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distribution panel click to hear : distribution panel

Set of devices forming the junction of the public electricity grid and the electric circuits of a dwelling.
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See distribution panel in : french | spanish
ground connection ground wire terminal ground/neutral bus bar neutral wire ground fault circuit interrupter single pole breaker double pole breaker main breaker knockout bonding jumper plastic insulator ground hot bus bar 120-volt circuit 240-volt circuit neutral service wire ground bond main power cable connector 240-volt feeder cable

ground connection click to hear : ground connection

Metal conductor attached to the ground wire in order to ground the entire circuit.

ground wire click to hear : ground wire

Wire conducting the current from the ground/neutral bus bar to the ground connection in the event of a short circuit.

terminal click to hear : terminal

Part of the ground/neutral bus bar to which a neutral wire and the ground wire of a circuit are attached.

ground/neutral bus bar click to hear : ground/neutral bus bar

Receives the current from the neutral grounded wires of the various circuits and conducts them to the neutral service wire and the ground connection.

neutral wire click to hear : neutral wire

Wire having no electric charge that allows the current to return to the distribution panel and the grid.

ground fault circuit interrupter click to hear : ground fault circuit interrupter

Device reducing the risk of electric shock in a humid place in the event of an accidental leak of current to the ground.

single pole breaker click to hear : single pole breaker

Protection device for a 120-volt circuit that, in the event of overload, is released and thus cuts off electricity to the circuits.

double pole breaker click to hear : double pole breaker

Protection device for a 240-volt circuit that, in the event of overload, is released and thus cuts off electricity to the circuits.

main breaker click to hear : main breaker

Mechanism controlling the supply of electricity to the hot bus bars; it allows the current to all the dwelling’s circuits to be cut.

knockout click to hear : knockout

Partially cut-out metal part that can be removed if needed in order to attach a supplementary cable to the panel.

bonding jumper click to hear : bonding jumper

Screw inserted into the metal box of the panel allowing it to be connected to the neutral hot bus bar.

plastic insulator click to hear : plastic insulator

Plate made of nonconductive material preventing the hot bus bars from coming in contact with the back of the panel.

ground click to hear : ground

Part connecting the neutral hot bus bar that allows the current from the circuits’ neutral wires to be transferred to the neutral service wire.

hot bus bar click to hear : hot bus bar

Conductive part of the panel into which the breakers for each circuit are plugged.

120-volt circuit click to hear : 120-volt circuit

Composed of one live wire, one neutral wire and one grounded wire; it allows electricity to reach a small appliance or a light.

240-volt circuit click to hear : 240-volt circuit

Composed of two lives wires, one neutral wire and one grounded wire; this allows electricity to reach devices requiring a lot of power.

neutral service wire click to hear : neutral service wire

Wire having no electric charge that, via the neutral hot bus bar, returns the current from domestic circuits to the grid.

ground bond click to hear : ground bond

Links the bonding jumper to the neutral hot bus bar.

main power cable click to hear : main power cable

Live wire conducting the electric current.

connector click to hear : connector

Device for screwing the electric-connection conduit to the panel box.

240-volt feeder cable click to hear : 240-volt feeder cable

Cable consisting of three wires, one neutral and two live, conducting an electric current from the grid to the distribution panel.