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12v 4.9amp transformer for kitchen lighting.how many 20 watt bulbs will it run?

230 volts in 50 herz. 12 volt 4.9 amps max out. 3 x 20 watt halogen lamps in the kit so i know it will run those but need 4 lights. do i need another transformer to run the 4th light?

Public Comments

  1. it may work.. with reduced power the current application is actually slightly below the theoretical demand of the lights your lights draw 60watts your power supply provides 58.8Watts Watts = voltage x amps
  2. 12v x 4.9amps = about 60watts, so they would run at about 15watts per lamp, (a bit dimmer)
  3. it will burn 4,but they will be dimmer any more and you will need to upgrade to a higher amperage 12v transformer. just be sure the bulbs are 12 volt bulbs
  4. They will run but the transformer will run a bit hotter due to extra load, for how long it will last is anyones guess.
  5. No. The circuit is designed to run three and to add the fourth without upgrading to reduce the risk of fire is not a good idea.
  6. Just get 1 x 105 va transformer, it will be ok with up to 5 x 20 watt lamps. The one that you have will have a very short life!!
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