On the switchboard garages, workshops and home labs often use the same sockets to connect consumers designed for high (220 V) and low (12V) voltage. The danger is the inclusion of 12-volt device in a 220-volt outlet.
To avoid this, I propose to modify the 12-volt plug as the most “risky” of an erroneous connection to the high voltage. All sorts of labels and tags eventually disappear. But if the single pin plugs somewhat shortened — it will be a constant visual reminder.
A. VINOGRADOV, Mogilev
Recommend to read
What is water karting?
Four wheels, an engine, and a driver's seat. Such are karts—tiny sports cars that surprisingly quickly gained widespread popularity in all countries of the world. Thanks to their...
GLIDER WITHOUT SECRETS
Letters a lot. One of them is to "brand" the forms of various enterprises and institutions, others on pieces of paper torn from a student notebook. But the questions are all about the...
