Residential - Low
Voltage Electricians Serving the Houston Area!
What is low
Low voltage is an electrical
term that identifies safety considerations of an
electricity supply system based on the amount of voltage
used in a particular appliance, lighting fixture, etc..
Most low voltage systems operate everything from a
doorbell to a thermostat that controls your air
conditioning and heating in your home. While different
definitions exist for the exact voltage range covered by
"low voltage", the most commonly used ones include
"mains voltage". "Low voltage" is characterized by
carrying a substantial risk of electric shock, but only
a minor risk of electric arcs through the air.
How Safe is Low Voltage?
A 1995 study reported on
seven instances of "low voltage" electrocutions, all
occurring under conditions of high temperature and
humidity, at voltages as low as 24 a-c and 36 d-c.
OSHA has done some research into European practice. In
some countries the safe "touch voltage" voltage limit
has been set as low as 35, and 24-25 in others
(including France). In Canada, the Canadian Electrical
Code defines "extra low voltage" as "up to and including
30 volts," and national health and safety regulations
consider that voltage as the worker safety threshold.
The danger varies, of course, with the nature of the
body contact. Tabulations based on the IEC documents are
shown in the accompanying table (previous page).
The values varied for "salt- water- wet" (sweaty) skin,
and with the size of the contact area. Allowable touch
voltages increase rapidly as contact time is shortened.
The paper concluded that "a person with sweaty skin
making medium body contact between 36 and 49 volts could
suffer ventricular fibrillation." The author has
therefore suggested it would be ''prudent to lower the
shock hazard threshold in NFPA 7OE to at least that of
Class 2 circuits (30 V), if not lower." ("Class 2
circuits" are low-power signaling and control circuits,
defined in NEC Article 725, with voltage limited to
between 25 and 30.)
When considering either the risk of arcing, or the risk
of shock and possible electrocution, no one working with
electricity can afford to be complacent.
Below is a list of examples
of low voltage ambiance lighting in and around your
Voltage Linear Lighting
Voltage Rail Lighting
Voltage Disk Lighting
Are you in
need of low voltage work? If so, let our licensed
electricians help you. All our electricians have
extensive experience in residential low voltage
electrical work. Don't risk trying to do-it-yourself
when you can have an expert do it for you. Feel
confident knowing that we can get the job done right the
first time around.
CALL For available low voltage services, rates & more
information regarding low voltage