running the inserts fans system with a inverter and group 24 battery

[Lanningjw]

My wood insert does not heat good with out the fan system circulating air around the firebox and into your living space. If I lose power I would like to use my deep cycle group 24 and a inverter.

My question is, will I need a pure sine or modified sine wave inverter to run the fan motor with out problems. We burn all the time and the fan is running 24/7.

Secondly, what size inverter am I gonna need to run the fan motor on my BK princess insert? Will a 300 watt inverter be enough?

If we run into a long power outage I will run the generator into the transfer switch and this powers the house. It seems that most of the power loss situations only last a couple of hours and by the time I drag the gen out of the shed and fill with gas its almost over and we are back on main power.

https://lh5.googleusercontent.com/_GKplugI78wg/TP_M_C3Bg6I/AAAAAAAAOW4/Q_bf93Mw6Js/s640/DSC_0055.JPG

 

[begreen]

A 300W inverter should work. Most of these motors are in the .9-1.5amp range. Check your motor rating to be sure. It doesn't need to be pure sine wave for the blower, but try to get a decently efficient inverter to minimize efficiency losses. Add a meter on the battery to the setup. You don't want to take the battery down too low.

 

[Lanningjw]

A 300W inverter should work. Most of these motors are in the .9-1.5amp range. Check your motor rating to be sure. It doesn't need to be pure sine wave for the blower, but try to get a decently efficient inverter to minimize efficiency losses. Add a meter on the battery to the setup. You don't want to take the battery down too low.

BG, Take a look at this one, http://www.donrowe.com/inverters/puresine_300.html Its Pure with high efficiency?

 

[maverick06]

those motors are probably fine with a modified sine. Pure sign waves are nasty and you dont want that.

I was very disappointed with how long my insert ran off my 300 watt inverter and a car battery. It was dead in about an hour. Just be aware, the blower probably uses a bit less than 100 watts, but the inverter wastes a lot of power. Also your battery provides a amp hour rating, but I have never found that to be a representative amount of power that the battery can deliver. just plan accordingly so that you have enough battery power for whatever you want.

I always find that power comes on exactly as soon as I have the generator ready to start.

 

[Lanningjw]

those motors are probably fine with a modified sine. Pure sign waves are nasty and you dont want that.

I was very disappointed with how long my insert ran off my 300 watt inverter and a car battery. It was dead in about an hour. Just be aware, the blower probably uses a bit less than 100 watts, but the inverter wastes a lot of power. Also your battery provides a amp hour rating, but I have never found that to be a representative amount of power that the battery can deliver. just plan accordingly so that you have enough battery power for whatever you want.

I always find that power comes on exactly as soon as I have the generator ready to start.

I thought the Pure sine inverter was the highest quality for electric motors. Can you explain?

 

[begreen]

maverick, did you mean modified sine wave? In this case it probably is not that important. If this is only for the fan motor, a cheaper modified sine-wave might suffice. http://www.donrowe.com/inverters/sam_450.html. Lanning, the unit is going to be about 85% efficient which is typical for this style inverter. maverick is correct in that usually you will not see many hours of run time on a regular battery. 1A @120vac = 10amps @12vdc, + 15% = 11.5 DC amps.

To calculate the run time, divide the battery capacity in half. Let's say your deep cycle is a 70AH battery. That gives you 35AH of safely usable capacity. If you are pulling 11.5DC amps, you have about 3 hrs run time. This is with a new battery at full capacity.