Site Lighting Fusing At Pole

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Kjc59

Member
Location
Audubon, NJ
Does the code actually dictate fusing ever being required at a site lighting pole? I can see why it would be very beneficial but is there anything that enforces it?


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well, if you're using an oversized feeder with oversized overcurrent device to feed your pole lite circuit, then dropping your conductor size down as you run up the pole ... then yes. you would need to set a fuse outside in a pole light, when you tap off of that pole lighting circuit.

i'm guessing this doesn't happen as much today as it used to, with LED lights and their reduced ampacity.
 
Master Nater said:
well, if you're using an oversized feeder with oversized overcurrent device to feed your pole lite circuit, then dropping your conductor size down as you run up the pole ... then yes. you would need to set a fuse outside in a pole light, when you tap off of that pole lighting circuit.

i'm guessing this doesn't happen as much today as it used to, with LED lights and their reduced ampacity.
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Yeah, I don’t even know how you can use oversized overcurrent protection anymore. I don’t think they ever changed the “heavy duty lamp holder” terminology which hardly applies these days


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Kjc59 said:
Yeah, I don’t even know how you can use oversized overcurrent protection anymore. I don’t think they ever changed the “heavy duty lamp holder” terminology which hardly applies these days


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i was referring to running a #4 or #6 thhn from pole to pole, on say a 40a breaker. and then running a #12 or #10 up the pole, and having to put a fuse to drop down to the #12 or #10.

as for the 'heavy duty lampholder', i guess i don't remember that one. are you referring to the pink rejectable sockets to require a UV shielding lamps on MH fixtures?
 
Master Nater said:
i was referring to running a #4 or #6 thhn from pole to pole, on say a 40a breaker. and then running a #12 or #10 up the pole, and having to put a fuse to drop down to the #12 or #10.

as for the 'heavy duty lampholder', i guess i don't remember that one. are you referring to the pink rejectable sockets to require a UV shielding lamps on MH fixtures?
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Those rejectable sockets are for pulse start MH lamps. Don’t remember them being pink, but the center contact is recessed so a standard MH lamp will not make contact. They have a faster restrike time than a standard MH hid. I always liked fuses at the bottom of the poles due to one shorted ballast didn’t take out several poles. Most of the big box stores use 20 amp 480 volt circuits, so fusing down wasn’t necessary. Grocery stores though, were mostly 208, so in order to get more lights per circui, would use 30 amp or more feeds.
 
Our state dept. of transportation standard includes fuses and a break away fuse holder, so if a pole is hit and knocked down, the fuse holder will pull apart and de-engergize the pole.

In theory, the other poles on the same circuit can still remain on.
 
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