02-09-2018, 11:39 PM
Not to beat a dead horse on this issue, but again, it gets back to whether having a lightning rod, or even grounding your metal roof is actually advisable or not. If lightning hits an ungrounded metal roof we can assume that it then disperses to various paths to ground, one of which might be through you, which is bad. If the roof is grounded the lightning "decides" to follow the grounding conductor. For the most part. In fact, it will still follow every available path, according to the parallel current law. It's just that most of it will go down the lightning conductor to ground.
But wait a minute. By the same token, lightning in the atmosphere will "go through" (i.e. strike) your house to the extent that it serves as a good conductor to ground, which you have just made possible with your excellent lightning rod installation. Doesn't really make sense.
But wait a minute. By the same token, lightning in the atmosphere will "go through" (i.e. strike) your house to the extent that it serves as a good conductor to ground, which you have just made possible with your excellent lightning rod installation. Doesn't really make sense.