Mauricio Mtz
New member
- Location
- Queretaro
I have a question about the boundaries. Generally a turbine compartment is classified as a Class 1 Div 2. The haz gas boundary is the turbine enclosure wall and we need to add a sealer in order to run the conduit from the haz area to the non classified location.
My question is for the hardware installed outside. There are some valves and a bubble is indicated around the valves, the bubble indicate that it is a Class I Div 2 hazardous area. There is a conduit running from the solenoid valves (explosion proof) and switches (explosion proof) there are sealers on each solenoid valve and each switch. There is a junction box near the bubble. The junction box contains only terminals and the switches and solenoid valves are wired to that junction box. According to 501.15 (A) the sealer is required if the entry metric of the junction box is trade size 2 and the JB contains terminals. The trade size is 1.5 therefore there is not need to add a sealer. My question is if we need to add a sealer on the conduit run, on the bubble limits due to the haz area change.
thanks
Mauricio Mtz
My question is for the hardware installed outside. There are some valves and a bubble is indicated around the valves, the bubble indicate that it is a Class I Div 2 hazardous area. There is a conduit running from the solenoid valves (explosion proof) and switches (explosion proof) there are sealers on each solenoid valve and each switch. There is a junction box near the bubble. The junction box contains only terminals and the switches and solenoid valves are wired to that junction box. According to 501.15 (A) the sealer is required if the entry metric of the junction box is trade size 2 and the JB contains terminals. The trade size is 1.5 therefore there is not need to add a sealer. My question is if we need to add a sealer on the conduit run, on the bubble limits due to the haz area change.
thanks
Mauricio Mtz