This discussion is locked.

You cannot post a reply to this discussion. If you have a question start a new discussion

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

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

Parents

0 Roger B over 8 years ago

I would recomend that you should design not to exceed 13A at maximum voltage. A few minutes of overcurrent is usually ok, but 45 minutes is around the time constant of typical wiring systems. This unit may be plugged into an already load extension cable and as the attached document shows some of these are not really adequate.

Best regards

Roger
Cancel
Vote Up 0 Vote Down

Cancel

Reply

0 Roger B over 8 years ago

I would recomend that you should design not to exceed 13A at maximum voltage. A few minutes of overcurrent is usually ok, but 45 minutes is around the time constant of typical wiring systems. This unit may be plugged into an already load extension cable and as the attached document shows some of these are not really adequate.

Best regards

Roger
Cancel
Vote Up 0 Vote Down

Cancel

Children

No Data

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

Community Rules & Guidelines