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
GLAZING TONGS
Carrying a large sheet of glass always difficult: and not grab onto, and not pack. But such a simple clamp, a bent of thick wire, solve the problem of not only carrying glass: using it,...
DUSHANBE STARTS
Since 1980, the "geography" of the USSR Championships in the sport of flying remained the same — start small rockets passed on two "spaceports" ("Tapani" under Tbilisi and "Aranci" near...
