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Standard wire sizes or gauges go from 0 to larger numbers. The size of a wire chosen in designing electrical circuits, which determines the current it can handle with minimal resistance. The resistance can be calculated using the formula: R=V/I, or resistance equals voltage divided by current.ĭC power can be calculated using the formula: W=V x I. The measure of resistance to current flow. Like a regular circuit breaker, the GFCB "throws" itself off when the current through it exceeds its designed current limit. When replacing a fuse, always use one with the same current and voltage rating. The cathode end is usually marked by a stripe.Ī device that is designed to destroy itself or "blow" when the current that passes through it exceeds its designed current limit.Ī safety device used to protect electrical devices under adverse conditions. Unlike a fuse, a circuit breaker can be reset when it throws.ĭirect current flows constantly in one direction, commonly from a positive lead to a negative lead.Īn electrical component that allows current flow in one direction and impedes current flow in the opposite direction.Ĭurrent flows from the cathode to the anode. The polarity is generally indicated by a stripe at one end of the part.Ī device that opens up or "throws" itself to break a circuit when the current through it exceeds its designed limit. The voltage in your home is AC voltage, in the US typically 115V AC.Īn electrical component that stores electrical energy, with a specific storage capacityĪ capacitor often has a polarity and must be installed properly.
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Because low input voltages can also harm electrical devices or make them run erratically, most surge protectors will also turn the power off when the voltage is too low.Īlternating current reverses polarity and flows alternately in both directions in a circuit. A good surge protector should react faster than a breaker to voltage increases and kick out if the voltage exceeds the safe limit of your electrical equipment. The only real difference between breakers and a commercial "surge protection" device is that standard breakers are slow to react to voltage changes. Like surge protectors, they kick out if the input voltage goes too high.
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Your RV already has surge protection devices: your main AC breaker plus the individual appliance and equipment breakers in your main breaker panel. If you buy one, make sure you are purchasing a GOOD one. Surge Protector, Yes or No?Įveryone in campgrounds seems to be purchasing surge protectors these days. It will need to be on for you to get power. It is a small switch, often near the door on the inside. Most RVs have a master switch for disconnecting your RV's power during storage.
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Your on-board or portable generator can also be the cause of problems it may stop running if your vehicle's gas tank is less than 1/4 full. The converter itself has a fuse or two, often on the front.
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