The isolated ground and the equipment ground originate from the same ground point within the transformer where they are bonded to building ground. This receptacle differs in construction from its self grounding counterpart.
Effective Grounding
Isolated ground panel wiring diagram. The white wire is used for hot in this circuit and it is marked with black tape on both ends to identify it as such. An isolated ground receptacle uses a higher level of protection for the cabling and connects to the ground bus on a panel or other insulated grounding conductor. Each receptacle and equipment grounding connector must be connected back to reference ground bus inside isolation panel to maintain equipotential grounding system. Medical isolated power panels catalog 4800ct1201r0415 2015. This circuit breaker wiring diagram illustrates installing a 20 amp circuit breaker for a 240 volt circuit. Isolated gnd bus equipment gnd bus ground bus neutral bus 208120v bus neutral l n iso.
Wiring diagram l1 l2 12 vdc com a b ri1 k1nc k1com k1no safe hazard ri2 gnd2 lim gnd test 1s1 z1m 1s2 z2m k2com k2no k2nc to remote indicator and accessories if required panel ground panel ground panel ground incoming power h2 h1 x2 x1 l1 l2 to system ground. If multiple panels serve the same space they must be bonded together. Use of an isolated equipment grounding conductor does not relieve the requirement for grounding the raceway system and outlet box ig wiring on direct connected circuits as per 25096b isolated grounding circuits where required for the reduction of electrical noise electromagnetic interference on the grounding circuit. 22 ip operating room most common ip icu like or panel but includes receptacles andor ground jacks on front panel ix dual duplex panel two operating room panels in one enclosure requires two feeders. Gnd ground equipment enclosure ig receptacle if used main breaker receptacle panel no scale receptacle wiring diagram isolated ground 26052602dgn. The grounding terminal for an igr is insulated from its metal mounting yoke.
This means you must connect the grounding terminal directly to an effective fault current path by an insulated. Isolated power panels types. The 122 gauge cable for this circuit includes 2 conductors and 1 ground. A neutral wire is not used in this circuit. In other words its isolated from outside interference that can affect electronics performance. A second panel or sub panel should have the neutral and ground terminals or bars isolated from each other this is why the main circuit feed to the sub panel must have 4 wires with a dedicated insulated wire for the neutral and a separate wire for the ground.
An isolated ground receptacle igr can reduce electrical noise but if installed incorrectly it can create a dangerous installation. To originate an ig ground wire at the transformer simply carry a separate ig ground conductor from the equipment ground point in the transformer to an isolated ground bar in the secondary panel. Do not share conduit or raceway with nonisolated circuits or isolated circuits from another system. All the ground wires bond back at the main panel together with the neutrals. 26052602 isolated ground receptacle wiring diagram alt default created date.
Gallery of Isolated Ground Panel Wiring Diagram
