Posted By Derek Rooney Hi i'm looking for a bit of help please, i'm in the process of carrying out a Risk Assessment on the above subject. I'm from a Commercials vehicle workshops and some of our new customers have diesel tankers. My issue is with portable lights and other electrical equipment - should these be a low voltage supply not exceesing 25v? and should all other cables me metallic screened & protected by a rubber sheath? I beleive this would be the case with Petrol or LPG tankers would it still be the same with Diesel? Any ideas? Thanks very much Derek