400 watt metal halide
- Thread starter domnic
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aelectricalman
Senior Member
- Location
- KY
Re: 400 watt metal halide
I just erased my post so no harm can be done.
[ May 24, 2005, 08:37 AM: Message edited by: aelectricalman ]
I just erased my post so no harm can be done.
[ May 24, 2005, 08:37 AM: Message edited by: aelectricalman ]
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Re: 400 watt metal halide
I would say "no" unless you check the ballast label, or check with the manufacturer. Discharge lighting ballasts are usually made for a specific lamp's current.
I would say "no" unless you check the ballast label, or check with the manufacturer. Discharge lighting ballasts are usually made for a specific lamp's current.
james wuebker
Senior Member
- Location
- Iowa
Re: 400 watt metal halide
Larry's correct in saying that you need to see what the the?ballast has listed. Your chances are that if it had a 400 watt MH lamp in it that a 250 watt bulb won't work. Check the ballast listing and see what bulbs can be place in that fixture. If you install the incorrect bulb in this type of fixture, it could lead someone to a fire.
Jim
Larry's correct in saying that you need to see what the the?ballast has listed. Your chances are that if it had a 400 watt MH lamp in it that a 250 watt bulb won't work. Check the ballast listing and see what bulbs can be place in that fixture. If you install the incorrect bulb in this type of fixture, it could lead someone to a fire.
Jim
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: 400 watt metal halide
NO, NO, NO!!!
Using a 250 watt MH in a 400 watt fixture will do sevral things.
1. The bulb will run very hot
2. It will seem to burn brighter than the 400 does
3. It wont last very long
4. It could shatter and cause a fire from the hot glass
5. It can cause the ballast to fail by over heating it
Not a good idea as it also voids any warranty or the UL listing of the fixture.
HID type fixtures have to have the correct bulbs, some of the small HPS will run a small range of bulbs IE. 50 watt and 70 watt but there are a very few that will.
NO, NO, NO!!!
Using a 250 watt MH in a 400 watt fixture will do sevral things.
1. The bulb will run very hot
2. It will seem to burn brighter than the 400 does
3. It wont last very long
4. It could shatter and cause a fire from the hot glass
5. It can cause the ballast to fail by over heating it
Not a good idea as it also voids any warranty or the UL listing of the fixture.
HID type fixtures have to have the correct bulbs, some of the small HPS will run a small range of bulbs IE. 50 watt and 70 watt but there are a very few that will.
aelectricalman
Senior Member
- Location
- KY
Re: 400 watt metal halide
huh, I guess I should do my research before I open my choppers.
huh, I guess I should do my research before I open my choppers.
kentirwin
Senior Member
- Location
- Norfolk, VA
Re: 400 watt metal halide
No they don't have different screw bases depending on wattage. The small wattage up to 150W (I don't think any higher) are available in medium base. The higher wattages are all mogul base. In HPS some lower wattages are available in either medium or mogul base. I don't believe that's true of MH.
No they don't have different screw bases depending on wattage. The small wattage up to 150W (I don't think any higher) are available in medium base. The higher wattages are all mogul base. In HPS some lower wattages are available in either medium or mogul base. I don't believe that's true of MH.
kentirwin
Senior Member
- Location
- Norfolk, VA
Re: 400 watt metal halide
Actually, 150W MH IS available in either medium or mogul base. I've bought both come to think of it.
Actually, 150W MH IS available in either medium or mogul base. I've bought both come to think of it.
milwaukeesteve
Senior Member
- Location
- Milwaukee, WI
Re: 400 watt metal halide
400W is the cutoff for HID lighting on bases.
400W and above are required to be mogul, below 400W are required to be med (edison) base.
400W is the cutoff for HID lighting on bases.
400W and above are required to be mogul, below 400W are required to be med (edison) base.
milwaukeesteve
Senior Member
- Location
- Milwaukee, WI
Re: 400 watt metal halide
Reading up on how HID lighting works would be a suggestion. I did have a resource online that would be a nice, informative item for you and others and myself too, but I don't have it anymore.
If someone else has a link to a valuable resource that describes the differences in HID lights and how HID lighting functions, that would be welcome by me, also.
Thank you
Reading up on how HID lighting works would be a suggestion. I did have a resource online that would be a nice, informative item for you and others and myself too, but I don't have it anymore.
If someone else has a link to a valuable resource that describes the differences in HID lights and how HID lighting functions, that would be welcome by me, also.
Thank you
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: 400 watt metal halide
Not true I install hundreds of 150, 250, 320PS bulbs with mogul bases, I don't know if there is a requirment but in this range they are manufactured with both bases and the medium base can be adapted to fit the same wattage fixtures with a mogul socket.
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