Using either the top or side or bottom knockouts are acceptable.
Most cable clamps are only listed for 2 flat or 1 round cable. They can be plastic or metal and must be used. The cable sheath needs to extend at least 1/4" into the box.
BTW it is 120 and 240 volts.
Most cable clamps are only listed for 2 flat or 1 round cable. They can be plastic or metal and must be used. The cable sheath needs to extend at least 1/4" into the box.
BTW it is 120 and 240 volts.