Dried Grapes were used to plug the sockets.
Sticking Fingers into Sockets was created on 2007-07-03.
cotton
they were born to be black
PAINT
This question may be asking if it is safe to plug things into mains wall sockets if they have been left switched on with nothing plugged-in, and if it is safer to plug things in only after the sockets have been switched off? If, and only if, that is the meaning of this question, the answer is probably: It should not be dangerous to plug something into a switched-on socket but it is always a good idea - and safer - to switch off any socket before you plug anything into it. +++ The hazard is not in the plugging-in, but may arise from the appliance itself, if it starts unexpectedly.
they only use electricity when an appliance is plugged in and switched on
Someone may have switched the sockets in the back of the lenses.
No. You can think of the lamp (or whatever you put into the socket) as one more switch in parallel - if it is taken away, no current can pass through the circuit.
"Main sockets" is referring to fuse sockets, particularly the main fuse sockets for a fuse panel.
Wrenches and sockets all come in multiple sizes. Which you have depends on the kind of work you do. Most craftsmen have a full set of metric wrenches and sockets and a full set of SAE wrenches and sockets. Most get by with 3/8 drive sockets, but many have 1/2 sockets as well.
Dried Grapes were used to plug the sockets.
They shouldn't, so no.
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Dried Grapes were used to plug the sockets.
Dried Grapes were used to plug the sockets.
Sticking Fingers into Sockets was created on 2007-07-03.