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Voltage and Amps…oh my!
One of the most useful tools for an electrician is the Multimeter. As the name implies, this device can be used to check multiple different parameters. Notably Multimeters, albiet note there are many variations, can be used to check for Alternating Current (AC) and Direct Current (DC) voltage or amps, frequency, the continuity of a wire (measured in ohms), and often they can also be used to check special characteristics of electrical components (i.e. capacitors and diodes).
AC voltage checks are typically noted by a “V” with a squiggly line above it (~). This type of power changes direction on a specific interval, i.e. 120 volts at 60 Hz. DC voltage is noted on the meter with a “V” and a solid line and dotted line above it. This type of power only travels in one direction and does not have a variation in frequency, i.e. many DC devices in our homes today are powered by 5 VDC.
Amperage checks can also be conducted on a Multimeter, using the section of the meter noted with a “A” and either the ~ or solid lines above depending on if you are checking AC or DC amps. The primary difference with a amp check is you will need to make a break in your circuit and then complete the circuit using the Multimeter leads.
Continuity checks are conducted by setting the meter to the “Ω” symbol. Continuity is measured in ohms and tells…
