is there an error if the upstream circuit breaker is 16A TP and the downstream circuit breaker is 16A TPN?
The difference between 16A TP and 16A TPN isolator is the type of the circuit breaker that is used. The terminal design is the other difference.
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The quickest & easiest way to test a relay is by substitution. It can be bench tested using wires and a test lamp.
The LCM of 5a and 16a is 80a
Swap the relay with another like relay.
2 x 2 x 2 x 2 x A = 16A
18a2 + 16a + 38 = 3(6a2 + 8a + 19)
3a2+16a+5 = (3a+1)(a+5) when factored
A car relay is a remote control switch that controls electrical components. To see how you should test yours, check your owners manual. Simply swap it with another like relay.
use secondary injection test with pilots connected.
You can test a relay with and without a 9 volt battery. If you apply 9 volts to it and it's sufficient to turn on the relay, the NO switch will close and then have continuity with common. If you don't apply voltage, the NO switch will be open and not have continuity with common. You can use these continuity and resistance checks to test a relay to see if it works.