I have a question regarding sealing multi-conductor tray cables in Class 1 Division 2 locations.
I believe that the multiconductor tray cable I am using contains a "gas/vaportight continuous sheath capable of transmitting gases or vapors through the cable core". One end of the multi-conductor tray cable terminates in an enclosure outside the Class 1 Division 2 area. The other end terminates in a junction box inside the Class 1 Division 2 area. Note: the junction box inside the C1D2 area is NOT explosion-proof.
NEC 501.15(E)(3) - seems to speak to "CABLES" and states "....shall NOT be required to be sealed except as required in 501.15(E)(1),...."
NEC 501.15(E)(1) - The first sentence of 501.15(E)(1) seems to address terminations in explosion-proof enclosures. The third sentence in 501.15(E)(1) speaks to "MULTICONDUCTOR CABLES with a gas/vaportight continuous sheath capable of transmitting gases or vapors through the cable core shall be sealed in a listed fitting in the division 2 location...."
Additionally, the NEC 2005 Handbook "Commentary Table 5.3" seems to indicate that cable seals in C1D2 areas ARE REQUIRED for "MULTICONDUCTOR CABLES with a continuous sheath capable of transmitting through the cable core", but are NOT required for "CABLES with a continuous sheath capable of transmitting through the cable core.
Is the distinction between tray CABLES and MULTICONDUCTOR tray cables intended?
Does the third sentance of NEC 501.15(E)(1) deal with terminations in explosionproof enclosures only or is it intended to be more broadly interpreted?
Would the multiconductor tray cable installed in the non-explosionproof junction box inside the C1D2 area require a cable seal?
I believe that the multiconductor tray cable I am using contains a "gas/vaportight continuous sheath capable of transmitting gases or vapors through the cable core". One end of the multi-conductor tray cable terminates in an enclosure outside the Class 1 Division 2 area. The other end terminates in a junction box inside the Class 1 Division 2 area. Note: the junction box inside the C1D2 area is NOT explosion-proof.
NEC 501.15(E)(3) - seems to speak to "CABLES" and states "....shall NOT be required to be sealed except as required in 501.15(E)(1),...."
NEC 501.15(E)(1) - The first sentence of 501.15(E)(1) seems to address terminations in explosion-proof enclosures. The third sentence in 501.15(E)(1) speaks to "MULTICONDUCTOR CABLES with a gas/vaportight continuous sheath capable of transmitting gases or vapors through the cable core shall be sealed in a listed fitting in the division 2 location...."
Additionally, the NEC 2005 Handbook "Commentary Table 5.3" seems to indicate that cable seals in C1D2 areas ARE REQUIRED for "MULTICONDUCTOR CABLES with a continuous sheath capable of transmitting through the cable core", but are NOT required for "CABLES with a continuous sheath capable of transmitting through the cable core.
Is the distinction between tray CABLES and MULTICONDUCTOR tray cables intended?
Does the third sentance of NEC 501.15(E)(1) deal with terminations in explosionproof enclosures only or is it intended to be more broadly interpreted?
Would the multiconductor tray cable installed in the non-explosionproof junction box inside the C1D2 area require a cable seal?