Fitting a 16amp plug to a 13 amp

[Jako13!]

Is this bad practice To replace a 13amp plug with a 16 amp?

 

[Dannyboybl00]

Depends if the appliance needs 16 amps.

 

[MJPD29]

It depends on the rating of the cable whether the items needs/ is suitable for 16a supply as you will be removing the protection provided by the fuse and relying on mcb o4 rcbo controlling the circuit for overload protection.

 

[Jako13!]

It depends on the rating of the cable whether the items needs/ is suitable for 16a supply as you will be removing the protection provided by the fuse and relying on mcb o4 rcbo controlling the circuit for overload protection.

It’s a sump pump with thermal cutout fitted

 

[radiohead]

It’s a sump pump with thermal cutout fitted

If the 16a socket is protected by a 16a OCPD then it should not be an issue to remove the 13a plug and fit a 16a as long as the pump is normally fused at 13a and has a suitably rated flex

 

[davesparks]

Is this bad practice To replace a 13amp plug with a 16 amp?

That depends on what size the flex is.
If the flex is adequately protected by the 16A ocpd then it is OK.

 

[Lucien Nunes]

Bear in mind that 16A sockets are sometimes protected by 20A OCPD, possibly C20. So the cable needs to be sufficient to withstand clearing a fault on a C20.

Items with 0.75mm² flex would be adequately protected on a B16, and in continental Europe they would be connected with unfused plugs to socket outlets on 16A radials. I don't think it is adequate for a C20.

There are other cases which are definitely no-go on a B16 either, e.g. an appliance with a 0.5mm² flex that would be fused down to 3A in a 13A plug, and unfused multi-socket extensions with 1.25mm² flex where the total rated current must not exceed 13A but the plug fuse is relied upon to limit this.

 

[Lister1987]

Do the cable calculation and find out?