"low voltage wiring" in Class I Division I

[Sparky2000]

Can the wiring for a automatic tank gauging system be installed in a Class I Division I location without conduit? This is common practice in gas stations in the USA.

Or, can it be installed in EMT above ground in a Class I Division I location?

The question has come up in Aboveground Storage Tank class.

[ December 19, 2005, 02:48 PM: Message edited by: Sparky2000 ]

 

[jbwhite]

Re: "low voltage wiring" in Class I Division I

are these Intrinsically safe systems?

 

[hardworkingstiff]

Re: "low voltage wiring" in Class I Division I

Most ATGs are intrinsically safe. If they are then you can wire them like you would in an unclassified location. You still need to provide a seal to keep vapors from traveling out of the classified location.

Edited:
Let's not forget, low voltage does not mean intrinsically safe.

[ December 19, 2005, 07:25 PM: Message edited by: hardworkingstiff ]

 

[fbhwt]

Re: "low voltage wiring" in Class I Division I

358.12 would indicate that EMT is not allowed in a classified location except as permitted by 502.10 503.10 and 504.20