What is Perko switch?
The Perko Single Battery Disconnect Switch permits the battery to be shut off from the electrical system when the vessel is not in use. They can also serve as an emergency main disconnect switch in the event of an electrical problem.
Does Perko switch both batteries?
In this configuration, it is as simple as it sounds – “1” will connect your motor to battery 1, “2” will connect your motor to battery 2, and “all” will connect them all. When the motor is connected to battery 1, battery 1 will charge is the motor is running, and discharge if the motor isn’t running.
Does alternator need field disconnect?
If a battery switch is turned off while the alternator is producing current, the voltage will increase due to the sudden elimination of the load. This will burn the diodes out in the rectifier quickly. To prevent this, a battery switch with an alternator field disconnect (AFD) can be used.
Why does my boat have two battery switches?
Any boat with more than one battery will usually be set up with two “banks” of batteries – one that is used purely to start the engine (the “start” battery bank), and another (often referred to as the “house” bank) to run any items on-board that require power (like refrigeration, lights, radios, etc.).
Should a battery cutoff switch be on positive or negative?
There’s considerable controversy over whether it’s best to hook up the master-shutoff (“kill”) switch to the battery’s positive or negative side. NHRA rules still mandate a positive-side hookup, but most stock-car sanctioning bodies want the kill switch on the negative side. I vote for the negative side if it’s legal.
Do you put battery disconnect on positive or negative?
negative
When disconnecting the cables from the old battery, disconnect the negative first, then the positive. Connect the new battery in the reverse order, positive then negative.” When you are replacing your car battery, It isn’t always easy to remember the order in which to disconnect and reconnect the terminals.
How many amps does an alternator put into the battery?
People need to realize alternators have to charge batteries at a low amperage or the battery would prematurely fail. So 5 or 6 amps is a good estimate.
What is purpose of field wire on an alternator?
An alternator field disconnect is used to protect the diodes in an alternator when the battery switch is inadvertently turned to the “OFF” position. Essentially it turns off the alternator output.
What does the stator wire do in an alternator?
The stator is the coil of wire housed inside the engine case. A magnet on a shaft spins within the stator, creating alternating current (AC). That current travels along fairly heavy gauge wire through the case and into the rectifier/regulator which converts it to DC power, and at a consistent output.
Should you run your boat on both batteries?
NEVER use the “BOTH” position except to parallel both batteries if they’re both flat, almost like an attempt to “jump-start” your own engine. And don’t forget to pay attention to the warning, which says, “Stop engines before switching ‘OFF'”.