Timer on/off switch for 220v?

[ilikedirt]

Question, I have a Profusion 7500w shop heater and I want to keep the shop around 50 degrees. It does such a good job even turned all the way down it keeps it a lot warmer than what I need it. So i'd like to put it on a timer or some sort of thermostat to save some electric $..

Anyone have an ideas?

 

[C96]

I thought those came with a thermostat to control the temperature…

 

[ilikedirt]

I thought those came with a thermostat to control the temperature…

It does, sorta.. but I guess the "low" setting is above the point I want to cut it off at.

 

[Norcal]

2-pole Intermatic time switch with a 208-277V timer motor would do well. BTW, 220V is a obsolete voltage not used in the US since before WW II, 240V is the standard today.

 

[ilikedirt]

2-pole Intermatic time switch with a 208-277V timer motor would do well. BTW, 220V is a obsolete voltage not used in the US since before WW II, 240V is the standard today.

Sweet, I will look for one of those..

Whoops! Shows my electrical expertise

 

[ilikedirt]

I found the timers at HD the other day. I'm thinking now I want to put it on a thermostat to where I can control exactly what temperature i'd like it to cut off at. Anyone put an auxiliary on one of these?

 

[Mustang51js]

Install a t-stat on the wall for it,this way you can lower the temp further down

 

[pattenp]

The problem you'll have is finding a line voltage thermostat that's rated to work on a 7500W heater. You'll most likely need to use a contactor controlled by a 24V thermostat.

 

[alfredeneuman]

The problem you'll have is finding a line voltage thermostat that's rated to work on a 7500W heater. You'll most likely need to use a contactor controlled by a 24V thermostat.

How about a contactor with a 240V coil, run directly from the line voltage thermostat?

The highest amp rated thermostat I've been able to find is 22A, the heater draws 31.25A so it would definitely need a contactor to do it that way in any case.

 

[pattenp]

How about a contactor with a 240V coil, run directly from the line voltage thermostat?

The highest amp rated thermostat I've been able to find is 22A, the heater draws 31.25A so it would definitely need a contactor to do it that way in any case.

Yep.. I didn't think of a contactor with a 240V coil.

 

[Autorotica]

What about a water heater timer?

Chris

 

[wyliesdiesels]

What about a water heater timer?

Chris

Would have to be rated for 7500w, preferably more. Many water heaters are 30a 240v...

 

[alfredeneuman]

Would have to be rated for 7500w, preferably more. Many water heaters are 30a 240v...

The timer that Norcal suggested would work nicely

Intermatic timers are rated at 40 amp per pole with a resistive load.