Your ballast is either designed to run on 120v or 240v.
Depending which you have i believe that would be your answer. If i understand your question.
1000w/120v=8.3amp drawn from your circuit
1000w/240=4.2amps drawn from your circuit
Try not to exceed 80% of your circuits capacity for safety.
Just curious, are you trying to test your ballast to determine whether its functioning properly?
Hope this helped.
voltage, amps, and watts are different things PK and Farmer Ted, thanks though
Yes I am trying to troubleshoot and see if the ballasts are putting out the correct VOLTAGE. From what I have been told, my ballasts (at least the 5 that I tested) are putting out the wrong voltage. The vendor I bought them from is clueless and its their store brand.
The ballasts are running on 240 (239 measured with meter) but I think the ballast should have the same output regardless of the incoming voltage.
On my transformer, it says OCV 435-490 but i get 300 at the hood and ballast checked with a digital meter set to AC
For those that dont know, I have had numerous bulb failures. probably 12-15 in the last 4-5 months. All bulbs are from the same manufacturer so the next 5 are from a different manufacturer and the vendor wants to wait and see if these blow. I however would like to verify that the ballasts are running properly
But if the ballast is running for several hours, the lamp is obviously running, there obviously should be a voltage that is read across the two hots going to the lamp, I am trying to find out what that voltage should be
Someone said 600
Someone said 400
My Brother in law says it should reflect the OCV Open Circuit Voltage rating marked on the transformer itself which is 430-490 I believe.
Either way my reading of 300 does not match any of those.
Correct me if I'm wrong but isn't OCV the same as no load voltage?
If the lamp is the load, I'm guessing (bad idea with electrics) the voltage would be lower, perhaps 300v.
If you're blowing bulbs, check how smooth your ballast input voltage is, it may be that.
Last edited by hydroflower; 03-07-2008 at 06:05 PM..
There could be too much resistance in your wire if the length of wire is too long between the bulb and the ballast. Eurosystem dual 600w ballasts had the same problem with their 20 ft. ballast to hood wires, they recognized this and put the ignitor in the hood, problem solved.
I don't know if this is your same problem, but it would be another place to look if you're seeing a significant voltage drop...
Last edited by trich-zilla; 03-07-2008 at 06:08 PM..
hydro you may be right. I was told to read the voltage inside the socket. Then I figured I could just check outside the socket forgetting the lamp will cause a voltage drop. DOH!!!
At the 300 Volt I am seeing no voltage drop from the ballast to the hood. I get that reading at the hood and at the ballast. Tonight when lights come on I will check on the hoods with no lights and see what I get
remember I have 9 lights running, not just one or two. I have had bulbs go bad in just about every hood. A couple have gone all white inside from some type of powder. Most have gone black at the base though indicating some type of failure. When I put another bulb in, then it works. I dont have any other ballasts except the ones setup here
The run from the ignitor to the bulb is probably from 20-50 feet depending on the hood