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Old 04-30-2012, 08:20 PM   #1
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Delay when turning on light switch


Hello there,

I just installed a new fixture in my dining room. It has 5 MR16 halogen bulbs. When i turn on the light switch, the lights are gradually turning on to full brightness. The process takes a between 5 to 10 seconds.

I removed one of the bulb and noticed it took a bit less time and continued until I had only 3 bulbs and then the lights are turning on instantly.

So I think its obvious that the fixture is drawing too much power from the circuit. My question is, why? What tests can I dk to find the cause? Is it a faulty switch or faulty wiring?

Thank you!

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Old 04-30-2012, 08:44 PM   #2
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Delay when turning on light switch


Are you sure they are MR16 Halogens? They do make MR16 compact florescent equivalents now.

ie


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Old 04-30-2012, 09:09 PM   #3
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Delay when turning on light switch


No I confirm they are halogen lights and not CFLs.

I am wondering if LED bulbs would fix the issues since they draw much less power than halogen lights. And if it was a wiring issue, the breaker would trip wouldn't it?
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Old 04-30-2012, 09:14 PM   #4
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Delay when turning on light switch


It has nothing to do with the wattage of the lights.
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Old 04-30-2012, 09:24 PM   #5
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Delay when turning on light switch


Then what does it have to do with?

Actually i just tried turning it on again and now it wont. I can hear a clicking sound and the lights flickers very weakly. I left it like that for a like 30 secoknds and turned the switch off. There really might be a wiring issue after all I guess.

When I installed it, there was 3 sets of wires. 2 black wires twisted together, 2 white wires twisted together, one red wire and the ground wire. BTW, I'm located in Canada,if that makes any difference in the electrical code.

I used the set of white wires and the red wire to connect the power to the fixture and i also connected the ground wire to the fixture's frame.
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Old 04-30-2012, 09:26 PM   #6
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Delay when turning on light switch


It sounds like you wired it correctly. Double check the splices and make sure the lamps are in the sockets completely.

Are these 12V MR 16s or 120V MR 16s?

Is it on a regular switch? or a dimmer?
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Old 04-30-2012, 09:35 PM   #7
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Delay when turning on light switch


I will double check everything tomorrow. This particular fixture took me 2 and a half hours to install so im not looking forward to taking it apart again lol

Thats said, the bulbs are 12V, 35 Watts and it's a regular switch.
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Old 04-30-2012, 09:38 PM   #8
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Delay when turning on light switch


That means there is either a transformer integrated into the fixture, or one is needed to be installed for the fixture.

It is possible that the integrated transformer is bad. If you are going to take it down, you might want to exchange it right away.
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Old 05-01-2012, 02:21 AM   #9
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Delay when turning on light switch


The other possiblty that you may allready overload the transfomer if this is a low voltage verison so you may want to read the transfomer info and it will tell you what the max wattage or amp on secondary side ( aka low voltage side ) if you go over the limit they can overheat or shorten the life pretty fast.

Merci,
Marc
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Old 05-01-2012, 06:40 PM   #10
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Delay when turning on light switch


Turns out that the shop where I bought my fixture sold me 35 W bulbs when the maximum capacity for the fixture is 20W bulbs. I replaced the bulbs and it's now working normally.
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Old 05-02-2012, 12:27 AM   #11
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Delay when turning on light switch


Quote:
Originally Posted by Kalquaro View Post
Turns out that the shop where I bought my fixture sold me 35 W bulbs when the maximum capacity for the fixture is 20W bulbs. I replaced the bulbs and it's now working normally.
That is the key issue you have to double check the luminaire max wattage rating I know it can happend with any type of luminaire so always double check the wattage rating on them.

At least now you know why it act up in first place.

Merci,
Marc

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