Jump to content
Did you know?
  • The original Rudolph did not have a red nose. In that day and age, red noses were seen as an indicator of chronic alcoholism and Montgomery Ward didn’t want him to look like a drunkard. To complete the original picture, he was almost named Reginald or Rollo.
  • The Christmas wreath was originally hung as a symbol of Jesus. The holly represents his crown of thorns and the red berries the blood he shed.
  • The three traditional colors of most Christmas decorations are red, green and gold. Red symbolizes the blood of Christ, green symbolized life and rebirth, and gold represents light, royalty and wealth.
  • Tinsel was invented in 1610 in Germany and was once made of real silver.
  • The oldest artificial Christmas trees date back to the late 1800s and were made of green raffia (think grass hula skirts) or dyed goose feathers. Next the Addis Brush Company used their machinery that wove toilet brushes to create pine-like branches for artificial Christmas trees that were less flammable and could hold heavier decorations.
  • ‘Jingle Bells’ – the popular Christmas song was composed by James Pierpont in Massachusetts, America. It was, however, written for thanksgiving and not Christmas.
  • Coca-Cola was the first company that used Santa Claus during the winter season for promotion.
  • Hallmark introduced their first Christmas cards in 1915.
  • The first recorded date of Christmas being celebrated on December 25th was in 336, during the time of the Roman Emperor Constantine. A few years later, Pope Julius I officially declared that the birth of Jesus would be celebrated on that day.
  • Santa Claus's sleigh is led by eight reindeer: Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Dunder (variously spelled Donder and Donner), and Blixem (variously spelled Blixen and Blitzen), with Rudolph being a 20th-century inclusion.
  • Outdoor Christmas lights on homes evolved from decorating the traditional Christmas tree and house with candles during the Christmas season. Lighting the tree with small candles dates back to the 17th century and originated in Germany before spreading to Eastern Europe.
  • That big, jolly man in the red suit with a white beard didn’t always look that way. Prior to 1931, Santa was depicted as everything from a tall gaunt man to a spooky-looking elf. He has donned a bishop's robe and a Norse huntsman's animal skin. When Civil War cartoonist Thomas Nast drew Santa Claus for Harper's Weekly in 1862, Santa was a small elflike figure who supported the Union. Nast continued to draw Santa for 30 years, changing the color of his coat from tan to the red he’s known for today.
  • Christmas 2018 countdown has already begun. Will you be ready???
  • Why do we love Christmas? It's all about the traditions. In this chaotic world we can miss the "good old days." Christmas reminds us of that time.
Sign in to follow this  
jeff

gfci

Recommended Posts

How does a christmas light strand (being a two conductor device) trip a gfi. What is physically going on inside the gfi to make this happen. I thougt the device being protected would also need to be a 3 wire device -third wire being the ground of coarse.

So if a string of Christmas lightsis plugged into a gfi receplacle and its raining outside most likely the gfi will trip. why?

Share this post


Link to post
Share on other sites

jeff wrote:

How does a christmas light strand (being a two conductor device) trip a gfi. What is physically going on inside the gfi to make this happen. I thougt the device being protected would also need to be a 3 wire device -third wire being the ground of coarse.

So if a string of Christmas lightsis plugged into a gfi receplacle and its raining outside most likely the gfi will trip. why?

This might get you started.

Share this post


Link to post
Share on other sites

jeff wrote:

How does a christmas light strand (being a two conductor device) trip a gfi. What is physically going on inside the gfi to make this happen. I thougt the device being protected would also need to be a 3 wire device -third wire being the ground of coarse.

So if a string of Christmas lightsis plugged into a gfi receplacle and its raining outside most likely the gfi will trip. why?

A GFCI works by monitoring the current flow from the hot to neutral. If there is an imbalance (ie a short somewhere) then the GFCI trips. A safety ground is not needed for it to function properly. You can actually use GFCI's to protect an outlet where there is no ground available, like in an old house.

Share this post


Link to post
Share on other sites

It's my amateur understanding that a GFCI monitors the current flowing on both the hot and neutral conductors. Under normal conditions, both current flows are equal. When there is a ground fault, the current on the neutral conductor drops as the current flows from hot to ground, the GFCI senses this, and interrupts the circuit.

Share this post


Link to post
Share on other sites

Thanks for the replies. The reason I ask this question is I did not want to go out and buy 48 gfis (48 channels) if they were useless for the two conductor Christmas light strings. But now I understand it a little bit better. Thanks.

jeff

Share this post


Link to post
Share on other sites

jeff wrote:

Thanks for the replies. The reason I ask this question is I did not want to go out and buy 48 gfis (48 channels) if they were useless for the two conductor Christmas light strings. But now I understand it a little bit better. Thanks.

jeff

I am not sure what you are doing but if you are using a LOR controller (or something else) with 48 channels, you do not need 48 GFCIs. You only need one for each circuit. For example I have 10 circuits that are all GFCIs powering 80 channels with LOR.

Share this post


Link to post
Share on other sites

Yeah, just to clarify why they are important, if a GFCI trips, it means there is currentleaking outside of the circuit and that can be very bad. When it's wet outside, water can create a path for the electrons to go somewhere else, usually into the ground. So,GFCI don'tprevent every kind of shock, but they do prevent most concerning water issues (turning ona blow dryer right out of the shower, touching a damp string of christmas lights while they are on, etc. ).

Share this post


Link to post
Share on other sites

RichardH wrote:

I am not sure what you are doing but if you are using a LOR controller (or something else) with 48 channels, you do not need 48 GFCIs. You only need one for each circuit. For example I have 10 circuits that are all GFCIs powering 80 channels with LOR.

I am under the impression that each channel needs to be GFI protected. Am I wrong?

Share this post


Link to post
Share on other sites

jeff wrote:

RichardH wrote:

I am under the impression that each channel needs to be GFI protected. Am I wrong?

Richard pretty much summed it up. I'm running 48 channels on my three Showtime controllers. Each unit has got two plugs, therefore I need only six circuits to run them. All six are GFCI protected and if a leakage should happen somewhere in the 48 differentthings plugged into it, that particular outlet should trip the GFCI.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...