Canadian Agricultural Products. To check for restrictions on fruits and vegetables from Canada, you can search the FAVIR database at www.aphis.usda.gov/favir/. Click the âFresh Fruit and Vegetablesâ link to the right to learn how to use the database.
The standard voltage for the telephone system is 48 volts DC. Ringing voltage is much higher, around 90 volts AC at a low frequency. When you place a load of about 600 ohms on the line, you are off hook or connected. Telephone ringer voltage is 50.5 volts at standing and -50.5 volts at ringing.
Almost all electrical appliances come for a standard voltage. Depending where you live, this is usually about 110 volts in some areas, and about 220 volts in other areas. You can take a look at a specific appliance; there is usually a metallic sticker that has the electrical specifications.