What happens if you light a 20,000 watt light bulb?

  • A maximum wattage rating on many fittings. If any of yours do, it’s the highest wattage you can safely use in that fixture. Any bulb that draws even a little more current than the fixture’s maximum rating—for example, a 75W bulb in a fixture with a 60W maximum rating—risks causing a fire.
  • A label showing the maximum wattage rating is necessary on any modern fixture. If the light bulb is removed, it will be visible inside the fixture. Of course, unless you know differently, it’s safer to presume it contains less heat-resistant wiring. However, the issue of the maximum safe power remains unanswered.
  • Three factors influence the maximum safe wattage of a fixture. The first is the amount of heat produced by a specific light bulb. Another factor to consider is the fixture’s maximum heat tolerance. Whether the fixture is enclosed or open. If it is open, especially if it’s open on top, the maximum safe wattage will be higher. The larger the bulb may be, the easier it is for heat to escape from it.