Forums/Light Sources/Low Voltage Lighting
Transformer mounting location
A Member from Previous Forum
asked this on March 21, 2011 04:15 pm
--- Originally posted by Eric Jul 7, 2009 ---
I'm looking to install the xenon low voltage strip lights in my kitchen and was wondering if anyone knew about mounting requirements for the toroidal magnetic transformers. I was hoping to buy one larger transformer to power all the under-counter strip lights in my small kitchen. However I've seen conflicting statements about just where a transformer like this can be mounted. Ideally I would like to install it in a central location in the attic above the kitchen to keep the electrical run lengths as short as possible. However I've seen people saying it needs to be mounted in an "accessible" location -in the living area of the kitchen. Some people say it should be mounted in a cabinet, some say not in a cabinet because of fire hazards, and some say it should be mounted in a recessed panel in the wall. A little confusing.
Any thoughts on this would be greatly appreciated.
Comments
--- Originally posted Jul 8, 2009 ---
Eric,
The general rule of thumb is that a transformer should be mounted on a solid surface in a dry location where it can be easily accessed for maintenance purposes, and since transformer temperatures vary depending on lamp loads etc. make certain the area allows for adequate air circulation. If you have a basement, because of heat issues, it might be better to mount it there instead of your attic. Also, if the transformer is mounted in an area where there is insulation, please be sure that the insulation is at least 3in away from the transformer. I would like to offer a more definitive answer as to whether you can or cannot install the transformer in the locations you suggest, but as you know electrical codes do vary and, therefore, we strongly recommend that you consult with a qualified electrician in your specific area who can suggest the best and safest location for the transformer installation as well as other related electrical products.
--- Originally posted by Sytteg Jul 30, 2009 ---
I think the main reason people don't run it in the attic is that is required in-wall wire which the low voltage cable sold by Pegasus is not rated.
Also as said above watch the heat, here in Oklahoma an attic can reach 160F in summer add a fully loaded transformer and little air circulation and it could melt the coils insulation or worse start a fire.
An electrician can install in-wall wire of sufficient gauge to satisfy inspectors who stick to the National Electric Code, NEC, and only to the version in your area which may not be the current edition and only a local electrician will know so if you are not sure you could just pay for a consultation.
--- Originally posted Jul 30, 2009 ---
I agree with Sytteg.
Our Xenon Low Voltage Light Strip is NOT rated to be used behind walls. Instead, non-metallic sheathed electrical cable (sometimes called ROMEX® wire) with an amperage rating of 30 amps should be used behind walls.
Sytteg's point regarding attic heat is very well taken. The transformer does need good ventilation and heat is always one of the main factors that diminishes the useful life of almost any lighting system.
Sytteg's advice about, at least, consulting with a qualified electrician is also good advice.
--- Originally posted by CaronElectric Aug 4, 2009 ---
The transformer must be located in an area that will be accessible for both repair/replacement or worst case problems/damage to it. As the transformers can become quite hot your best bet is to locate it by itself not near any material that could be damaged by heat output. That can be in a cabinet or access panel if need be. All wiring must be UL Listed and sized properly to assure no damage to the fixtures/transformer. Each city/town/state has its own guidelines. You can call your local wire inspector at your city/town hall if you don't want to call out an electrician to review.