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<blockquote data-quote="Mike Sokol" data-source="post: 58946" data-attributes="member: 1989">Re: Why An Open Neutral Kills 120V DevicesI&#039;m actually writing a tutorial about festival generator power, and bonding the stage to the same generator ground rod is on my hit list as a recommendation. But that&#039;s an entire article I&#039;m currently doing research for. Much more on that subject later....My B&amp;K 309 Digital Earth Resistance Tester (say that 3 times fast...) uses a 400 Hz test tone and high-pass filter, so it ignores any 60 Hz currents already flowing through the ground rod from your AC power. So according to their directions, you don&#039;t need to disconnect your ground rod or power down your building for a ground rod impedance test. <a href="http://www.bkprecision.com/products/electrical-battery-testers/earth-resistance-meter/309-digital-earth-resistance-meter.html" target="_blank">Model 309, Digital Earth Resistance Meter - B&amp;K Precision</a></blockquote>

[QUOTE="Mike Sokol, post: 58946, member: 1989"] Re: Why An Open Neutral Kills 120V Devices I'm actually writing a tutorial about festival generator power, and bonding the stage to the same generator ground rod is on my hit list as a recommendation. But that's an entire article I'm currently doing research for. Much more on that subject later.... My B&K 309 Digital Earth Resistance Tester (say that 3 times fast...) uses a 400 Hz test tone and high-pass filter, so it ignores any 60 Hz currents already flowing through the ground rod from your AC power. So according to their directions, you don't need to disconnect your ground rod or power down your building for a ground rod impedance test. [URL="http://www.bkprecision.com/products/electrical-battery-testers/earth-resistance-meter/309-digital-earth-resistance-meter.html"]Model 309, Digital Earth Resistance Meter - B&K Precision[/URL] [/QUOTE]

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