7. What is
a magnetic core & coil low voltage transformer?
A low voltage transformer is an electrical device that cuts 120 volts
(line voltage) into 12 or 24 volts (low voltage). It is at times made
by winding two wires around an iron core with one wire joined to the primary
side (line voltage side) and the second wire joined to the secondary side
(low voltage side). In the case of low voltage halogen lighting the low
voltage transformer has an input or primary voltage of 120 volts and an
output or secondary voltage of 12 or 24 volts.
8. What type
of extension cords are recommended for use?
An extension cord being used in a temporary short-term situation should
generally be of larger diameter than the cord on the appliance that is
plugged into it. Also ensure that if the appliance is equipped with a
ground pin the extension cord must also be equipped as such. Power bars
with built-in breakers are a good
alternative to standard extension cords.
9. Should I
upgrade my entire electrical service?
If you presently have a 60 amp service then yes, definitely. if you have
a 100 amp service, we can do a load calculation and we will ask you some
questions about your usage present and future and make a recommendation
whether or not you should consider upgrading to 200 amp, if you are popping
your main 100 amp fuse or breaker on occasion then the answer is yes.
Some older 100 amp services are prime candidates for replacement and deterioration
can/ will cause future problems so at the point of upgrading a panel an
assessment should be done to see if the exterior service equipment is
deteriorated enough to warrant replacement at the same time.
10. Why does
my florescent fixture make a humming sound?
The ballast in florescent fixtures often causes a humming sound while
the fixture is on. There are a number of possible causes for this. One
cause could possibly be loose laminations in the core. However, manufacturers
claim that this is not common. Another, more likely cause, can be magnetostriction.
Magnetostriction is the deformation of a ferromagnetic material subjected
to a magnetic field. In other words, when the magnetic field produced
by the ballast slightly changes the positions of the molecules in the
metal, this creates a constant cycle of shrinkage and expansion that produces
an audible hum.Another possible cause, (or at least may contribute to
the cause) is the way the ballast is mounted onto the surface. A simple
fix is to install vibration-isolation pads between the ballast and its
mounting surface to dampen the noise.
11. I have
never had a doorbell installed. Is there an easy and quick way to install
Yes. You can install a wireless doorbell or a Wi-Fi enabled video doorbell.
12. Do I need
a GFCI Receptacle?
Yes. In wet areas, such as baths and kitchens. Codes today require GFCI's
within 1.5m of any sink (wash basins complete with drainpipe)and on all
garage, basement, and outdoor outlets. GFCI's (ground-fault circuit interrupters)
shut down circuits in 4 milliseconds, before current can cause a deadly
shock. As an alternative, GFCI breakers can be installed on the main panel.
But then every time one trips, you have to go down to the basement to