ANSI Device Numbers. From Wikipedia, the free encyclopedia. The ANSI Standard Device Numbers[1] [2] [3] denote what features a protective device supports (such as a. relay or circuit breaker). These types of devices protect electrical systems and components from damage when. an unwanted event occurs, such as an electrical fault.
The piston ring speed on the average chainsaw travels 2,500 surface feet per minute. A chain slides across the surface of the sawbar rail at around 5000 feet per minute. The chain is moving at 55 to 60 m.p.h. or a mile per minute (88 feet per second).
The Top Ten Reviews Silver Award goes to the Craftsman 18 Inch. This is the saw to go for if you need to power through your yardwork. Its 46cc two-cycle engine adds to the weight of this 15-pound chainsaw, but delivers the power you expect from such a large gas engine.