Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Main Forums
Do-It-Yourself (DIY) Question & Answer Forum
Difference between "Single pole with switched neutral" AND "Double Pole" ?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Talk Electrician Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Marvo" data-source="post: 561565" data-attributes="member: 20838"><p>Agree with Running Piglet. I'm not sure if things have changed but it used to be that an SP+N breaker will break last and make first the neutral and has no overload protection on the neutral pole. A 2-pole breaker obviously both poles feature mag and thermal overload and no particular order to the making and breaking of the poles. I only know for a fact in the old Heinemann MCB's the SP+N version had equally sized contacts on both poles but it wouldn't surprise me if modern versions had a smaller neutral contact in the interest of saving a tenth of a gram of brass.</p></blockquote><p></p>
[QUOTE="Marvo, post: 561565, member: 20838"] Agree with Running Piglet. I'm not sure if things have changed but it used to be that an SP+N breaker will break last and make first the neutral and has no overload protection on the neutral pole. A 2-pole breaker obviously both poles feature mag and thermal overload and no particular order to the making and breaking of the poles. I only know for a fact in the old Heinemann MCB's the SP+N version had equally sized contacts on both poles but it wouldn't surprise me if modern versions had a smaller neutral contact in the interest of saving a tenth of a gram of brass. [/QUOTE]
Insert quotes…
Verification
Post reply
Main Forums
Do-It-Yourself (DIY) Question & Answer Forum
Difference between "Single pole with switched neutral" AND "Double Pole" ?
Top