Compact fluorescent light bulbs may generally be used in enclosed fixtures as long as the enclosed fixture is not recessed. Totally enclosed recessed fixtures (for example, a ceiling can light with a cover over the bulb) create temperatures that are too high to allow the use of a compact fluorescent bulb.

All fluorescent lights require a ballast to function. Both magnetic and electronic fluorescent ballasts give off a slight humming noise; harmonics is the technical term. By design an electronic ballast has reduced harmonics and therefore the hum is less noticeable than when using a magnetic ballast. If the hum is louder than usual the ballast may need to be replaced. See similar questions...

Where occupational exposure remains after use of engineering and work practice controls, 5193 requires that PPE be used that is "appropriate." PPE will be considered "appropriate" only if it does not permit blood or OPIM to pass through employees' underlying garments, or to reach the skin, eyes, mouth, or other mucous membranes under normal conditions of use. PPE must retain this capability during the entire course of its use by the employee. See similar questions...

Projector/Lamphouse The projector is the most critical part of any theater's projection setup. Many newly installed theaters in the US use new or rebuilt Simplex or Century 35mm projectors. The most common Simplex models are the Simplex XL (a.k.a. Pro 35, a currently manufactured model), the older Simplex E-7, and the really old Super Simplex. The most common Century models are the SA, the older C, and the 35/70mm JJ. See similar questions...

If a CFL is used outdoors, it should be used in an enclosed fixture. The only exception is the BR38 (Globe item # 07442). This bulb may be exposed to directly to rain or snow. If used indoors, some CFLs can be used in an enclosed recessed fixtures, some cannot. If a CFL cannot be used in an enclosed recessed fixture, the marking on the plastic base will specify “not for use in totally enclosed recessed fixtures.” This is a UL safety requirement. See similar questions...

Because of electronic interference, compact fluorescent lights can not be used on dimmers. Doing so will shorten the life of the bulbs. They also should not be used in recessed or fully enclosed fixtures. See similar questions...

Caesy' is being developed by Matt Wette (mwette@csi.jpl.nasa.gov) at the Jet Propulsion Laboratory. This will be released to COSMIC soon. It will provide data structures, conversion to C-code, and many other features. See M.Wette, "Caesy: A Computer-Aided Engineering System" Proc. 1992 Symp. on Computer-Aided Control System Design Napa, CA, March 1992 Mat/C' developed at Lawrence Livermore National Laboratories by Don Gavel. This is not publically available. Matcalc', by M.Gerberg and E.J. See similar questions...

They work much the same way as a conventional lamp shade. The light level is reduced slightly. At the same time the quality of the light is changed to produce a more comfortable environment. See similar questions...

Use patented Fluoro-Lite® dyes in air conditioning and refrigeration systems. Fluoro-Lite works with all refrigerants (including R-134a) and is available in different concentrations to accommodate systems of all sizes. It can be used with refrigerant recharging or recycling equipment. See similar questions...

The EVOLT E-500 is USB Auto-Connect (mass storage) and is compliant with USB 2.0 Full-Speed specifications. See similar questions...

If there is any possibility that a rupture of the tubing could contaminate the potable water, use non-toxic propylene glycol. If contamination is impossible, automotive type ethylene glycol may be used. See similar questions...

We are more than happy to do commercial work and there is no need to set up an account, we could be with you the same day. See similar questions...

We recommend using the PAR-38S PAR cans available on our Accessory Zone page for indoor applications. The cans are made of steel rather than the flimsy aluminum cans that are so common. They use standard screw-in base flood lights and come with gel holders and a hanging bracket for mounting the fixture. The unit also has a five foot power cord with a grounded plug. Another big advantage to using PAR cans is that you can swivel and tilt the can so that it is pointed exactly where you want it. See similar questions...

We can offer different types of contracts. We are quite flexible and ready to consider your suggestions. The following are the most common options: The project is taken up at a fixed price or at fixed person-hours time effort at a pre-fixed hourly rate. This is done on the basis of the complete design and specifications sent by the client. The estimate done by Nous' estimation team and the project will be taken up by Nous on approval by the client. See similar questions...

Yes, most ceiling office lighting systems use 200 to 400 watts per office. If you use a task light in addition to your overhead lights, you probably use an additional 75 watts. The Berkeley Lamp system uses only 120 watts when it is operated at full power. This will reduce your lighting load by approximately 250-300 watts. See similar questions...

ABSOLUTELY NOT!! Any woman seeking an elective prenatal ultrasound with Before the Stork 4D must be under the care of a doctor for her current pregnancy and needs to have previously undergone a medical, diagnostic ultrasound to confirm the due date, screen for fetal abnormalities and to look for any other pregnancy related concerns. See similar questions...

Yes! Many GSHP systems are being installed using a multitude of systems hooked up to an array of buried vertical or horizontal loops. This simplifies zone control and internal load balancing. See similar questions...

Yes, they are. Many of these systems are being used in hospitals, retirement care facilities, the food industry, hospital industry, and government institutions such as schools and universities. The use of these systems improves indoor air quality, reduces the physical effort needed for cleaning and provides a more thorough approach to cleaning. See similar questions...