Panel Board 2 Pole Bolt on TQC Center Main 8 Branches 2Pole Bolt-on for Bolt On type Breakers , Panel Box TQC Main 2 pole B-on Main Bolt-On 8 Branches 2 ole TQC

Panel Box for Bolt on Main 2 pole and Bolt on Branches 8 Branches 2 Pole. 220V 225AF North American distribution boards are typically housed in sheet metal enclosures, with the circuit breakers positioned in two columns operable from the front. Some panelboards are provided with a door covering the breaker switch handles, but all are constructed with a dead front; that is to say the front of the enclosure (whether it has a door or not) prevents the operator of the circuit breakers from contacting live electrical parts within. Busbars carry the current from incoming line (hot) conductors to the breakers, which are secured to the bus with either a bolt-on connection (using a threaded screw) or a plug-in connection using a retaining clip. Panelboards are more common in commercial and industrial applications and employ bolt-on breakers. Residential and light commercial panels are generally referred to as load centers and employ plug-in breakers. The neutral conductors are secured to a neutral bus using screw terminals.