Two way radios and garage opener

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The NEC doesn't actually speak directly to the issue of portable equipment in classified locations except luminaires. However, OSHA, MSHA and the Coast Guard does. Portable electrical/electronic equipment must be marked for the location.
 
ptonsparky said:
Ah, I thought the opener itself, as in the motor and associated controller.
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What I think that OP was concerned about was two things:

1. RF energy in general, perhaps as a fallout from hearing about RF transmitters being banned in blasting areas because of the chances of "extreme nuisance" tripping of detonators. Not a problem in general Classified areas.
2. Heat or more likely internal sparks from switches, etc. in the hand held devices with batteries. That is what rbalex is addressing.
 
GoldDigger said:
What I think that OP was concerned about was two things:

1. RF energy in general, perhaps as a fallout from hearing about RF transmitters being banned in blasting areas because of the chances of "extreme nuisance" tripping of detonators. Not a problem in general Classified areas.
2. Heat or more likely internal sparks from switches, etc. in the hand held devices with batteries. That is what rbalex is addressing.
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1. "...Not a problem in general Classified areas." This is true; however, occasionally you will see a notice prohibiting using cell phones around fuel dispensers. It isn't necessary, they aren't even being used in Division 2, but it is a result of some jurisdictions' over-analysis.
2. OSHA, MSHA and the Coast Guard actually require portable electrical/electronic equipment to be "marked" not just identified ​for the location.
 
rbalex said:
1. "...Not a problem in general Classified areas." This is true; however, occasionally you will see a notice prohibiting using cell phones around fuel dispensers. It isn't necessary, they aren't even being used in Division 2, but it is a result of some jurisdictions' over-analysis.
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I suppose they are envisioning somebody using the photo light on their phone to look into a gas tank? Better that than a match. :)

Anyway, I strongly suspect they were thinking of sparking rather than RF, since they also prohibited one-way pagers back when those were more common.
 
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