Line V. Relay W/ Low V. Coil

Rugger

I need to find a reasonably priced relay to switch 240v load. (EWH) Control Voltage is 12 or 24 VDC. Need a relay that has a partition or enclosure to isolate hi & lo voltages. Without costing a fortune. Is anyone familiar with a relay similar to door bell XFMR's, where the low voltage connection is on the exterior of the box and the line voltage connection is inside the box? Maybe my next invention?

mdshunk

A barrier is not required when both high and low voltage serves the same device, such as the contactor in this case. For an EWH, one of these babies ought to do the trick, for 15 dollars:



http://www.grainger.com/Grainger/items/5YZ74

And, the enclosure to put it in, for 7 dollars:


http://www.grainger.com/Grainger/items/4A079

jbwhite

1/4 inch seperation is required between the line and low volt wires. If the low volt is a class two or three source.

mdshunk

Where you you read that?

jbwhite

725.55 (d)

Rugger

Thanks for the replies. I thought it was a new requirement to isolate low v from high. But I have been unable to find it. Problem solved.

Magnettica

Learn something new everyday!

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CE1

My personal favorite.
http://www.grainger.com/Grainger/items/5LE35

Attachment 5335

jbwhite

Those relays have thier place. 715.52 (A) Exception No. 2

CE1

725.52 (A) Exception No. 2

jbwhite

oops sorry for the mistype...

What is your point CE1, or do you not know either?

CE1

Nope not a clue. Just by deductive reasoning I noticed your numbers were "off". I treat the codebook as a minimun guide and not as absolute.

Carry On!

747

Your my hero

Ps. Maybe not i missed the post above is the code correct or not?

jbwhite

725 is the correct article. but no applause, just send money..

jbwhite

CE1

I apologize. I just re-read my post and it sounds offensive. I meant it to be funny. I will be more carefull in the future.

CE1

No problem.


Here is your money. Attachment 5353

Carry On!

jbwhite

Hey, My bank won't take confederate states of america money...

CE1

Try this then, Never leave home without them!!

Attachment 5358

sparkysteve

You guys ever use these? RIB "relay in a box"





I used to work for a control contractor. We used these to operate stuff like exaust fans, electric dampers, motors, lighting, etc off digital low voltage control panels. They mount to a box on a 1/2" K.O. The low voltage stays seperate from the line voltage. Available in every configuration you can think of.

They are from http://www.functionaldevices.com/

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Steve

Master Electrician/Self-Proclaimed Handy-Man