How to run 120 volt incandescent from 277 volt circuit?






*Threads Merged*

You can't.

Quote:

---

Originally Posted by stanfortyman

You can't.

---

OP may have asked the wrong question?

What is the panel voltage? Is it 120/277 or 277/480? Can you pull new wire? Or is the entire circuit one that can be changed to 120V operation?

Let me rephrase my question. The house panel is 277/480 and the lighting circuit is 277 v. I want to add some 120 chandeliers. I'm hearing that you can purchase 120/277 magnetic transformers for this situation but they only go to 300 VA, is this possible?

Here's a 5KVA , 277V primary/120V secondary general purpose transformer

http://www.acmepowerdist.com/datashe...-2-79744-S.pdf

Selected from this page (group VII)

Acme Electric

Have an electrician install it for you.

I'm asking about a lighting transformer. The type that you install on a 4 square j box. I can only find 300 volt amp for $60

Quote:

---

Originally Posted by dispatch43130

I'm asking about a lighting transformer. The type that you install on a 4 square j box. I can only find 300 volt amp for $60

---

You said "chandeliers" without specifying the load and asked for more. Chandeliers can be huge...

http://www.lightinguniverse.com/chan...ductItemsImage

Quote:

---

The house panel is 277/480 and the lighting circuit is 277 v.

---

This is obviously a commercial setting so your only option is to call an electrician.

Any place that has a 277/480V service must also have an on site transformer with 120/240v or 120/208v panels. This is to get you standard 120v receptacles.

Quote:

---

Originally Posted by stanfortyman

This is obviously a commercial setting so your only option is to call an electrician.

Any place that has a 277/480V service must also have an on site transformer with 120/240v or 120/208v panels. This is to get you standard 120v receptacles.

---

There is 120/208 panels also but they are maxed out. Can I get lighting transformers for less than $60 or higher than 300 VA?

Quote:

---

Can I get lighting transformers for less than $60 or higher than 300 VA?

---

HaHaHa... Not likely.

Call an electrician and see what your options are.

Quote:

---

Originally Posted by dispatch43130

There is 120/208 panels also but they are maxed out. Can I get lighting transformers for less than $60 or higher than 300 VA?

---

What brand panels and type of breakers? I'm guessing bolt on breakers, tell me the letter designation

For example Siemens BL or Square D BOQ or CutlerHammer BL, It will be a paper tag on each breaker you have to remove the deadfront to read the teeny tiny print.

Adding small transformers for lighting, unless it is only one fixture, is a bandaid approach. How many 120 volt fixtures are you planning to add?