Rigo Munoz

[Rigo Munoz]

Yes i do think that is correct because a sensor who’s resistance increases with increasing temps are ptc…

[Rigo Munoz]

Yes that does make sense thank you!

[Rigo Munoz]

Here’s what i think now, since we disconnect L1 and it shows 0v wrt neutral to me that means L1 is missing! So L2 still has voltage.

[Rigo Munoz]

Yes i mentioned i have seen this specific video numerous times for two days now. I don’t understand on the video why L2 is missing! I can’t answer why there is still a reading of 120v on L1 and 120v on L2. I’m really trying my best here, i keep thinking i know then it changes. At first i thought you have a 0v reading for L1 wrt L2 because there’s no current. But we clarified this being a series circuit, current wouldn’t flow anywhere else. So if that were true then we would get 0v reading everywhere else. I keep confusing myself!!

[Rigo Munoz]

If the heating element was working just fine we would see a 240v reading. I’m sorry but by now i have just gave it my all with all my notes on hand and looking at the specific videos way to many times. I can’t figure this one out! I need someone who can really help me understand how this works!!!

[Rigo Munoz]

Disregard that last comment about the shunt. I know it’s just a measurement across

[Rigo Munoz]

I think that by disconnecting L1 you will see 0v in measurement 3 because its a shunt..

[Rigo Munoz]

Okay so here is what i know. We are seeing a series circuit, also we know there is an “open” in this circuit. We know if there is a break in a series circuit, current flow will be interrupted to the entire circuit. We need a closed circuit for current to flow. I understand if we put our leads 1 in neutral and 1 on L1 we see 120v. or 1 on L2 and neutral we see 120v. But i just don’t understand if the heating element is “good” and L2 is also good then why are we getting 0v? Where is the open at?

[Rigo Munoz]

From neutral its still sending 120v across

[Rigo Munoz]

Figure 2

[Rigo Munoz]

Yes i see we have a series circuit with one load. We have an open circuit on L2 , and only have current wrt neutral. What am i missing in all this…..

[Rigo Munoz]

sorry are we talking about F1 or F2 for question 9? For figure 1 i think we see 0v because L2 has no current.

[Rigo Munoz]

That would be a complete circuit for current to flow.

[Rigo Munoz]

I think there’s no potential difference across l1 / l2 due to no current flow.

[Rigo Munoz]

Okay i figured it out now thank you!

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