IP Code in Motor Nameplate

[DANSES]

I am starting to curious with this one.
Usually, when we purchase motor, it will shown IP (Ingress protection) code on name plate. Let say, example, IP 55. In my understanding and also what I taking from catalog, IP code in here means enclosure protection. Enclosure means motor sealing.
How about terminal box embedded on it. Is it also IP 55??
If we go to catalog for request, its only need specify of IP code for enclosure.
Your comment is very appreciate.

 

[Pumpsonly]

The IP rating of the motor is also covered the terminal box.
There is another recent thread on the same topic.

http://www.eng-tips.com/viewthread.cfm?qid=302279&page=2

 

[DANSES]

Hi pumps,

Refer to your answer I can summarize if IP 55 in my motor name plate will be cover for enclosure motor as well as terminal box.

The basic philosophy for IP code are:
- 1st digit for protection against finger and solid object
- 2nd digit for protection against water.

Let say, I want to install motor for driving a Fan in Battery Room.
Regarding with Classification Area in Oil&Gas Industries and some Process Safety requirement, the motor shall be Class I Zone 1 Group C T3 ATEX certified.

I am trying to looking in the vendor catalog and I find if the minimum IP suitable with this case is minimum IP 55 T3.
And other vendor state for zone 1, it shall be IP 65.

For me it's very debatable. If we back to the philosophy IP code, it will be intended for Solid object and water object.
I select IP 55 because minimum enclosure protection for Class I Zone 1 is IP 55 (regarding with vendor offering)and for Hazardous protection I selected Ex "d" for motor enclosure and Ex "e" for terminal box.

If some vendor come and offer me optional / modify product such IP 55 for enclosure and IP 41 for terminal box, for me it is make sense because its a indoor location as long as Ex "d" and Ex "e" can be proven.

My Question:
1. Is it possible to achieve IP 41 and Ex "e" in same terminal box?? Is it marketable??

2. Is it possible to put IP 55 Ex "d" T3 for motor enclosure and IP 41 Ex "e" T3 for Terminal box? Have any problem with ATEX,BASEEFA, UL, and any other notified body certification for explosive atmosphere??