- Mar 9, 2016
- Riverview, FL
Frank Van Alstine adamantly claimed that balanced power was dangerous, as it wouldn’t work with a common safety ground.
I've found no "hot" spots on any of my gear. I don't expect any to develop.
I follow the precaution of not connecting unnecessary items to balanced power.
As I understand it, the outlets are (Dual Pole?) GFCI protected.
I suppose I could run a GFCI triptest on both legs, and see what happens.
"Equi=Tech was started by Martin Glasband to manufacture Symmetrical Power Systems. Interested readers should check out Glasband's November 1994 Mix article "Lifting the Grounding Enigma," also available on Equi=Tech's Web site (www.equitech.com). Glasband is also the author of National Electrical Code Article 530 G, which allows the use of balanced AC for audio and video systems in the U.S."
I can't see all of the labeling on the back of my unit, but it is ETL listed...
Is the ETL Listed Mark legal equivalent to the UL Listed Marks?
Yes. The true legal requirement to test and certify products for sale in the United States is a designation by the Occupational Safety and Health Administration (OSHA) as a Nationally Recognized Testing Laboratory (NRTL). An NRTL functions to provide independent evaluation, testing, and certification of any electrically operated or gas- and oil-fired product.
ETL is recognized as an NRTL in the United States and, in a similar capacity, as a Testing Organization and Certifying Body in Canada by the Standards Council of Canada. A product bearing the ETL Listed Mark is determined to have met the minimum requirements of prescribed product safety standards. Moreover, the mark indicates that the production site conforms to a range of compliance measures and is subject to periodic follow-up inspections to verify continued conformance.
What’s the difference between the UL and ETL Listed Marks?
Nothing. Both marks demonstrate that the product that bears it has met the minimum requirements of widely accepted product safety standards as determined through the independent testing of a Nationally Recognized Testing Laboratory (NRTL). And, as part of that testing regimen, the product manufacturer has agreed to periodic follow-up inspections to verify continued compliance.
I'll admit I was a little wary when I first installed it, but no problems or surprises have been noted in the five years I've been using it.