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
ALL FOR THE CAR
Every year our industry produces more and more cars. Today while driving to meet a man of almost any profession — the engineer, doctor, architect and worker, farmer and teacher. On how...
BUILDING A CAR
(Continued. Beginning at No. 10, 1975) 5. THE MOST CRITICAL NODES Traffic safety and ease of control of desired self-made car, probably even more than serial. After all,...
