in ripping out an old dental office to put new equipment in, i found lots of romex (12-2). the equipment supply guy tell me that all wiring needs to now be MC type. is this true? if so, does mean pulling out all existing romex and re-wiring all the way back to the panel, or can it be re-wired from boxes in the drop ceiling and brought to existing equipment and receptacles?
MC in a dental office
- Thread starter dds92
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- Illinois
- Occupation
- retired electrician
Re: MC in a dental office
If the wiring serves the patient care area, you can't use NM or MC (you can use MC of the solid or corrugated armor type, but not of the standard interlocking armor type). You must use a wiring method where the outer metal jacket or raceway is suitable for use as an EGC. In addition the raceway or cable must contain an insulated EGC. See 517.13. This wiring method is required back to the panel that feeds the branch circuit.
Don
If the wiring serves the patient care area, you can't use NM or MC (you can use MC of the solid or corrugated armor type, but not of the standard interlocking armor type). You must use a wiring method where the outer metal jacket or raceway is suitable for use as an EGC. In addition the raceway or cable must contain an insulated EGC. See 517.13. This wiring method is required back to the panel that feeds the branch circuit.
Don
james.burns
Member
Re: MC in a dental office
Ask your supplier for type "HCF"(health care facility mc). Similar to MC (but usually painted green). It has an insulated egc and a bare tracer that gets folded back before inserted into the connector.Widely accepted and reasonably priced. It is approved for use in walls of patient care areas.
[ June 17, 2003, 09:15 PM: Message edited by: james.burns ]
Ask your supplier for type "HCF"(health care facility mc). Similar to MC (but usually painted green). It has an insulated egc and a bare tracer that gets folded back before inserted into the connector.Widely accepted and reasonably priced. It is approved for use in walls of patient care areas.
[ June 17, 2003, 09:15 PM: Message edited by: james.burns ]
- Location
- Massachusetts
Re: MC in a dental office
The product james has described is Hospital grade AC cable article 320.
You can ask for this but you will not get it.
The product james has described is Hospital grade AC cable article 320.
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