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According to :
On 30 Aug 2004 12:52:43 GMT, (Chris Lewis) wrote: According to Dave : What is the 'lightbulb' trick? Simple way to test fuse circuits for shorts: Find a small wattage lightbulb, screw it in place of the fuse. If it lights, you have a short. If it doesn't light, you don't. Make sure there's nothing else turned on the circuit. I tried that once, but I have breakers. Where do you screw the bulb into a breaker? Obviously, you can't. If you have nerves of steel, sufficient foolishness, and a low wattage 120V lightbulb in a lamp holder in a pigtail, you can accomplish the same thing by disconnecting the circuit from the breaker, turning on the breaker, and bridging the breaker screw to the hanging circuit wire with the pigtail lamp. But that would be foolish. Slightly less foolish would be to disconnect the circuit, run one pigtail wire under the breaker screw, and the other pigtail wirenutted to the circuit wire, _then_ turn on the breaker. If the lamp lights, you have a short. I don't bother doing that. It's just very convenient with fuses, and fuses only work once. Breaker don't work just once. Usually. -- Chris Lewis, Una confibula non set est It's not just anyone who gets a Starship Cruiser class named after them. |
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