Outdoor Sauna panel load calculation

[Tutone]

Hi guys,
Installing a exterior subpanel on a dwelling unit. The sub panel will hold a 50 amp breaker for a 10.5kw sauna and a 15 amp breaker for two LED lights and one general use receptacle.
Gonna run 3/4inch EMT with #6 THWN conductors (2 hots, 1 grounded conductor, 1 #10 grounding conductor) 60 amp breaker inside for the subpanel.
My calculated load is 43.75 amps for the sauna. Am I OK adding the one 15 amp circuit for general lighting.
Thanks in advance for any info on this setup.

 

[infinity]

My calculated load is 43.75 amps for the sauna. Am I OK adding the one 15 amp circuit for general lighting

Given the loads I don't see an issue with adding the 15 amp branch circuit to the feeder calculation with a 60 amp feeder.

 

[Tutone]

Given the loads I don't see an issue with adding the 15 amp branch circuit to the feeder calculation with a 60 amp feeder.

Thanks Infinity. Figured I was OK. It would get pretty spendy if I had to go to a 70 amp feeder for this.

 

[Sierrasparky]

Curious, Is a Sauna heater considered a continuous load?

 

[suemarkp]

Curious, Is a Sauna heater considered a continuous load?

I would think not. Once they heat up, the heating elements cycle on and off. Ours takes about 20 minutes to heat up. Also know of no one who spends more than an hour in a sauna and its typically 30 minutes or less. I think its controller may also have a 60 minute max time setting before it shuts off.

 

[suemarkp]

Hi guys,
Installing a exterior subpanel on a dwelling unit. The sub panel will hold a 50 amp breaker for a 10.5kw sauna and a 15 amp breaker for two LED lights and one general use receptacle.
Gonna run 3/4inch EMT with #6 THWN conductors (2 hots, 1 grounded conductor, 1 #10 grounding conductor) 60 amp breaker inside for the subpanel.
My calculated load is 43.75 amps for the sauna. Am I OK adding the one 15 amp circuit for general lighting.
Thanks in advance for any info on this setup.

And you could probably install another 15A circuit if needed since this is a 240V panel a single pole circuit is only loading one leg. You can load the other leg with 15A too. I don't know what value you use in a load calc for exterior lighting and general use receptacles. Would think it is zero because all the others are covered by square footage (3VA/sq ft rule) but there is no finished space on the outside. Technically, the lighting could be nameplate in the calc, but with LED lights that won't even be 1 amp.