caporter
Electrical
- Nov 7, 2008
- 28
Am I being overly restrictive and costing the company more money than necessary?
Our cleanroom floors are used for return air and running various utilities to the manufacturing tools. As such I believe they fall into the "other space used for environmental air" described in NEC 2008 300.22(C) and do not meet the requirements for section 645.4 in any way.
My clients (process engineers) are wanting to install Varian scroll pumps, place outlets, and run power cords (SO) for the tools under the floor. There is also extensive use of liquid tight flexible metal conduit with the standard PVC jacket under the floor. I believe these are all in violation of current code but may have been allowed under older versions.
I am requiring the LFMC (sealtite) to be low smoke halogen free (listed for restricted or self contained ventilation areas) and rejecting requests to place electrical devices, power cords and all under the floor.
Does this all sound right or am I over looking exceptions that might save time & money while being safe?
Our cleanroom floors are used for return air and running various utilities to the manufacturing tools. As such I believe they fall into the "other space used for environmental air" described in NEC 2008 300.22(C) and do not meet the requirements for section 645.4 in any way.
My clients (process engineers) are wanting to install Varian scroll pumps, place outlets, and run power cords (SO) for the tools under the floor. There is also extensive use of liquid tight flexible metal conduit with the standard PVC jacket under the floor. I believe these are all in violation of current code but may have been allowed under older versions.
I am requiring the LFMC (sealtite) to be low smoke halogen free (listed for restricted or self contained ventilation areas) and rejecting requests to place electrical devices, power cords and all under the floor.
Does this all sound right or am I over looking exceptions that might save time & money while being safe?