Aluminum for new circuits.

[Dennis Alwon]

btw, they are making 10 copper clad aluminum. Not sure what company but they were at a fair a few years ago and had some with him. They were showing how you can use #10 for a water heater but they failed to mention that it had to be on a 25 amp overcurrent protective device . I had a discussion with someone because they thought you could use a 30 amp device....

Btw, 25 amp is fine for a residential water heater in most cases

 

[mbrooke]

#14 is fine for most residential water heaters.

 

[kwired]

#14 is fine for most residential water heaters.

Think he talking typical 4500 watt @ 240 volt electric storage tank type WH, they draw ~18.75 amps and must be treated as a continuous load so min conductor ampacity is 23~24 amps.

 

[electrofelon]

#14 is fine for most residential water heaters.

Arnt you worried that the EGC would be too small though??

 

[mbrooke]

Think he talking typical 4500 watt @ 240 volt electric storage tank type WH, they draw ~18.75 amps and must be treated as a continuous load so min conductor ampacity is 23~24 amps.

Correct. #14 with a 25 amp breaker

 

[mbrooke]

Arnt you worried that the EGC would be too small though??

So long the final temperature does not exceed 150*C, the EGC is sized correctly.

 

[electrofelon]

Correct. #14 with a 25 amp breaker

That would likely work fine, but would not be code compliant. Also I would be thinking about voltage drop unless it's a short run.

 

[mbrooke]

That would likely work fine, but would not be code compliant. Also I would be thinking about voltage drop unless it's a short run.

To code in Canada

 

[kwired]

To code in Canada

Were not in the Canadian code forum area

This not an application exempt from 240.4(D) either.

Still stuck with 75C ampacity column for terminations in almost all situations.

 

[texie]

Bring back the Corvair!

It's back: https://www.motorious.com/articles/news/utah-off-road-recovery-corvair/

 

[ppsh]

10/3 Romex is $1.62/ft
6/3 SER is $.95ft

2/3 Romex is $15/ft
1/3 SER is $2/ft

6al xhhw is $.20ft
8cu then is $.80ft


I could run 7 100a subfeeds in aluminum for the cost of one 100a copper subfeed. You have to be insane to be pulling copper if aluminum is an option right now.