Posted: 2/24/2010 5:45:14 PM EDT
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if the gennies is wired via 12-2 romex to the grid for a battery charger is it gonna fry thru the battery?
no automated start stuff(removed), just the distributor, ect. |
| grid wired? i would almost guarantee it. but it really depends on how far you are from the emp event, line of sight...etc. its really hard to say for certain. limited ability to test and all. i mean most people still believe that all cars made since the 80's will quit working...(shrug)... |
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Quoted:
That would probably only fry the charger. +1. Most of the EMP voltage spike on the AC input side of the battery charger would be isolated by the transformer inside the charger - The transformer is only capable of passing low-frequency AC, so very little of the spike would be coupled to the secondary side of it. Any small spike that got through the transformer might be enough to damage the diodes connected to the transformer's secondary winding, but that's about it - Even if the battery charger was fried, the battery connected to it would absorb any remaining spike. The only exception is if the damage to the battery charger caused a short on its output - This could drain current out of the battery until it was discharged. The generator engine could probably still be started afterward, but you'd need to yank the starter rope or a connect a set of booster cables to do it. |
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Battreries will assorb the pulse and the generator will react almost like it was unconnected to the grid (and thus likely survive. The charger may or may not survive dependign on the power feed and charger design. The transformer + big honking diode design are likely to be unaffected. The diode bridge + voltage regulator is more venerable.
This is one area when isolatign the generator frame from ground will improve things. |