Hi
We are doing a project in which the owner now wants to use indoor 12volt AC lighting such as recessed and some types of low profile luminaries in conjunction with his other line voltage lighting system. The lighting system will require remote transformers and separate wiring to the luminaries. We do not typically do such an extensive system like this and were not able to find a sub who wanted to or could, due to the location of the project. I am wondering are there any guides that can be downloaded or purchased online as a reference in conjunction to the NEC?
Some of the questions we have are do the 600 and 900 watt transformers need secondary protection since the primary to secondary ratio and % primary fusing are as such. The 600w transformers are 120-12volt and although rated at 600w are only listed to have a connected secondary load of 25amps. Also does all the secondary wiring have to be in conduit or can it be typical NM. Yet we were wondering is it the standard practice to switch the transformers on and off allowing the use of line voltage switches which could be ganged in the same switch boxes as the other line voltage luminaries in the dwelling or would the inrush current potentially trip the circuit breaker when the lights were turned on and off since every transformer would not be on its own circuit. We will be using the fiberglass nail on boxes with the barriers in them for the smaller gangs but couldn?t locate barriers for ganged jem boxes. Thank you for your suggestions.
We are doing a project in which the owner now wants to use indoor 12volt AC lighting such as recessed and some types of low profile luminaries in conjunction with his other line voltage lighting system. The lighting system will require remote transformers and separate wiring to the luminaries. We do not typically do such an extensive system like this and were not able to find a sub who wanted to or could, due to the location of the project. I am wondering are there any guides that can be downloaded or purchased online as a reference in conjunction to the NEC?
Some of the questions we have are do the 600 and 900 watt transformers need secondary protection since the primary to secondary ratio and % primary fusing are as such. The 600w transformers are 120-12volt and although rated at 600w are only listed to have a connected secondary load of 25amps. Also does all the secondary wiring have to be in conduit or can it be typical NM. Yet we were wondering is it the standard practice to switch the transformers on and off allowing the use of line voltage switches which could be ganged in the same switch boxes as the other line voltage luminaries in the dwelling or would the inrush current potentially trip the circuit breaker when the lights were turned on and off since every transformer would not be on its own circuit. We will be using the fiberglass nail on boxes with the barriers in them for the smaller gangs but couldn?t locate barriers for ganged jem boxes. Thank you for your suggestions.
