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Search: Posts Made By: jmsokol
Forum: Conversion Tutorials and How-to's 05-31-2015, 05:50 PM
Replies: 180
Views: 178,445
Posted By jmsokol
Yes, it is indeed a small world. I started...

Yes, it is indeed a small world. I started writing my No~Shock~Zone blog because a few of my pro-sound buddies said they had been shocked from their tour bus, and nobody could answer why. I took on...
Forum: Conversion Tutorials and How-to's 05-31-2015, 11:35 AM
Replies: 180
Views: 178,445
Posted By jmsokol
Very good post which sums up a lot of what I...

Very good post which sums up a lot of what I write about in these forums. And note the I'm the author of the EC&M article you linked to above where I named the RPBG (Reveres Polarity Bootleg Ground)...
Forum: Conversion Tutorials and How-to's 05-06-2015, 09:35 PM
Replies: 180
Views: 178,445
Posted By jmsokol
A ground rod's job is primarily to protect your...

A ground rod's job is primarily to protect your RV/bus from nearby lightning strikes. It does very little to protect you from a hot-skin condition in the event of an open safety ground. In fact, it...
Forum: Conversion Tutorials and How-to's 05-06-2015, 09:28 PM
Replies: 180
Views: 178,445
Posted By jmsokol
Actually, to comply with both NEC and RVIA code,...

Actually, to comply with both NEC and RVIA code, you need to have the Equipment Grounding Conductor (the ground wire) of in shore power bonded to the frame of your RV/bus. Typically that's done right...
Forum: Conversion Tutorials and How-to's 04-27-2015, 06:45 AM
Replies: 180
Views: 178,445
Posted By jmsokol
Which freezer are you planning to use? A standard...

Which freezer are you planning to use? A standard compressor based freezer will draw a pretty high peak current on startup. I've never measured it for a freezer compressor, but most electric motors...
Forum: Conversion Tutorials and How-to's 03-23-2015, 07:08 AM
Replies: 180
Views: 178,445
Posted By jmsokol
Yes, they do make isolated receptacles in white. ...

Yes, they do make isolated receptacles in white.

Note that while NEC doesn't care if you double-bond receptacle grounds to building steel (they're only concerned with safety, not sound system...
Forum: Conversion Tutorials and How-to's 03-22-2015, 07:58 PM
Replies: 180
Views: 178,445
Posted By jmsokol
Yes, that's correct. In pro-sound systems...

Yes, that's correct. In pro-sound systems double-bonding causes something called ground loop hum. And it can cause GFCI breakers to trip randomly. One way to correct that problem is to use isolated...
Forum: Conversion Tutorials and How-to's 03-22-2015, 05:11 PM
Replies: 180
Views: 178,445
Posted By jmsokol
The thing to be aware of is you only want a...

The thing to be aware of is you only want a single point of bonding the EGC (Equipment Grounding Conductor) to the frame. That allows no AC current to flow through the chassis under normal...
Forum: Conversion Tutorials and How-to's 03-22-2015, 04:27 PM
Replies: 180
Views: 178,445
Posted By jmsokol
While I'm familiar with Galvanic sacrificial...

While I'm familiar with Galvanic sacrificial anodes for boat and hot water heaters, I'm not sure of the mechanism you're concerned about for your Bus. Have you or someone you know experienced this...
Forum: Conversion Tutorials and How-to's 03-22-2015, 11:06 AM
Replies: 180
Views: 178,445
Posted By jmsokol
Nat, you should be aware that all metal...

Nat, you should be aware that all metal structures in a house, including furnace ducting, water pipes, etc.... are all required to be bonded to the incoming electrical ground, simply because there's...
Forum: Conversion Tutorials and How-to's 03-22-2015, 09:28 AM
Replies: 180
Views: 178,445
Posted By jmsokol
You're welcome. One thing to be aware of is that...

You're welcome. One thing to be aware of is that much of the insurance and legal industry in the US is driven by code compliance. So if you choose to build something that does not comply with a...
Forum: Conversion Tutorials and How-to's 03-21-2015, 10:29 PM
Replies: 180
Views: 178,445
Posted By jmsokol
I'm Mike Sokol, writer of the No~Shock~Zone blog,...

I'm Mike Sokol, writer of the No~Shock~Zone blog, which I began to write copyright back in 2010, and the book No~Shock~Zone RV Electrical Safety, which includes all my original No~Shock~Zone articles...
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