stevephillips
Member
- Location
- knoxville tn
Got an email from my boss about a job on Monday. The details ive got are what hes scoped out beforehand. Im going out on a job to install a UPS at a home. The HO wants a new outlet in each bedroom and his office, then have those along with the hall lights and smoke detectors all powered from a hard wired UPS. The UPS he is using is rated for 5kva/30A @120v. It has 5L-30 plug for both input and output. Ive not done one like this before (usually use a hard wire kit on bigger units with manufactured power distros) House is 3br 2bth, 2k sq ft.
So, these are my thoughts so far:
Install a sub panel like this:
http://i.imgur.com/Mxx5r.jpg
Install a 30A single pole breaker that is back fed. Question 1: Is it legal to connect both the bus bars together to use 5 spaces for loads and one for a back fed main?
Each bedroom gets a new 5-15 receptacle (I plan on using use new red ones left over from a previous job). Question 2: Not that I am wanting to do this, but would it be ok to put all the bedroom receptacles on the same breaker?
Move the circuit for the hall lights and smoke detectors to the UPS panel. (they are already on the same circuit)
The office gets a new receptacle as well and its on a 15A breaker.
Install a new 30A branch circuit in the main panel and the receptacle for the UPS.
On the sub panel, have it fed from a 5L-30 plug on 10/3 SO cord that would plug into the UPS.
Both the UPS in and out connectors are 5L-30.
Were not talking large loads for this. The HO wants to have his alarm clocks, computer, sleep apnea machine and desk lamps powered. Currently its all on drop cords strung all over the place.
Just to make it clear, the above plan would not have the plug feeding the sub panel be hot in any way. This is not one of those situations where a HO puts in a back fed breaker connected to a generator and simply turns off the main.
Is this the way to do it using the existing UPS? The UPS does not have a hardwire kit available for it but the manufacturer says it is ok to wire it the way I have described (plugging a SO cord into it and wiring that to a subpanel.
So, these are my thoughts so far:
Install a sub panel like this:
http://i.imgur.com/Mxx5r.jpg
Install a 30A single pole breaker that is back fed. Question 1: Is it legal to connect both the bus bars together to use 5 spaces for loads and one for a back fed main?
Each bedroom gets a new 5-15 receptacle (I plan on using use new red ones left over from a previous job). Question 2: Not that I am wanting to do this, but would it be ok to put all the bedroom receptacles on the same breaker?
Move the circuit for the hall lights and smoke detectors to the UPS panel. (they are already on the same circuit)
The office gets a new receptacle as well and its on a 15A breaker.
Install a new 30A branch circuit in the main panel and the receptacle for the UPS.
On the sub panel, have it fed from a 5L-30 plug on 10/3 SO cord that would plug into the UPS.
Both the UPS in and out connectors are 5L-30.
Were not talking large loads for this. The HO wants to have his alarm clocks, computer, sleep apnea machine and desk lamps powered. Currently its all on drop cords strung all over the place.
Just to make it clear, the above plan would not have the plug feeding the sub panel be hot in any way. This is not one of those situations where a HO puts in a back fed breaker connected to a generator and simply turns off the main.
Is this the way to do it using the existing UPS? The UPS does not have a hardwire kit available for it but the manufacturer says it is ok to wire it the way I have described (plugging a SO cord into it and wiring that to a subpanel.
