FORUMS: list search recent posts

Using 120v 60Hz light kit in 240v 50Hz country

COW Forums : Lighting Design

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
Michael Folorunsho
Using 120v 60Hz light kit in 240v 50Hz country
on Jan 29, 2010 at 4:39:21 pm

Hi guys,

I'm interested in purchasing this light kit:

http://www.tubetape.net/servlet/the-94/MXLIGHT-TWIN-LAMP-THREE/Detail

These lights require a power input of 120v 60Hz. The issue is that i'll be using them in the UK which is a 240v 50hz country. Would I just need a US to UK power adapter for things to work correctly or is it a lot more complicated than that? And should I be worrying about the possible flicker on my PAL camera when using 60hz based lights?

Thanks in advance, Mike


Michael Folorunsho
Clicktone Media / Mike Does Media
Creative Dynamic Video Production

http://www.clicktonemedia.com
http://www.mikedoesmedia.com


Return to posts index

john sharaf
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Jan 29, 2010 at 4:45:41 pm

The actual globe used is not specified, but there is a very good chance a comparable 220v version is available. Contact the seller to ask. If there is, you're good to go. Otherwise a transformer for that much power will be too big and bulky to be practical. another solution I've used in the past is to make a pigtail power adapter that puts two 120v units in series and makes them 240 volts. Very elegent solution if proper globes are not available.

JS





Return to posts index

Michael Folorunsho
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Jan 31, 2010 at 1:22:05 pm

Hi John,

So assuming the lights are available as a 220v version will all I need to worry abut is the power adapter?

"another solution I've used in the past is to make a pigtail power adapter that puts two 120v units in series and makes them 240 volts. Very elegent solution if proper globes are not available. "

....could you elaborate on this please? I'm not too familiar with this stuff.

Thanks, Mike




Michael Folorunsho
Clicktone Media / Mike Does Media
Creative Dynamic Video Production

http://www.clicktonemedia.com
http://www.mikedoesmedia.com


Return to posts index


john sharaf
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Jan 31, 2010 at 2:59:36 pm

All you need to do is make a Y-pigtail so that the two 120v lights are in series. Both lights will need to be turned on to complete the circuit. I wish i could draw you a picture (worth a thousand words) but essentially from the two holes that come out of the wall (forget the ground) one goes to each light, them another wire goes between the two lights on their other connection, they are now in series such that 120+120=240. Lighting units that have two globes (like two-lite FAY or 2K softlights) can be internally rewired this way for 220-240.

JS



Return to posts index

Michael Folorunsho
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 1, 2010 at 10:25:15 am

Ah I see, okay, I'll look into that then. Thanks for your help John, I appreciate it.


Michael Folorunsho
Clicktone Media / Mike Does Media
Creative Dynamic Video Production

http://www.clicktonemedia.com
http://www.mikedoesmedia.com


Return to posts index

Richard Crowley
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 1, 2010 at 1:59:04 pm

By viewing the "review" video online, you can get a glimpse at the yellow nameplate on the back of the fixture. The nameplate says that it needs lamp type "FEA" (600 W) or "JPO" (1000 W) for 240V use. You might want to check to see that you can get these bulbs before making a decision. The online source "Don's Bulbs" says they have two of the FEA in stock which seems very low compared to what they stock for more popular bulbs. And I didn't see ANY source of "JPO" in a quick Google search. I'm not even sure that "JPO" is a valid ANSI code?

You may be able to find other wattage bulbs in this form-factor once you are in the UK since this is essentially an inexpensive "utility light" and uses the same kind of bulbs.

The power cord seems to be attached to the fixture, so you can't use an interchangeable cord with a plug for the UK. And most power plug adapters are not made for anywhere near the kind of power these things draw, so if it were me, I would chop off the supplied power plug and wire in a UK power plug. This is not a difficult thing to do. You can always convert it back to US if needed.

