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#208496 - 01/23/13 01:22 AM Re: Theelectrikid's camera returns... [Re: Theelectrikid]  
Lostazhell  Offline
Member
Joined: Feb 2004
Posts: 1,431
Bakersfield, CA (Originally Or...
TW doesn't do any better than cloth K&T under overlamped fixtures from what I've seen.. Too bad no one ever came up with a Type S adapter to limit an edison base to 60 watts...


2017 / 2014 NEC & Related Books and Study Guides

#208508 - 01/23/13 11:03 PM Re: Theelectrikid's camera returns... [Re: Theelectrikid]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,853
Brick, NJ USA
The federal gov't elimination over time of the incandescent bulbs may help the heat situation. That said, the early CFL screw-in, self ballasted, created some heat.



John

#208525 - 01/25/13 01:17 AM Re: Theelectrikid's camera returns... [Re: Theelectrikid]  
Theelectrikid  Offline
Member
Joined: Apr 2004
Posts: 810
Levittown, PA
Randy, if it wasn't for what John posted I'd be running to the patent office.

The two remaining hi-hats have 10W LED bulbs now which help greatly (and light up the stairwell a LOT better).


Is there anyone on board who knows how to fly a plane?

#208535 - 01/25/13 10:38 PM Re: Theelectrikid's camera returns... [Re: Theelectrikid]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,217
SI,New Zealand
Ian,
Over here, it is standard trade practice to use fibreglass sleeving over the phase and neutral wires that actually make contact with the bulb in light fittings.
When I say "standard practice", I mean that only the clued-up, responsible electricians are doing this.

As an Inspector, I've failed at least 2-3 installs where this has not happened.

As a Fire Officer, one of the most annoying calls to attend, is a roof fire started by an over-lamped (sometimes 150W+) fitting with the cover removed, the top of the bulb is always the hottest part (when the bulb is mounted base upwards), that heat is borne by the light socket, the terminals and ultimately the wiring attached to it.
Using fibreglass sleeving minimises the risk of a short circuit in the roof or around timber that the fitting is screwed to.


Let's face it, these days if you're not young, you're old - Red Green grin

#208537 - 01/26/13 12:25 PM Re: Theelectrikid's camera returns... [Re: Theelectrikid]  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,399
Vienna, Austria
Store-bought fixtures are usually supplied with silicone or fiberglass sleeving, but everyone knows what to do with it.


#208540 - 01/26/13 04:32 PM Re: Theelectrikid's camera returns... [Re: Theelectrikid]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,099
Estero,Fl,usa
Lamp holders are typically wired with 105c fixture wires and sometimes I see the fiberglass sleeve where it penetrates the top of the base on a ceiling luminaire. Your mileage may vary when it comes to Asian manufacturers.
They generally are arranged to keep the wire away from the lamp. It is still exposed to the heat, especially when they ignore the "60 watt" label. I guess that may be less of a problem now that our government has outlawed 75 and 100w lamps.


Greg Fretwell

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