Resistive vs Inductive ratings

[nizak]

I am looking for a DP single throw switch that I can use as a disconnecting means for an electric unit heater.

The unit is 7500 watts 240V.

I am able to find a 40 amp rated switch but it only lists HP loads.

The switch has an indicating on/off and would work great for the way the wiring is set up in the finished wall.

Is there a conversion that would allow me to figure resistive load from a given HP rating?

I know that the motor starting will induce a much more greater load initially than a heater.

Thanks

 

[Jraef]

I am looking for a DP single throw switch that I can use as a disconnecting means for an electric unit heater.

The unit is 7500 watts 240V.

I am able to find a 40 amp rated switch but it only lists HP loads.

The switch has an indicating on/off and would work great for the way the wiring is set up in the finished wall.

Is there a conversion that would allow me to figure resistive load from a given HP rating?

I know that the motor starting will induce a much more greater load initially than a heater.

Thanks

If it's rated 40A, but ALSO shows a HP load rating, I think you will find that the HP rating equates to far LESS than 40A.

The 40A is the rating for OTHER than HP loads. 7500/240 = 31.5A, you are good to go!

 

[Besoeker]

I am looking for a DP single throw switch that I can use as a disconnecting means for an electric unit heater.

The unit is 7500 watts 240V.

I am able to find a 40 amp rated switch but it only lists HP loads.

The switch has an indicating on/off and would work great for the way the wiring is set up in the finished wall.

Is there a conversion that would allow me to figure resistive load from a given HP rating?

I know that the motor starting will induce a much more greater load initially than a heater.

Thanks

You guys need to get up to speed on SI..........