Each circular crosscut table saw shall be guarded by an approved hood which shall cover the saw at all times at least to the depth of the teeth. The hood shall adjust itself automatically to the thickness of, and shall remain in contact with, the material being cut, unless finished surfaces of stock may be marred by contact with the guard, in which case the guard may be raised slightly to avoid contact. The hood shall be designed so as to protect the operator from flying splinters and broken saw teeth.
34 Pa. Code § 45.125
This section cited in 34 Pa. Code § 45.82 (relating to exceptions and special applications); and 34 Pa. Code § 45.146 (relating to hoods for woodworking machinery).