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High and low voltage separation

High and low voltage separation

High and low voltage separation

I am doing a small retail job and was left with almost no room for a phoneboard in an equipment room.  I could install it on the same wall as the breakers and transformer but I don't like the proximity <3ft.  I went through the TDMM and could not get a decisive answer.  Any firm ideas?  Thanks.

RE: High and low voltage separation

Phone system are not as sensative as data but sounds like a small job so do not even worry about it :)

~Will Nortel soon be NoTel??~

RE: High and low voltage separation

Phone systems may not be as sensitive as data but the NEC is still pretty clear.  You shouldn't be on that wall.  Borrow a copy of the NEC and look at section 110-26.  

To sum up:  section 110-26 requires working space for all systems.  The accepted practice is not to require working space for low-voltage and limited energy systems but to install these systems so as not to encroach on the working space of the power equipment.  

Those requirements are:  space in front must be a minimum of 30 in. wide and never less than the width of the equipment and equipment must be installed so that the working space from the low-voltage equipment to nearby higher voltage equipment is not less than 3 ft measured from the enclosure front.

I've seen stuff put in much closer but it just becomes a pain for everyone to perform any work when you overcrowd a closet.

RE: High and low voltage separation

Thanks for the help.

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