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I have some new used lights for my garage, each has 6 52w T-5 bulbs, 6x52 is 312 watts, do I have to add more wattage for the ballast(s)? It's looking like I can only put 4 lights on a 15 amp circuit and stay under the 80% rule, is that correct?

Any opinions on slab sensing thermostats? Looking for a couple, would like to be able to set down to around 40 degrees for one and probably just use the slab temp for control. Other needs to use both room and slab temp to control and will need to maintain room at 65 degrees. Would like to use...

When we setup a friends shop ten years or so ago we used some 400 watt metal halide high bay lights, we would like to replace them with T-5 fluorescent fixtures, how many t-5 bulbs will we need to get the same amount of light? A little backstory, the highbay lights were free and are 277v...

Today i ran into a wire assembly that I'm not familiar with, 4 conductor plus two smaller bare grounds, conductors look to be 6 awg copper, has a copper shielding strip wrapped around all conductors with a heavy black outer insulation. Cannot read printing on out insulation, all conductors are...

I've done a fair amount of radiant jobs but they have been almost all either poured into a basement/garage slab or a staple down with lightweight concrete poured over it. Friend of mine has a 25x35 shop built within his 50x100 steel building, the shop has 16" I joists supporting a second level...

The halogen motion light that lights up my driveway has died once again, this time the lens fell off and rain has done no favors to the bulb holder. I would like to replace it with something better, the LED versions are pretty attractive due to low power consumption and no bulbs that always...

I have a couple of Snap on pocket screwdrivers that are a 50th anniversary edition, gold metalflake in color. Still in sealed package 20$ plus shipping

I've got a grounding scenario that I'm not exactly sure how to handle, could use another point of view. I've got a customer that lives in a 12 year old condo that we just installed the 4th or 5th water heater in, talking to the water heater tech line they said there might be a ground issue in...