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Can power supplies damage socket internals?

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I recently replaced a double 13 Amp. switched socket that had blown up inside. Black marks were evident by the switch on the front face plate. The D.P switches were completely ruined by an explosion. This has now apparently happened to the replacement socket. The householder reported that the socket was permanently live even with the switches turned off. The left hand outlet was showing a healthy 240 Volts and correct polarity, but the right hand socket was showing a missing Neutral.

This double socket supplies two armchairs with motors to adjust them to a comfortable position. The two chairs have power supplies that supply the chairs at 12 Volts I believe. They are connected through a 4 way trailing socket.

Is it possible that the power supplies have electronic circuitry that causes a high Voltage when switched off that could cause damage to a supply mains socket internals?

Z.

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  • 0

    We have multiple reasons to understand why it happens two of them are explained in below lines.....hope its helpfull for you.

    1) It might be short circuit due to wire mixed( L AND N Or L AND Earth are connected with each other) and it cause high current to pass and the socket is blown. In short-circuit we have Imax , means that Maximum current flow when short circuit occurs and this maximum current cause blown up the sockets and other equipment's and wires.

    2) Any internal short circuit happens inside the Power supply as most of the Power supplies ac incoming side contains VDR Voltage depended resistor  for protraction against over voltage, that VDR become short due to exciding the designed voltage limit and blown the fuse and cause the socket also to blown up.

    Thanks.

Reply
  • 0

    We have multiple reasons to understand why it happens two of them are explained in below lines.....hope its helpfull for you.

    1) It might be short circuit due to wire mixed( L AND N Or L AND Earth are connected with each other) and it cause high current to pass and the socket is blown. In short-circuit we have Imax , means that Maximum current flow when short circuit occurs and this maximum current cause blown up the sockets and other equipment's and wires.

    2) Any internal short circuit happens inside the Power supply as most of the Power supplies ac incoming side contains VDR Voltage depended resistor  for protraction against over voltage, that VDR become short due to exciding the designed voltage limit and blown the fuse and cause the socket also to blown up.

    Thanks.

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