X-ray Tech - Contractor Liability

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Re: X-ray Tech - Contractor Liability

Here in Memphis/Shelby County we (electricians) run the conduit,the wireway and set the jb's.The X-ray guys come in and pull the cables from the controller to the gantry and supply the power cable and gec for us to pull through the conduit to the panel.We terminate the gec and power cable.Had the cables they supplied been long enough,I would have told them to put a connecter in the bottom of the jb,maybe even given them one if they didn't have one.As it happened,I could tell the supplied cable wasn't long enough,measured it to make sure and just told them it wouldn't reach.They gave me the 8-2 nm and I pulled it from the jb to the panel,leaving all the extra hanging out the front of the jb.The reason I p[ulled it is simple - we were hired to pull the supplied cable.According to them the engineer is fine with the 8-2.Pulling it fulfills my end of the contract.If the AHJ has no problem with the power cable,that will be the end of it.I will make sure he sees the splices,mainly because I think this is an unsafe installation.I admit I was peturbed by the Technicians attitude but I get over things like that,now it is a safety matter.I feel since the original cable was to go unbroken from the gantry to the panel and the installation was modified in the field,the cable supplying power to the machine falls under the local AHJ.I look at it this way,he has every right to go pull the cover off my panel and inspect my terminations,if the cable was unbroken to the machine that would be the end of it.With the splice in the cable his 'authority' should extend to last splice before the supply cable enters the machine.
 
Re: X-ray Tech - Contractor Liability

With the splice in the cable his 'authority' should extend to last splice before the supply cable enters the machine.
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That sounds reasonable to me. But doesn't that extend your responsibility to the last termination also? And if NM is a standard permitted wiring method, then it should be OK. I guess it all depends on how the AHJ sees it.

Steve
 
Re: X-ray Tech - Contractor Liability

Originally posted by steve66:
But doesn't that extend your responsibility to the last termination also?
Steve
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That may be! If that is the case,and the AHJ doesn't have a problem with the nm,A proper splice will be made and it becomes an extra.All part of the game we have to play.I personally think the engineer that designed the machine would have a semi heart attack if he knew about the nm,he designed the machine with a two #6 power cable and a #6 gec unbroken to the panel.The proper way to handle the situation would have been to order a new cable when it was discovered that the original was too short.I think the installers took it upon themselves to buy the 8-2 nm and lied about the site engineer approving it.I asked the office to see about getting the AHJ to the job but they say let it ride and show him on the final.Should be late next week,depending on whether or not a couple more pieces of equipment arrive or not.
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Re: X-ray Tech - Contractor Liability

The proper way to handle the situation would have been to order a new cable when it was discovered that the original was too short.
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That's about as likely as them admitting they are not above all the other contractors!! :D

I am under the impression that a lot of these machines are "refurbished" and resold. Sometimes the original manufacturer has even gone out of business. That pretty much eliminates buying a new cable!

I laid out a room for one unit, and they couldn't even get an installation manual! But that didn't stop them.

Steve
 
Re: X-ray Tech - Contractor Liability

I am under the impression that a lot of these machines are "refurbished" and resold. Sometimes the original manufacturer has even gone out of business. That pretty much eliminates buying a new cable!

Ooof! Old, refurbished and without manuals opens another can of worms. We had that discussion about a year ago. Whose to say that it is being installed according to the manufacturer or it even meets the original listing now? If you can't use the OEM parts that would surely void the listing.

-Hal
 
Re: X-ray Tech - Contractor Liability

Shawn,
Originally posted by shawn474:
AHJ not interested in anything past the breaker.
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this is not true in my area. The local inspectors as well as the state require the rooms to be complete with all Equipotential testing done, all third party listing labels visible, all Isolation test done, so that they can inspect all of it.

In radiation installations, the manufacturer must show a diagram of all raceways with cables and voltages in each raceway, cable tray, floor, and wall duct.

The building inspector and state also require a shielding certification.

Our local electrical inspector has tagged quite a few of these installations.

Roger
 
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