Because of the high power, don't even consider using any kind of "converter" to run 120V bulbs on 240V. The only proper way of converting for 240V would be a transformer. But a whole case of 240V bulbs is much cheaper (and infinitely lighter) than a properly-rated transformer. It just doesn't make sense on any level to try to convert power to run simple incandescent bulbs.

Mr. Sharaf's suggestion for a series adapter cable is a viable alternative, but something of a kludge, and works only with exactly two lamps. You could leave the third lamp/stand/softbox at home.

Since the lamp uses two bulbs, as Mr. Sharaf suggested, re-wiring the lamp to put the two 120V bulbs in series (for 240V) may be a viable alternative. But it would mean running at full power all the time and losing the "50%" functionality. This is not technically complex, but requires someone who understands high-power wiring in a high heat environment. Standard wiring components will fail if used in a high heat environment like the inside of a fixture like this.

The lamps will run at the power mains frequency of wherever they are plugged in. So they will not operate at 60Hz unless you are in a 60Hz country. Regardless of the voltage. Power mains frequency (50Hz/60Hz) is not a factor for incandescent lamps.


Return to posts index


Michael Folorunsho
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 1, 2010 at 6:26:07 pm

Hi Richard,

Thanks for taking the time to respond,

In regards to the bulbs, I've already enquired about that with the seller and I'm waiting for a response.

So if I was to replace the US plug with a UK plug like you suggested, and replace the the 120v bulbs with 240v bulbs, you think it will work? Should I be concerned about the dangers of this? (if any). I've rewired old UK household plugs before so I'm sure it's not hard to do like you said, I just want to make sure that this is something relatively safe and viable to attempt.

Thanks, Mike







Michael Folorunsho
Clicktone Media / Mike Does Media
Creative Dynamic Video Production

http://www.clicktonemedia.com
http://www.mikedoesmedia.com


Return to posts index

john sharaf
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 1, 2010 at 6:28:49 pm

If you don't feel capable of "re-wiring", just use ready made UK-US adapters. with the correct globes this is no problem.

JS



Return to posts index

Michael Folorunsho
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 1, 2010 at 11:38:31 pm

Great, thanks guys.


Michael Folorunsho
Clicktone Media / Mike Does Media
Creative Dynamic Video Production

http://www.clicktonemedia.com
http://www.mikedoesmedia.com


Return to posts index


Richard Crowley
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 2, 2010 at 2:17:47 am

"So if I was to replace the US plug with a UK plug like you suggested, and replace the the 120v bulbs with 240v bulbs, you think it will work?"

If it doesn't work, then you have something to discuss with the vendor. The nameplate clearly identifies 230V bulbs as an option, so I can only surmise that the vendor designed it to operate with 230V power. Note that since the current is 1/2 what it would be at 120V, there is less danger of the electrical components overheating, etc. from the current.

The kit sells for significantly less than you would expect from heavy-duty commercial equipment, so inspection of the goods before trekking across the ocean might seem prudent.

I would NOT recommend power plug adapters unless they are industrial-grade and intended for higher-current loads. They also provide an additional point of potential failure and could be lost along the way. IMHO.


Return to posts index

john sharaf
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 2, 2010 at 3:04:31 pm

I used power cord adapters all last summer on my 120v/800w Jokers with no problem whatsoever. Just adhere to the rating nomenclature on the adapters and you'll be ok. Of course, changing out the connector for the proper one is a slicker scenario, but as I recall, the writer said he did not feel confident in his skills to do so.

JS



Return to posts index

Michael Folorunsho
Re: Using 120v 60Hz light kit in 240v 50Hz country
on Feb 17, 2010 at 10:14:24 pm

John & Richard,

I just wanted to say a big thanks to all your help and advice. I order the lights and did exactly what you advised: changed the plug from a US to UK plug and swapped the bulbs from 120v to 240 bulbs...the lights work fine.

Thanks again, Mike




Michael Folorunsho
Clicktone Media / Mike Does Media
Creative Dynamic Video Production

http://www.clicktonemedia.com
http://www.mikedoesmedia.com


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]