Hi

Does anyone know what is max support of the above cable in hazardous location.It is not 2m for sure.Thanks

As far as I can see in the CEC it only says

12-706(2) secured at intervals not exceeding 2m

I can't find anything in the code talking about different supporting intervals in hazardous locations for MI cable.

Anyone else out there know if there are any other rules on this matter?

I think that I found what you are looking for. Look in Appendix J.
J18-062(2)(a) on pg 487.
It says not more than 1.8m

hehehe.....that's one of those trick questions the code teacher threw at us in class. Answer is located in one of the obscure tables.

Answer is located in one of the obscure tables.
Way do not you say if you know.This is trade for good for all of us.It looks to me we are playing hide and seek.Rgards

This is a good one. If the MI cable is single conductor in a harzardous location then 18-062(2)(a) applies. If it is multi-conductor MI cable, in a hazardous location, then 18-062(2)(a) does not apply and 12-706(2) does. This is to prevent sheath currents from being a problem in a hazardous area. If it is a non-hazardous area then 12-706(2) applies wether the cable is a single or multi conductor.

Welcome aboard Rick! Sure is nice to see the canuck board growing.