Incredible Use A Voltage Meter To Test Landscape Lights References. If voltage is above 12 volts the lamp life will be decreased without much benefit to light output. If it is any higher, the transformer is giving out too much power and it is possible that the wires or bulbs get damaged because of it.
A continuity test can be used to determine the resistance between light fixture connectors. This is the voltage that most households get directly, and it must be made by a certified electrician. There are both analog and digital multimeters.
