Turning Moment Gauge of BS 1363-2 Figure 15

Line and neutral socket contacts shall withstand the stresses imposed upon them by the use of socket-outlet adaptors and the like.
Conformity shall be checked by the following test.

The socket-outlet shall be mounted with the engagement surface of the socket-outlet in the vertical plane and with the major axis of the line and neutral pins horizontal ensuring that the shutter mechanism does not have any effect on the results of the test. The end E of the gauge shown in Figure 15 shall be inserted into the line socket aperture as far as the pin D and a mass of 750 g ±5 g shall be suspended from pin C for 30+s.

Turning Moment Gauge of BS 1363-2 Figure 15

The socket-outlet shall be rotated through 180°approximately about an axis perpendicular to the engagement surface of the socket-outlet and the load applied to pin C for a further 30+5s. The test shall be repeated with the gauge inserted in the neutral socket aperture. After the test, the socket contact shall retain the weight gauge shown in Figure 16b) for not less than 30 s when the
engagement surface of the socket-outlet is held horizontally, with the gauge hanging vertically downwards. After the gauge is inserted, if any insulating material touches the moving parts of the contact, the test shall be repeated with this insulation removed.

Earth socket contacts shall withstand the stress imposed upon them by the attempted incorrect insertion of plugs. Earth socket contacts shall only make contact with the broad surfaces (8.05/7.80 mm) of a corresponding earth pin.

Conformity shall be checked by the following test.

The socket-outlet shall be mounted with the engagement surface of the socket-outlet in the vertical plane and with the major axis of the earth pin aperture horizontal ensuring that the shutter mechanism and any insulating material in contact with the socket contact does not have any effect on the results of the test. The end A of the gauge shown in Figure 15 shall be inserted into the earth socket aperture as far as the pin B, and a mass of 750 g ±5 g shall be suspended from pin D for 30+s. The socket-outlet shall be rotated through 180°approximately about an axis perpendicular to the engagement surface of the socket-outlet and the load applied to pin D for a further 30t5 s.

After the test the earth socket contact shall retain the weight gauge shown in Figure 16a) for not less than 30 s when the engagement surface of the socket-outlet is held horizontally with the gauge hanging vertically downwards. After the gauge is inserted, if any insulating material touches the moving parts of the contact, the test shall be repeated with this insulation removed.