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#167508 - 08/14/07 03:19 PM Existing conditions  
GETELECTRIC  Offline
Member
Joined: Oct 2003
Posts: 172
toronto canada
Refixturing an apartment,just replacing one for one.Upon starting we discover that existing fixtures are fed with flex but no ground installed,by code does the wiring have to be changed or is an as built condition similiar to a situation of adding a plug to existing knob and tube?


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#167516 - 08/14/07 08:05 PM Re: Existing conditions [Re: GETELECTRIC]  
mr_electrician  Offline
Member
Joined: Jun 2007
Posts: 106
London, Ontario
You are going to be required to bring any electrical wiring that you are dealing with up to the current code. You will need to make sure there is a bond in that flex, or run BX as a replacement. As far as the receptacle being installed on knob and tube......it is also required to be bonded. You can get around this by installing a GFI in it's place.


Never trust an electrician with no eyebrows!!

#167522 - 08/14/07 09:49 PM Re: Existing conditions [Re: mr_electrician]  
twh  Offline
Member
Joined: Mar 2004
Posts: 922
Regina, Sask.
Receptacles: 2006 26-700(7)(8)&(9)

Lights: I've never heard of an electrician telling a customer that they need to rewire a part of their home to install a new light fixture. If we get to that point, they'll just get the neighbour's son to do it. I'd be pretty impressed if you could talk someone into putting a GFI in the circuit.

Already, with the AFCI rule for bedroom plugs, by the time a customer gets a couple quotes, the bedrooms are renamed dens, sitting rooms and tv rooms.



#167523 - 08/15/07 12:17 AM Re: Existing conditions [Re: twh]  
Sixer  Offline
Member
Joined: Aug 2005
Posts: 265
Canada
Originally Posted by twh
Already, with the AFCI rule for bedroom plugs, by the time a customer gets a couple quotes, the bedrooms are renamed dens, sitting rooms and tv rooms.


Happens all the time. I understood that if it has a closet it's considered a bedroom. I haven't found anything in the code on this though. Has anyone else?


Sixer

"Will it be cheaper if I drill the holes for you?"

#167541 - 08/15/07 06:51 AM Re: Existing conditions [Re: twh]  
mr_electrician  Offline
Member
Joined: Jun 2007
Posts: 106
London, Ontario
1-As far as light and a GFI, I am not sure where you are getting this comment from as I was talking about bonding conductors with respect to the light replacement, and GFI with respect to installing receptacles on knob and tube.
2-There was never any mention of a bedroom circuit, so I am not sure how AFCI's were brought into the equation.

As far as bringing existing electrical work up to code, look at rule 2-022. I am pretty sure the inspector is going to want a bond wire for that light, especially if it is constructed of metal. Besides, for a breaker of fuse to work properly should a fault condition exist, you have to have a good path back to ground to operate that fuse or breaker. Also have a look at 10-400(g)


Never trust an electrician with no eyebrows!!

#167543 - 08/15/07 07:54 AM Re: Existing conditions [Re: mr_electrician]  
ghost307  Offline
Member
Joined: May 2005
Posts: 917
Chicago Illinois USA
If it's a fluorescent light; it won't work right without a ground anyway.


Ghost307

#167544 - 08/15/07 09:11 AM Re: Existing conditions [Re: ghost307]  
mr_electrician  Offline
Member
Joined: Jun 2007
Posts: 106
London, Ontario
That is another excellent point!! When I was an apprentice I once seen a journeyman pigtain the nuetral to the florecent light to make it work. Not a good move.


Never trust an electrician with no eyebrows!!

#167561 - 08/15/07 12:00 PM Re: Existing conditions [Re: mr_electrician]  
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
The requirement to upgrade is not well defined in codes. Here are the two main points in changing a light fixture. Wire temp rating required for new fixture and requirement for bonding. If a fixture replacement requires bonding as would for a 2 wire receptacle on K & T wiring or the new fixture requires a higher temp rated wire than is available in the outlet box then an upgrade is required. Even an antique fixture that is rewired will be rewired with a never before required bonding conductor.
If requested I have approved gfci protection where bonding a new fixture is impractical.



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