Correct size for connection box with cable outlet as per B.S standard for wiring devi

[AHMED BAYOUMI]

Ihave electric oven 10kw ,iam going to install 7*7*4.7cm connection box with cable outlet 45A as per B.S standard such as legrand with wires size are 3*16 mm" ,is the back box (7*7*4.7cm )enough for three
Wires 16mm"" if it is not enough and so imust change the box size if i install backbox (10*10*5.4cm) how can i fix the device 7*7cm to back box 10*10cm ????????

 

[Sierrasparky]

Ihave electric oven 10kw ,iam going to install 7*7*4.7cm connection box with cable outlet 45A as per B.S standard such as legrand with wires size are 3*16 mm" ,is the back box (7*7*4.7cm )enough for three
Wires 16mm"" if it is not enough and so imust change the box size if i install backbox (10*10*5.4cm) how can i fix the device 7*7cm to back box 10*10cm ????????

Welcome to the forum.
Not knowing the metric equivalent I cannot give you a response. What I do know is you need to calculate number of conductors and give them the appropriate volume plus add for a device. If the volume does not work then you need to increase the box size.

 

[AHMED BAYOUMI]

Thank you,10*10cm =4*4inch .is there device ring for fixing device 7*7cm to 4*4inch????

 

[Sierrasparky]

Thank you,10*10cm =4*4inch .is there device ring for fixing device 7*7cm to 4*4inch????

Here in the US they are available i. They are readily available in single and double gang from 3/8" to 2" deep.