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
RENAULT AG-1 TAXI DE LA MARNE
The car company Les automobiles Renault index of AG was in its time the most popular not only in France but also in many other countries. Unpretentious, cheap — not coincidentally, these...
MODE SPOT WELDING
I made welding machine is a well-proven in practice a modernized version of the device description and drawings of which are published in the journal "modelist-Konstruktor" No. 3, 1966....
