Below FAQ are some common concerns of our clients before purchasing the theme.
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Pre Sale Questions
To test this, leave your multimeter on the ohms setting and measure the resistance between the switch pins. On a four-pin relay, these are typically labeled 87 and 30. You should see no resistance at all between these pins. If you do, that means that the pins are stuck closed and the relay is bad.
Generally, you'll want to look for point-of-use surge protectors rated for at least 200-400 joules, but 600+ joules is even better. Surge protectors rated for 1000+ joules are optimal for protecting electrical devices like lamps, small kitchen appliances, digital clocks, etc.
PNP switches ON by a low signal whereas NPN switches ON by a high signal. In PNP transistors, the P represents the polarity of the emitter terminal and N represents the polarity of the base terminal.
NEC states that circuit breakers shall be installed so that the center of the grip of the operating handle of the circuit breaker, when in its highest position, will not be more than 6 ft. 7 in. above the floor or working platform. NEC380-8a.