[2x_Tom]

I'm installing one of the heaters below in my garage. It's 240v 4800w and will be aproximatly 25' of wire from the panel to the heater. My plan is to use a 20 amp double pole breaker, #12 thwn in conduit to a junction box with a double pole switch then a short peice (maybe 18") of 12-3 mc between the box and the unit. Is that an acceptable method or should I be using a 30 amp and #10? I probably don't need the switch but I want to keep others from using the breaker as a disconnect.

Thanks in advance for any advice.

 

[2x_Tom]

Forgot the link.
http://s3.supplyhouse.com/product_files/Qmark-FLCH4R-Product-Overview.pdf

 

[brric]

#10 @ 30 amps with disconnect unless OCPD is within sight and less than 50' away.

 

[2x_Tom]

Thank you. I will use #10. I forgot you don't want to pull 100% of the available amperage for very long.

 

[John Hook]

#10 @ 30 amps with disconnect unless OCPD is within sight and less than 50' away.

What kind of disconnect? Is a simple wall plug a disconnect?

 

[chandler48]

@John Hook it's a 6 year old thread. But to answer your question, no a simple wall receptacle on a 30 amp circuit does not fall into a category as a "disconnect". Generally a pull disconnect is advised.

 

[joe-nwt]

A receptacle and cord cap are considered a disconnect. A simple 30A 2-pole switch would be much cheaper.

 

[chandler48]

I only mentioned it due to the resistive load weakening the plug/receptacle connection over time. A direct disconnect or switch as you mention would be more viable.

 

[Shadow99]

Disconnect isn't required anyways under CEC.

Simple AC pull style may be handy, but flipping the breaker works fine up here.