Finding intermittent faults that take out fuses when youa re somewhere else in the shop can be a pain to catch...The point of my light bulb across the breaker/fuse is the light turns ON when the breaker pops and this is very handy when you are elsewhere in the shop and the fuse is on an intermittent circuit.
Cuba: Electricity. Although the power supply in Cuba is mainly 110 volts, most of the modern hotels have dual voltage with all the sockets in the room being 220 volts. Usually in the bathroom there is an 110 volt socket suitable for shavers and charging batteries. A 4 gang 13 amp extension lead could well prove very useful.
Phone Jacks, Phone Lines, Phone Adapters, Phone Cords, RJ-11. Phone-Jack.org is an informational Web site on the types of phone jacks found throughout the world. While the most common jack plug is the RJ-11, there are many others. Each phone jack is different, and knowing what jack you might encounter will help you hook up your phone anywhere you travel.