moving effects/scanners, done. Less juice, less hassle (no need for dimmers) less moving, etc. Its maybe 'cheap' but, its not much use for your pruposes, honestly.

>>1050547
I lke them better ;) those other ebay fuckers should be banned but, just complete shit.

>>1050546
I think burgerland doesn't do domestic three phase but rather centre tapped single phase.

If its for one off occasional use rent generators. These things cost $ but if you want it to happen....

We had a 250kva and a 150 kva because it would have cost millions to get enough mains capacity installed.

>>1050553
Nigga you know that kva means killavolts right? So you had 150k volts? y.

>>1050560
Have a read:
https://en.wikipedia.org/wiki/Volt-ampere

>>1050566
Its still Killavolt broham, That only explains the volt amphere

>>1050566
http://www.coresite.com/resources/thought-leadership/faq-what-is-kva
Also
>Wiki

>>1050569
>>1050560
Generators are rated in volt-amps which is NOT the same thing as a watt.

>>1050584
Who the fuck said anything about a watt? Wattage is measured power

>>1050569

Is this guy for real?

>>1050604
Idk man, are you retarded?
What do you do for a living, cause I work with power lines.
>Kilavolt amphere
>Kila
>1,000 volts.

>>1050560
>>1050569
>>1051003

Nigga you know that kva mean kilovolt-amps right?

With DC power va=watts So 250kva = 250kw or 250000 watts

However with AC we have to factor in the power factor which is due to the phase of AC power.

The power factor that we have settled on to do most estimates is 60% (this might have changed since I was in school due to general increase in efficiency requirements).

So 250kva*.6 = 150kva = 150,000 watts

Now you're going to say this is a huge, which it is. These generators are not what you bring camping so you can run your A/C. These are generators that are brought to large outdoor events like a concert or to run a whole building during a power outage.

I really hope you don't actually work with power lines for a living because this should have been taught to you before you became a lineman.

>>1051218
>So 250kva*.6 = 150kva = 150,000 watts

Should read:

So 250kva*.6 = 150kw = 150,000 watts

Also it is worth noting that while a 250kVA generator is large, 2000kVA+ or 2mVA are also common. Largest one I've ever seen in person is 3mVA. That is putting out power similar to a small hydro dam.