iwire,What is hospital grade AC.I'm a canuck so we may not have it here or if we do it's not required.We use just regular ac90.We do use ISO ac90 which has both an insulated ground and bare ground in our LIM panels.
#55318 - 08/25/0509:18 PMRe: Metal clad , Armored clad ?
517.13 (a) All branch circuits serving patient areas shall be provided with a ground path for fault current by installation in a metal raceway system, or a cable having metallic armor or sheath assembly. Am i reading this wrong
#55320 - 08/26/0501:59 PMRe: Metal clad , Armored clad ?
drgnz23, you are reading 517.13(A) correctly. The metallic raceway or cable sheath shall itself be a ground path for fault current and there shall also be a wire conductor ground path for fault current.
I'm curious about how exactly this works--what do you do with the two grounds? I'm guessing that the armor ground is used to ground the box, and the insulated ground is for an isolated ground on the receptacle itself?
I don't understand what the rational is for the two grounds. If someone could explain what advantages they are supposed to bring, I would love to understand this.
#55323 - 08/26/0508:13 PMRe: Metal clad , Armored clad ?