Or indeed to only part of an installation - as I recall, the 1MΩ limit is for one DB and its outgoing circuits (with all appliances disconnected, even fixed ones).
Not quite. If you get 1 MΩ for a whole board IR test, you know that all circuits have passed. However, if it is less, then you need to test each circuit separately. As you know, each may be just over 1 MΩ, but together they will fall below that value.
And before anybody else says it, the most likely explanation for a whole board result of less than 1 MΩ is that one of the circuits is below that value.
Or indeed to only part of an installation - as I recall, the 1MΩ limit is for one DB and its outgoing circuits (with all appliances disconnected, even fixed ones).
Not quite. If you get 1 MΩ for a whole board IR test, you know that all circuits have passed. However, if it is less, then you need to test each circuit separately. As you know, each may be just over 1 MΩ, but together they will fall below that value.
And before anybody else says it, the most likely explanation for a whole board result of less than 1 MΩ is that one of the circuits is below that value.
