discharge light

  1. eveares

    Timeguard 24hr Immersion Timer and 70W HPS light?

    My granddad wants a 70W HPS lamp fitted under a big tree in his garden and so I have gone ahead and order the required parts. The key parts being a TimeGuard NTT01 24hr immersion timer, a Photocell, and of course the 70W HPS light fixture. Wired like so: Fused Spur > Timer > Photocell > HPS...
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    • discharge lamp discharge light flood light hps light bulb sodium switch time switch timer
    • Replies: 17
    • Forum: Electrics UK
  2. eveares

    70W HPS bulb on 230V mains with No Ballast - Just trips the MCB :(

    So today I did a little experiment and thought I would see what would happen if one powered up a 70W HPS bulb with an internal ignitor directly on the 230v mains without using a ballast. Sadly not much happened other than a brief flash for a fraction of a second before the MCB for the circuit...
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    • Thread
    • 70w ballast discharge lamp discharge light hps ignitor light light bulb sodium
    • Replies: 26
    • Forum: Electrics UK
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