[Jack Houpe]

1500 watts is most common on the shelf but make sure you don't have it too close to something that can combust or melt. Ron that is the only intent is to keep water lines and water related items from freezing. Walmart had some 375 watt heaters on the shelf and I thought would be just about right to keep the bay warm enough not to freeze, a cold snap came through Pensacola and they were gone in a blink of an eye.