Metal Halide Wiring

Discussion in 'Lighting' started by keyaam, 30 Oct 2008.

  1. keyaam

    keyaam

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    Hi All

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

    martin Reef Adict

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    Contact Leigh from Reef Inmates - he builds light units etc, he will tell you what where and how.
     
  4. viper357

    viper357 Admin MASA Contributor

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

    leslie hempel Sponsor MASA Contributor

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

    see pic below.
    th12102008826.jpg
     
  6. martin

    martin Reef Adict

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    I dunno but I am sure one must use heavy duty wire because of the high current expecially at startup??
     
  7. JD167

    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
     
  8. OP
    keyaam

    keyaam

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    Could i use 2.5 electrical wire.
     
  9. Reef Maniac

    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
     
  10. leslie hempel

    leslie hempel Sponsor MASA Contributor

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    pics as promised

    31102008998.jpg

    31102008999.jpg
     
  11. DragonReef

    DragonReef

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    That's about as definitive an answer you will get on this :thumbup:
     
  12. OP
    keyaam

    keyaam

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    Thanks guys
     

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