Staff Answer
May 19, 2026 - 09:56 AM
Voltmeters measure electrical potential (voltage) in a system, which is crucial for monitoring battery state-of-charge or shore power inputs. Ammeters measure the flow of electrical current (amperage).
Our Voltmeters are divided up between AC and DC meters, the two are not interchangeable. Apart from the physical dimensions the other main difference between them is the scale. We have DC meters intended for a 12 volt system where the scale reads from 8 to 16 volts, we are currently not stocking ones for 24 volt systems. Our AC meter is intended for a 120 volt system and its scale goes from 0 to 150 volts. Voltmeters connect directly across the circuit, meaning in DC circuits they go from positive to negative and in AC circuits they go from hot to neutral.
Ammeters are installed differently. The AC ammeters use a sensing coil that goes around one of the conducting wires of the circuit, the DC ammeters use a shunt that gets inserted in one of the conducting wires of the circuit (usually the negative wire)
Our Voltmeters are divided up between AC and DC meters, the two are not interchangeable. Apart from the physical dimensions the other main difference between them is the scale. We have DC meters intended for a 12 volt system where the scale reads from 8 to 16 volts, we are currently not stocking ones for 24 volt systems. Our AC meter is intended for a 120 volt system and its scale goes from 0 to 150 volts. Voltmeters connect directly across the circuit, meaning in DC circuits they go from positive to negative and in AC circuits they go from hot to neutral.
Ammeters are installed differently. The AC ammeters use a sensing coil that goes around one of the conducting wires of the circuit, the DC ammeters use a shunt that gets inserted in one of the conducting wires of the circuit (usually the negative wire)
