Metal Halide Wiring

keyaam

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Hi All

What type of wire can I use to connect a 150w MH bulb to the ballast.
 

martin

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Contact Leigh from Reef Inmates - he builds light units etc, he will tell you what where and how.
 

viper357

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It's probably wrong but I just used normal 3 core plug wire.
 

leslie hempel

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i use .5mm single strand insulated cable.. or extention cord wire... works perfectly fine.

see pic below.
th12102008826.jpg
 

martin

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I dunno but I am sure one must use heavy duty wire because of the high current expecially at startup??
 

JD167

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Good question actually... I use flex on my 250W MH's, but thought about replacing it with a slightly thicker wire. Will it make any difference? Apart from fixing a potential fire hazard... :p
 

Reef Maniac

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The best would be to use silicon insulated wire made specifically to withstand high temperatures. You don't need to worry about the thickness of the wire, as 150W power usage would require only 0.7A current, and even if you doubled that to allow for the power consumed by the ballast (heat...) it would only use 1.4A. If, however, the lights are far away from the ballast, you should rather use thicker wire (2.5mm²) as the capacitance in the wire becomes a factor.

I would not use cheap flex as the voltage used to strike the arc in the lamp is +4000V, and one needs to have well insulated wire for safety.

Hennie
 

leslie hempel

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pics as promised

31102008998.jpg


31102008999.jpg
 

DragonReef

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The best would be to use silicon insulated wire made specifically to withstand high temperatures. You don't need to worry about the thickness of the wire, as 150W power usage would require only 0.7A current, and even if you doubled that to allow for the power consumed by the ballast (heat...) it would only use 1.4A. If, however, the lights are far away from the ballast, you should rather use thicker wire (2.5mm²) as the capacitance in the wire becomes a factor.

I would not use cheap flex as the voltage used to strike the arc in the lamp is +4000V, and one needs to have well insulated wire for safety.

Hennie
That's about as definitive an answer you will get on this :thumbup:
 

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