CD disc location

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ptonsparky

ptonsparky

Tom
Location
NE (9.06 miles @5.9 Degrees from Winged Horses)
Occupation
EC - retired
We have installed several CD sirens over the years. All the Service disconnects and control are mounted at least 8' above ground level as per installation instructions. We do not want the average idiot child pulling the handle down just because he can.

We have not had a problem with inspections but where in the NEC is this an exception to the 6'7" rule of 404.8 (A), or 230.70 (A)(1) Readily Accessible Location? 110.3 (A)(8)?
 
kwired

kwired

Electron manager
Location
NE Nebraska
I have to agree there is no exception.

I have not done any such installations, but have seen them done that way, both older and newer installations.
 
jumper

jumper

Senior Member
Location
3 Hr 2 Min from Winged Horses
Would this apply? Just a WAG.

230.76 Manually or Power Operable. The service disconnecting
means for ungrounded service conductors shall
consist of one of the following:
(1) A manually operable switch or circuit breaker equipped
with a handle or other suitable operating means

404.8 Accessibility and Grouping.
Exception No. 3: Hookstick operable isolating switches
shall be permitted at greater heights.
 
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kwired

kwired

Electron manager
Location
NE Nebraska
ptonsparky said:
I asked my State Inspector this morning. His answer "Because you are special, Tom." Being a SA is not limited to ECs. He is working and I am busy so details may wait for another day.
Click to expand...
I could see a couple of the inspectors I have worked with saying about the same thing in same situation. I still say strict interpretation of NEC would suggest that you need to put it lower and provide a lock if you don't want people tampering with it. Since it is something for public safety that kind of gets their minds thinking about other things and allowing such exceptions. Put same disconnect up high for non public safety equipment and the blinders come off.:happyyes:
 
ptonsparky

ptonsparky

Tom
Location
NE (9.06 miles @5.9 Degrees from Winged Horses)
Occupation
EC - retired
jumper said:
Would this apply? Just a WAG.

230.76 Manually or Power Operable. The service disconnecting
means for ungrounded service conductors shall
consist of one of the following:
(1) A manually operable switch or circuit breaker equipped
with a handle or other suitable operating means

404.8 Accessibility and Grouping.
Exception No. 3: Hookstick operable isolating switches
shall be permitted at greater heights.
Click to expand...

He did mention this as part of the reasoning although it does not quite fit the situation.
 
kwired

kwired

Electron manager
Location
NE Nebraska
ptonsparky said:
He did mention this as part of the reasoning although it does not quite fit the situation.
Click to expand...
I agree it does not fit the situation, that section is for switches used as switches, you have a switch used as a disconnecting means.

But at same time a disconnecting means at the top of the pole kind of is acceptable though it is not readily accessible. Should that siren be more then 50 feet above the disconnect I kind of don't see how you can call it a disconnecting means. If it is also the service disconnecting means - I see no way around allowing higher elevations for the service disconnect.
 
Besoeker

Besoeker

Senior Member
Location
UK
ptonsparky said:
We have installed several CD sirens over the years. All the Service disconnects and control are mounted at least 8' above ground level as per installation instructions. We do not want the average idiot child pulling the handle down just because he can.
Click to expand...
I read that thread title completely incorrectly....CD as in compact disc.

So excuse the ignorant Brit, but what is a CD siren?
 
G

GoldDigger

Moderator
Staff member
Location
Placerville, CA, USA
Occupation
Retired PV System Designer
Civil Defense.
As in emergency warning over a wide area.
More likely these days to be used for tornado or chemical spill warning than approaching bombers or missiles.
Like the air raid sirens we see in London WW II scenes.
 
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