General Wiring Questions On A 240v 50amp Line

[jdlev]

Just picked up 2 of the SSRs

 

[jdlev]

You could always use this in conjunction with this.

I thought about it...but 2 of the 4" probes would probably be about the same cost with less assembly, and 2" wouldn't be that big of a diff...here's what I think I'll go with...clicky

 

[jdlev]

Just got two of these heat sinks

 

[jdlev]

I picked up 25ft of the 10/3...what type of the smaller wiring for the components will I need?

 

[wyzazz]

Depends on how many amps you're running through the wire & what kind of receptacle you're wiring it to. The below chart may help...

 

[jdlev]

Anything else I should get from Auber besides the 2 PIDs and 2 RTDs?

 

[wyzazz]

Timer? If you want to integrate that in to the control panel. Maybe some of the panel mount disconnects for the RTD's so you can disconnect the wires from both the RTD and the Control Panel if you want? Neither of those are necessary, but Auber carries them.

 

[jdlev]

Some of their stuff looks pretty interesting - like I could use them in a smoker application pretty easily for some better bbq!

 

[EarthBound]

Depends on how many amps you're running through the wire & what kind of receptacle you're wiring it to. The below chart may help...

Where did you get this chart? I thought the 80% rule is for sizing circuit breakers and is independent of the cable to be used. I've also been led to believe it's fine to run 55A through a cable that's rated for 55A. Please let me know if that's wrong.

 

[wyzazz]

Where did you get this chart? I thought the 80% rule is for sizing circuit breakers and is independent of the cable to be used. I've also been led to believe it's fine to run 55A through a cable that's rated for 55A. Please let me know if that's wrong.

You are correct, you can run 55A through a cable that can handle 55A. The chart is part of a useful spreadsheet I found a while ago that calculates all kinds of useful stuff. The 80% "rule" is for sizing circuit breakers as far as I know.

 

[AnOldUR]

The 80% "rule" is for sizing circuit breakers as far as I know.

Hope someone can correct me, but I think the 80% rule has something to do with the anticipated load from a given number of outlets on a circuit.

 

[lschiavo]

Where did you get this chart? I thought the 80% rule is for sizing circuit breakers and is independent of the cable to be used. I've also been led to believe it's fine to run 55A through a cable that's rated for 55A. Please let me know if that's wrong.

Continuous loads (expected to operate continuoulsy for 3 hours or more) are subject to conductor derating (80% rule).

Non-continuous loads which I think applies to most of our electrical builds can be sized for 100% of the conductor capacity.

 

[wyzazz]

Continuous loads (expected to operate continuoulsy for 3 hours or more) are subject to conductor derating (80% rule).

Non-continuous loads which I think applies to most of our electrical builds can be sized for 100% of the conductor capacity.

I appreciate the clarification.

 

[EarthBound]

Very nice. Thanks, guys.