remote light switching and power calcs

[02chuck]

Platonic Solid gave me the preferred design for my lighting, My lights are 135w Hi Bay Led fixtures. I figure that I can put 8 light fixtures on each circuit
(135w/120v=1.125a X 8 lights = 9amps, on a 20a breaker)
I also want to not use a wall switch, so I am planing use some Z wave switches controlled by my phone. We use a Samsung Z wave controller with Z wave switches to control out side lights for the house. The shop is 150' away from house so I am figuring I will need to have another controller in the shop

Question 1: Are my power calculations correct?
Question 2: What are folks experience with wireless lighting control.

Thanks
Chuck

 

[u2slow]

Platonic Solid gave me the preferred design for my lighting, My lights are 135w Hi Bay Led fixtures. I figure that I can put 8 light fixtures on each circuit
(135w/120v=1.125a X 8 lights = 9amps, on a 20a breaker)

Question 1: Are my power calculations correct?

Calc is correct.

No idea on the wireless switches... check if they are rated for 20A.

I prefer 15A circuits for lighting - usually 2 circuits on a MWBC. #14 is easier to splice. Lighting is also how I recycle my 15A breakers because I normally put in 20's for receptacles.

 

[02chuck]

u2slow
thanks for the calcs check. What is a MWBC? Can I call 4 lights one circuit? What is the equivalent of a circuit? I am lighting the bays (20x25) in the shop (4 lights to a bay) each bay will have a separate switch.
Thanks
Chuck

 

[u2slow]

u2slow
thanks for the calcs check. What is a MWBC? Can I call 4 lights one circuit? What is the equivalent of a circuit? I am lighting the bays (20x25) in the shop (4 lights to a bay) each bay will have a separate switch.
Thanks
Chuck

MWBC = multi wire branch circuit. Thats where you use a cable with red, black & white conductors. The red and black can each be a 120V circuit with a shared neutral. This is a standard/classic way of running circuits while saving wire - and makes for better load balancing. Modern Codes have put some restrictions on them.

A single branch circuit is everthing that's turned off by a single breaker. Sounds like all your lighting will fit on one circuit though. I can't predict if you will add more lights later.