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Maximum current for a unit supplied from a 13A socket, taking supply voltages into account.

Anthony Hoare
I am currently developing a heated food merchandising unit to be supplied from a 13A three pin plug.


If the unit is designed around 230V, 13A,  do I have an issue when the supply voltage is at the top of its tolerance (230V + 10% = 257V).

As I have a purely resistive load, the current drawn would be 14.3A

Is this an accepted method or should the unit be designed around 257V 13A?


Your help would be appreciated.


Tony Hoare
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  • 0
    Is the system expected to draw full current continuously or will the current drop once the system has heated up?  3kw is the normally accepted maximum continuous load for a 13A socket and even at this level low quality plugs and sockets tend to overheat.


    Best regards


    Roger
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  • 0
    Is the system expected to draw full current continuously or will the current drop once the system has heated up?  3kw is the normally accepted maximum continuous load for a 13A socket and even at this level low quality plugs and sockets tend to overheat.


    Best regards


    Roger
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